Mycoplasma bovis infections
Don't need the entire report?
Generate a print friendly version containing only the sections you need.Generate report
PicturesTop of page
IdentityTop of page
Preferred Scientific Name
- Mycoplasma bovis infections
International Common Names
- English: bovine mycoplasma conjunctivitis; bovine mycoplasmal arthritis; bovine mycoplasmal conjunctivitis; bovine mycoplasmal polyarthritis; calf pneumonia; endemic pneumonia in calves; enzootic calf pneumonia; infectious bovine keratoconjunctivitis, moraxella bovis, pinkeye; keratoconjunctivitis; mastitis; mycoplasma abortion in cattle; Mycoplasma bovis arthritis; Mycoplasma bovis infertility; Mycoplasma bovis keratoconjunctivitis; Mycoplasma bovis pneumonia; mycoplasma bovis pneumonia, arthritis, tenosynovitis, in calves and cows; Mycoplasma bovis reproductive disease; Mycoplasma bovis tenosynovitis; mycoplasmal abortion in cattle; mycoplasmal mastitis in cattle; otitis media, externa, interna, middle and inner ear infections; pink eye; pinkeye
Pathogen/sTop of page Mycoplasma bovis
OverviewTop of page
Arguably the most important mycoplasma of animals because of the range of diseases and economic losses it causes, M. bovis was first isolated in 1961 from a case of severe mastitis in cattle in the USA. It then appears to have spread via animal movements to many countries, Israel (1964), Spain (1967), Australia (1970), France (1974), Britain (1975), Czechoslovakia (1975), Germany (1977), Denmark (1981), Switzerland (1983), Morocco (1988), South Korea (1989), Brazil (1989), Northern Ireland (1993), Republic of Ireland (1994), Chile (2000), South Africa (2005), the Czech Republic (2007) and China (2008) (Nicholas, 2011). Most European countries are thought to be affected and M. bovis has been reported in Africa and Asia.
Its prevalence is almost certainly under reported, as Pasteurella (Mannheimia), and Haemophilus (Histophilus) species are invariably isolated from calf pneumonia and are easier to detect. In arthritis and mastitis where M. bovis is a primary and uncomplicated cause, it is often overlooked as few laboratories routinely monitor for mycoplasmas. However, unlike these 'conventional' bacteria, the occurrence of M. bovis in a herd is always linked to cases of disease, in particular mastitis, arthritis and/or pneumonia (Pfützner and Sachse, 1996). M. bovis has also been linked to endometritis, salpingitis, oophoritis, abortion and seminovesiculitis which have all been reproduced experimentally (Ruhnke, 1994). Otitis media and meningitis resulting in neurological signs and permanent head tilt has also been reported (Gosselin et al., 2012) and reproduced experimentally (Maunsell et al., 2012). An unusual case of toxic epidermal necrolysis was associated with M. bovis in calves (Senturk et al., 2012).
While M. bovis infections have always been difficult to treat, there is now considerable evidence that many strains are resistant to chemotherapy (Ayling et al., 2000; Gerchman et al., 2009).
The genome of M. bovis type strain is 1,003,404 base pairs and has a G+C content of 29.3% (Wise et al., 2011); whereas the Hubei-1 isolate was slightly smaller at 953,114 base pairs (Li et al., 2011).
Host AnimalsTop of page
Hosts/Species AffectedTop of page
M. bovis is highly adapted to cattle but occasional isolations are made in buffaloes and small ruminants. Pneumonia and mastitis have been experimentally reproduced in sheep (Pfützner and Sachse, 1996). Very rare isolations have been made from chickens (Ongor et al., 2008); and man in immunocompromised patients (Pitcher and Nicholas, 2005).
Systems AffectedTop of page mammary gland diseases of large ruminants
multisystemic diseases of large ruminants
reproductive diseases of large ruminants
respiratory diseases of large ruminants
DistributionTop of page
M. bovis is an important cause of respiratory disease and mastitis in cattle throughout the world, often reported as emerging (Gille et al., 2018).
Distribution TableTop of page
The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.Last updated: 10 Jan 2020
|Continent/Country/Region||Distribution||Last Reported||Origin||First Reported||Invasive||Reference||Notes|
|Egypt||Present, Widespread||El-Shabiny and El-Makarem (1994)|
|Morocco||Present||Taoudi et al. (1985)|
|Nigeria||Present||Egwu et al. (1999)|
|China||Present||Kong LingCong et al. (2016)|
|India||Present, Widespread||Garg et al. (1999)|
|Iran||Present||Dabiri et al. (2017)|
|Israel||Present||Lysnyansky et al. (2017)|
|Jordan||Present||Hananeh et al. (2018)|
|South Korea||Present||Kim et al. (1989)|
|Turkey||Present||CABI (Undated)||Original citation: özdemir and Türkarslan (1998)|
|Vietnam||Present||Dung Van Nguyen and Chau Kim Thi Truong (2015)|
|Austria||Present||Pothmann et al. (2015)|
|Belgium||Present||Thomas et al. (1999)|
|Croatia||Present||Naglić et al. (1996)|
|Czechoslovakia||Present||Jurmanova et al. (1975)|
|Federal Republic of Yugoslavia||Present||Nicolet (1994); Nicolet (1994a)|
|Denmark||Present, Widespread||Friis and Krogh (1983)|
|Finland||Present||Nicolet (1994); Nicolet (1994a)|
|France||Present, Widespread||Nicholas (1997)|
|Germany||Present, Widespread||Baumgärtner (1999)|
|Greece||Present||CABI (Undated)||Original citation: Filiousis and Papanikolaou (1999)|
|Hungary||Present, Widespread||Horvath et al. (1981)|
|Ireland||Present, Widespread||Doherty et al. (1994)|
|Italy||Present, Widespread||Thomas et al. (1975)|
|Netherlands||Present, Widespread||Laak et al. (1992);|
|Poland||Present||Kondracki et al. (1992)|
|Portugal||Present, Widespread||Machado et al. (1987)|
|Slovakia||Present||Nicolet (1994); Nicolet (1994a)|
|Sweden||Present||Nicolet (1994); Nicolet (1994a)|
|Switzerland||Present, Widespread||Nicolet (1994); Nicolet (1994a)|
|United Kingdom||Present, Widespread||Thomas et al. (1975)|
|Canada||Present||Thomas et al. (1975); Rosengarten and Citti (1999)|
|-Quebec||Present||Bois et al. (1993)|
|-Saskatchewan||Present||Donkersgoed et al. (1993)|
|Mexico||Present||Hernández Andrade and Jaramillo Meza (1995)|
|United States||Present||Rosengarten and Citti (1999)|
|-California||Present||Uhaa et al. (1990)|
|-Iowa||Present, Widespread||Rosengarten and Citti (1999)|
|-New York||Present, Widespread||Rosengarten and Citti (1999)|
|Australia||Present||Nicolet (1994); Nicolet (1994a)|
|Argentina||Present||Margineda et al. (2017)|
|Brazil||Present||Mettifogo et al. (1996)|
PathologyTop of page
Pulmonary lesions in naturally infected calves comprise exudative bronchopneumonia and extensive foci of coagulative necrosis surrounded by inflammatory cells. In studies involving experimental infections of gnotobiotic calves with M. bovis, significant pneumonia was induced involving up to 30% of the lung surface and was of sufficient severity to cause clinical respiratory disease in some calves (Thomas et al., 1986). Distinctive areas of coagulative necrosis were prominent within the lesions. More chronic infections are often associated with a chronic lymphocytic ‘cuffing’ pneumonia where there is marked hyperplasia of peribronchial lymphoid tissue causing stenosis of airway lumina and compression and collapse of adjacent pulmonary pyrenchyma. M. bovis antigen is mainly detected at the periphery of the areas of coagulative necrosis, in necrotic exudates and in close association with infiltrating macrophages and neutrophils (Rodríguez et al., 1996). More recently chronic caseonecrotic bronchopneumonia with multiple dry and crumbly foci of caseous necrosis, which resembles bovine tuberculosis, has been recognised in the USA and Europe (Nicholas, 2011).
In severe cases of mastitis, one or more quarters are tense and swollen but neither hot nor painful and on section consists of yellow greenish tissue with a purulent exudate replacing milk secretion. Affected animals usually show no signs of illness although mild respiratory symptoms and slight malaise may be seen; this absence of systemic disease is also an indication of mycoplasma mastitis.
M. bovis-induced arthritis usually affects the dithrodal joints which are grossly swollen and hot to the touch. At necropsy, the synovial capsule is turbid and thickened and a viscous opaque synovial fluid is present in excessive amounts. This is associated with distension of the tendon sheaths. Large fibrin deposits on the membranes and within the joints, sometimes forming large pads, are also seen (Stipkovits et al., 2001).
It has been reported that Mycoplasma species including M. bovis have the ability to form biofilms (McAuliffe et al., 2006). Whether the formation of biofilms has a role in the pathology of the disease is not known, however it is likely to provide the organism with some protection against the hosts immune response and antibiotic treatments, it will also facilitate longer survival in the environment than previously thought.
DiagnosisTop of page
Clinical signs are not characteristic for M. bovis so laboratory diagnosis is necessary for identification. Samples of choice are listed in the table below. The mycoplasma grows well in a variety of media producing 'centred' colonies within 3-5 days (Nicholas and Baker, 1998). In an appropriate medium (such as Eaton’s) M. bovis produces films and spots and gives an orange colour to the broth. Other biochemical characteristics are shown in a table under the 'Pathogen Characteristics' of M. bovis. Growth inhibition, film inhibition, fluorescent antibody or metabolic inhibition tests can be used to identify the mycoplasma using hyperimmune rabbit serum.
Samples of choice for diseases caused by M. bovis
Nasal swabs/ BAL*/ affected lung
Semen/genital discharge/preputial washings
Serum for antibody detection
*bronchial alveolar lavage
A rapid and sensitive sandwich ELISA for M. bovis was described by Ball and Findlay (1998). Immunobinding assays were described for M. bovis which had similar sensitivities and specificities to the culture method but were simpler and more rapid (Poumarat et al., 1999). M. bovis can be easily outgrown by opportunistic mycoplasmas such as M. bovirhinis and acholeplasmas; occasionally, antigenic variability of strains may make serological tests unreliable (Ayling et al., 1997). For these situations, polymerase chain reaction (PCR) tests are very convenient. Early PCRs, based on 16S rRNA genes, also amplified M. agalactiae DNA (Pfützner and Sachse, 1996; Ayling et al., 1997) but PCR developed based on the uvrC gene are more specific (Frey et al., 1999). PCRs have been used to detect M. bovis directly in milk and nasal samples (Hotzel et al., 1996). R-T PCR’s provide a quick and sensitive specific diagnostic test (Sachse et al., 2010), but other tests that can detect multiple mycoplasma infections can be advantageous and these include the PCR/DGGE method (McAuliffe et al., 2005) and microarray technology (Schnee et al., 2012).
Serological detection of M. bovis antibody is often a more reliable diagnostic method as antibody levels detected by ELISA remain high for many months. This is particularly true where antibiotics have been used extensively on the herd, which severely hampers isolation; M. bovis is also difficult to isolate from chronically affected cattle (Nicholas, 1997). The presence of specific antibodies would also indicate that the infection is invasive. While a number of serological tests including indirect haemagglutination and film inhibition have been reported, these have been mostly superseded by the indirect ELISA using whole cell or chemically treated antigens (Nicholas et al., 2000); a commercial test is also available from BioX (Belgium). An ELISA method has been used successfully to select M. bovis-free cattle following depopulation as a result of BSE in Ireland (O’Farrell et al., 2001); its use in maintaining M. bovis-free herds by testing newly bought-in animals before introduction to the herd should also be seriously considered.
The isolation of M. bovis from lungs is not always possible because of ongoing antibiotic treatment, poor lung condition or gross bacterial contamination. In these cases, immunohistochemical techniques preferably using monoclonal antibodies may be valuable to localise mycoplasma antigens in the affected tissue (Adegboye et al., 1995).
List of Symptoms/SignsTop of page
|Acoustic Signs / Deafness||Sign|
|Acoustic Signs / Purulent, mucoid discharge, excess wax, foul odour, ears||Sign|
|Acoustic Signs / Rubbing ears, scratching||Sign|
|Cardiovascular Signs / Tachycardia, rapid pulse, high heart rate||Sign|
|Digestive Signs / Anorexia, loss or decreased appetite, not nursing, off feed||Cattle & Buffaloes:Calf||Sign|
|Digestive Signs / Diarrhoea||Sign|
|Digestive Signs / Difficulty in prehending or chewing food||Sign|
|Digestive Signs / Dysphagia, difficulty swallowing||Sign|
|Digestive Signs / Vomiting or regurgitation, emesis||Sign|
|General Signs / Ataxia, incoordination, staggering, falling||Sign|
|General Signs / Dysmetria, hypermetria, hypometria||Sign|
|General Signs / Fever, pyrexia, hyperthermia||Cattle & Buffaloes:Calf||Sign|
|General Signs / Forelimb lameness, stiffness, limping fore leg||Sign|
|General Signs / Forelimb swelling, mass in fore leg joint and / or non-joint area||Sign|
|General Signs / Generalized lameness or stiffness, limping||Cattle & Buffaloes:Calf||Sign|
|General Signs / Haemorrhage of any body part or clotting failure, bleeding||Sign|
|General Signs / Head, face, ears, jaw weakness, droop, paresis, paralysis||Sign|
|General Signs / Hindlimb lameness, stiffness, limping hind leg||Sign|
|General Signs / Hindlimb swelling, mass in hind leg joint and / or non-joint area||Sign|
|General Signs / Inability to stand, downer, prostration||Cattle & Buffaloes:Calf||Sign|
|General Signs / Lack of growth or weight gain, retarded, stunted growth||Cattle & Buffaloes:Calf||Sign|
|General Signs / Mammary gland swelling, mass, hypertrophy udder, gynecomastia||Cattle & Buffaloes:Cow||Sign|
|General Signs / Opisthotonus||Sign|
|General Signs / Orbital, periorbital, periocular, conjunctival swelling, eyeball mass||Sign|
|General Signs / Reluctant to move, refusal to move||Cattle & Buffaloes:Calf||Sign|
|General Signs / Sudden death, found dead||Cattle & Buffaloes:Cow||Sign|
|General Signs / Torticollis, twisted neck||Sign|
|General Signs / Underweight, poor condition, thin, emaciated, unthriftiness, ill thrift||Sign|
|General Signs / Weight loss||Cattle & Buffaloes:Calf||Sign|
|Musculoskeletal Signs / Decreased mobility of forelimb joint, arthrogryposis front leg||Cattle & Buffaloes:Calf||Sign|
|Musculoskeletal Signs / Decreased mobility of hindlimb joint, arthrogryposis rear leg||Cattle & Buffaloes:Calf||Sign|
|Nervous Signs / Circling||Sign|
|Nervous Signs / Dullness, depression, lethargy, depressed, lethargic, listless||Cattle & Buffaloes:Calf||Sign|
|Nervous Signs / Head shaking, headshaking||Sign|
|Nervous Signs / Head tilt||Sign|
|Nervous Signs / Tremor||Sign|
|Ophthalmology Signs / Anisocoria||Sign|
|Ophthalmology Signs / Blepharospasm||Sign|
|Ophthalmology Signs / Blindness||Cattle & Buffaloes:All Stages||Sign|
|Ophthalmology Signs / Buphthalmia, enlarged globe eye, glaucoma||Sign|
|Ophthalmology Signs / Chemosis, conjunctival, scleral edema, swelling||Sign|
|Ophthalmology Signs / Conjunctival, scleral, injection, abnormal vasculature||Sign|
|Ophthalmology Signs / Conjunctival, scleral, redness||Sign|
|Ophthalmology Signs / Corneal edema, opacity||Cattle & Buffaloes:All Stages||Sign|
|Ophthalmology Signs / Corneal neovascularization, pannus||Sign|
|Ophthalmology Signs / Corneal swelling, mass, nodule||Sign|
|Ophthalmology Signs / Corneal ulcer, erosion||Cattle & Buffaloes:All Stages||Sign|
|Ophthalmology Signs / Decreased or absent menace response but not blind||Sign|
|Ophthalmology Signs / Decreased tearing, lacrimation||Sign|
|Ophthalmology Signs / Hyphema, blood anterior chamber of eye, "black eye"||Sign|
|Ophthalmology Signs / Hypopyon, lipid, or fibrin, flare, of anterior chamber||Sign|
|Ophthalmology Signs / Lacrimation, tearing, serous ocular discharge, watery eyes||Sign|
|Ophthalmology Signs / Miosis, meiosis, constricted pupil||Sign|
|Ophthalmology Signs / Nystagmus||Sign|
|Ophthalmology Signs / Photophobia||Sign|
|Ophthalmology Signs / Ptosis, lid droop||Sign|
|Ophthalmology Signs / Purulent discharge from eye||Sign|
|Ophthalmology Signs / Strabismus||Sign|
|Ophthalmology Signs / Synechia||Sign|
|Pain / Discomfort Signs / Ocular pain, eye||Sign|
|Pain / Discomfort Signs / Pain mammary gland, udder||Cattle & Buffaloes:Cow||Sign|
|Pain / Discomfort Signs / Pain, head, face, jaw, ears||Sign|
|Pain / Discomfort Signs / Pain, prepuce||Cattle & Buffaloes:Bull||Sign|
|Reproductive Signs / Abortion or weak newborns, stillbirth||Sign|
|Reproductive Signs / Agalactia, decreased, absent milk production||Cattle & Buffaloes:Cow||Sign|
|Reproductive Signs / Female infertility, repeat breeder||Cattle & Buffaloes:Cow||Sign|
|Reproductive Signs / Mastitis, abnormal milk||Cattle & Buffaloes:Cow||Sign|
|Respiratory Signs / Abnormal lung or pleural sounds, rales, crackles, wheezes, friction rubs||Sign|
|Respiratory Signs / Coughing, coughs||Cattle & Buffaloes:Calf||Sign|
|Respiratory Signs / Dyspnea, difficult, open mouth breathing, grunt, gasping||Cattle & Buffaloes:Calf||Sign|
|Respiratory Signs / Increased respiratory rate, polypnea, tachypnea, hyperpnea||Sign|
|Respiratory Signs / Mucoid nasal discharge, serous, watery||Cattle & Buffaloes:Calf||Sign|
|Respiratory Signs / Purulent nasal discharge||Sign|
Disease CourseTop of page
A clinical study of endemic pneumonia caused predominantly by M. bovis showed that nearly half of dairy calves were shedding mycoplasma at 5 days of age and by 4 weeks this reached over 90% (Stipkovits et al., 2000). Clinical disease in calves, including up to 10% mortality as a result of severe serofibrinous pneumonia, is maximal at 10-15 days. Surviving calves show very poor weight gain and remain retarded; other signs included fever, depression, hyperpnoea, dysnpnoea, nasal discharge, mild to continuous coughing and loss of appetite. While Pasteurella multocida is often isolated, the rate does not always increase over time. In the UK, calf pneumonia usually begins in November and peaks around January before declining, but deaths continue to occur in some herds in the spring at pasture representing relapses because of unresolved lung lesions (Nicholas et al., 2001a).
In M. bovis-induced mastitis, clinical signs vary from subclinical to very severe and from acute to chronic. Usually with overt disease, there is a sharp reduction in milk production, swelling and firmness of the mammary glands; the condition is usually refractory to antibiotics (Ross, 1993). In an infected herd, mastitis usually affects more than 20% of cows independently of the stage of lactation with even dry cows developing the disease. The main symptoms include a great alteration in milk consistency (watery to purulent), a rapid decrease of milk yields down to a few millilitres within 3-5 days, and quick spread of the infection from one udder quarter to the others leading to agalactia. The overall number of cells in the milk increases dramatically and after a further few weeks the affected quarters become atrophic. M. bovis mastitis is characterised by the failure of cows to recover from the disease during the continuing lactation period and from the often complete lack of response to antibiotic treatment. On recovery, milk production rarely resumes normal output.
Arthritis associated with M. bovis infection may be a sequel to either the respiratory or mastitic form of the disease (Pfützner, 1990). There is lameness, swelling of joints, slight elevation of temperature, failure of antibiotic treatment, and if severe, reduced consumption of feed and debilitation. This condition often arises within 2-3 weeks of housing and also following transportation of calves over long distances. The initial signs are reluctance to stand and a stiff gait. Many cases are mild and the animal usually recovers; in more severe cases, lameness becomes more pronounced within 1-4 days and the animal is reluctant to stand. The affected limb is either stiff or held stiffly at the affected joint. If the animal is walking, the limb may be dragged or thrown outwards to minimise articular action.
Genital disease caused by M. bovis is indistinguishable from common fertility disorders and is normally found in only a small number of individuals (Pfützner and Sachse, 1996).
EpidemiologyTop of page
M. bovis is not ubiquitous, but is widespread within the bovine population of enzootically infected areas. Infected, but clinically healthy calves and young cattle, shed the mycoplasma via the respiratory tract, thereby acting as the reservoir of infection (Pfützner, 1990). The appearance of M. bovis on some farms has been associated with increased severity of respiratory disease and increased mortality (Nicholas, 1997).
The infection is usually brought in to M. bovis-free herds by clinically healthy calves or young cattle shedding the mycoplasma and once established in a multi-age site is very difficult to eradicate. Cattle get infected via the teat canal, the respiratory tract and genital tract; artificial insemination with infected semen is another common route (Pfützner, 1990).
In a study of calves in the Netherlands, Laak et al. (1992a, 1992b) found M. bovis in 20% of pneumonic lungs from fattening herds but not in dairy herds and in only 3% of healthy calves. Following its introduction into Ireland in 1994, M. bovis has been consistently isolated from 13-23% of pneumonic lungs (Byrne et al., 2001). In Britain, about 20-25% of pneumonic herds contain antibodies to M. bovis (Nicholas et al., 2001). In France, serological screening for M. bovis in suckling beef cattle in seven counties revealed that over 80% of herds contained at least one infected animal although the number of seropositive cattle was generally low (15%) (Le Grand et al., 2001). The low ELISA titres obtained in the study suggested a less active infection process within the adult population. In Poland, Bednarek et al. (2012) found nearly 81% of 361 herds had positive M. bovis titres.
Impact: EconomicTop of page
M. bovis is an important pathogen of cattle causing disease with significant detrimental impacts on animal welfare and the farming economy (Nicholas and Ayling, 2003). The real economic cost of the disease has not been determined; a detailed analysis of all cost factors such as mortality, veterinary costs, treatment, milk loss, added housing/feed costs through lack of weight gain would yield a more complete appreciation of the full economic burden. There are no official restrictions on animal movement within the European Union; however, some countries importing cattle are increasingly aware of the risks of importing infected cattle and are requesting that cattle are tested and shown to be free of M. bovis (Calcutt et al., 2018).
In the UK, it is estimated that up to 1.9 million cattle are affected annually by respiratory disease, with a consequent loss in performance of £54 million to the cattle industry (Reeve-Johnson, 1999). Furthermore, approximately 157,000 calves die annually as a result of pneumonia and related illnesses, which would have a potential market value of £99 million. Across Europe with approximately 84.5 million cattle in 1995 this translated as total losses of 576 million ECU. It is likely that M. bovis is responsible for at least a quarter to a third of these losses, although this is certainly an underestimate as few countries report mycoplasma diseases (Nicholas et al., 2000). In the USA, losses caused by M. bovis as a result of loss of weight gain and carcass value have been estimated at $32 million per year (Rosengarten and Citti, 1999).
The losses due to bovine mastitis caused by M. bovis may be higher than that for respiratory disease. In the USA losses have been estimated at $108 million per year with infection rates of up to 70% of a herd (Rosengarten and Citti, 1999). A survey of bulk milk tank samples in New York State over 9 years reported that about 2.3% contained M. bovis; similar results have been reported in Iowa where culling rates of infected cows of 30-70% are not uncommon. In eastern Canada, 52% of dairy herds are affected with M. bovis mastitis resulting in culling rates of close to 33% and average milk production losses of 6.4 kg per cow each day (Rosengarten and Citti, 1999).
No data are available for losses due to M. bovis arthritis or reproductive disease.
Disease TreatmentTop of page
Pfützner (1990) stated that diseases due to M. bovis were resistant to any therapy. In spite of this, antibiotics are widely used to reduce secondary bacterial infections, but often they are ineffective for the treatment of the core mycoplasma infections. Many in vitro studies have compared the susceptibility of M. bovis to a range of antibiotics (see Table). While it is clear that antibiotics which are ineffective in vitro are unlikely to be effective in vivo, those with strong activities in vitro will not necessarily perform well in the field for reasons which are unclear (Ayling et al., 2000). Recent evidence suggests that M. bovis strains are becoming resistant to antibiotics traditionally used for treatment of mycoplasma infections; in particular oxytetracyclines, tilmicosin and spectinomycin (Nicholas et al., 2000). Some in vitro resistance to the fluoroquinolones has also been reported (Gerchman et al., 2009). Some of the new triamalides are licensed for use in treating mycoplasma respiratory disease in cattle, and are reported to be effective in the field, but in vitro test results are not always consistent with that finding (Godinho et al., 2005).
Some success against M. bovis pneumonia and arthritis in calves was reported by Stipkovits et al. (2001) using valnemulin added to the milk from 4 days of age for 3 weeks. Animals in the treated group had fewer clinical signs and reduced clinical scores though the number of animals with nasal discharge was similar. In spite of the continuous chemotherapy, animals required a considerable number of individual treatments.
Effectiveness of antibiotics against field strains of M. bovis (minimum inhibitory concentrations µg/ml*)
No of strains
(ter Laak et al., 1993)
N. Ireland (Ball et al., 1995)
0.06-0.5 (9 strains)
4->32 (14 strains)
1-8 (50 strains)
128->128 (12 strains)
Israel and imports
0.5 – 1024
0.5 – 128
0.5 – 128
0.5 – 16
<0.125 – 4
1 – 64
1 – 16
1 - 256
0.25 – 512
16 – 128
0.03 – 4
1 – >16
0.5 - >128
0.125 - >32
USA (Soehnlen et al., 2011)
2 - >256
=or<1 µg/ml = mycoplasmas susceptible
2-4 µg/ml = show intermediate susceptibility
>8 µg/ml = mycoplasmas resistant
(Laak et al., 1992a, 1992b)
Prevention and ControlTop of page
The inability of chemotherapy to control M. bovis infections has focused attention on vaccination. Surprisingly there are no currently available vaccines although a quadrivalent inactivated vaccine containing respiratory syncytial virus, parainfluenza type 3 and 2 mycoplasmas, M. dispar and M. bovis, showed some evidence of protection against natural infection of respiratory disease (Howard et al., 1987). A vaccine prepared with formalin-inactivated strains of M. bovis and Pasteurella haemolytica taken from the target herd reduced losses from pneumonia and cost of treatment in newly introduced feedlot calves (Urbaneck et al., 2000). More recently a saponised-inactivated vaccine was shown to be safe, highly immunogenic and protective against a strong experimental challenge of virulent M. bovis (Nicholas et al., 2001). However, attempts to vaccinate against M. bovis arthritis were less successful against experimental infection although high levels of antibody were detected before challenge (Poumarat et al., 1999). Experimental vaccines against mastitis have not been successful and indeed may make the condition worse (Ross, 1993).
Mastitis caused by M. bovis responds poorly to antibiotics therefore it is best to segregate or cull carrier cows then instigate rigid sanitation procedures to prevent transmission from infected to non-infected cows (Pfützner, 1990). Identification of infected cows in the early stages of mastitis may be detected conveniently using an indirect ELISA for specific antibody in the milk; moreover the test can identify the infected quarter of an individual cow (Byrne et al., 2000). Punyapornwithaya et al. (2012) stated that most mastitic herds cleared mastitis within 1 month, with more than 50% of the herds culling diseased cows; however culling was not associated with hastened clearance and may not be an essential control practice if other good milking time hygiene and practices are observed.
The prophylactic use of antibiotics is generally undesirable but its use may be justified when calves are introduced to a site with a history of M. bovis infection in which high levels of mortality have been sustained. Nagatomo et al. (1996) treated one group of introduced calves with leucomycin prior to the development of clinical signs. Untreated groups of calves showed mortality rates of 41% and 17% while all the calves in the treated group survived, although coughing and nasal discharges were evident. Interestingly, while M. bovis antibodies were detected in non-treated groups after two months following introduction, antibody development was significantly delayed until over eight months in the antibiotic-treated groups.This provides further evidence that antibody responses are rarely protective.
Control of calf pneumonia should include measures to reduce environmental stress and to ensure adequate housing with good circulation of air. Wherever possible consideration should be given to ‘all in, all out’ practices to prevent older animals infecting younger ones. If this is not possible, separation of calves from the adults is advisable at the earliest possible opportunity where endemic disease exists and where husbandry allows this.
ReferencesTop of page
Adegboye DS, Rasberry U, Halbur PG, Andrews JJ, Rosenbusch RF, 1995. Monoclonal antibody-based immunohistochemical technique for the detection of Mycoplasma bovis in formalin-fixed, paraffin-embedded calf lung tissues. Journal of Veterinary Diagnostic Investigation, 7(2):261-265; 15 ref
Askaa G, Erno H, 1976. Evaluation of Mycoplasma agalactiae subsp. bovis to species rank Mycoplasma bovis. International Journal of Systematic Bacteriology, 26:323-325
Ayling RD, Baker SE, Peek ML, Simon AJ, Nicholas RAJ, 2000. Comparison of in vitro activity of danofloxacin, florfenicol, oxytetracycline, spectinomycin and tilmicosin against recent field isolates of Mycoplasma bovis. Veterinary Record, 146(26):745-747; 16 ref
Ball HJ, Craig Reilly GA, Bryson DG, 1995. Antibiotic susceptibility of Mycoplasma bovis strains in Northern Ireland. Irish Veterinary Journal, 48:316-318
Ball HJ, Findaly D, 1998. Diagnostic applications of monoclonal antibody-based sandwich ELISAs. In: Miles RJ, Nicholas RAJ, eds. Mycoplasma Protocols. Totowa, USA: Humana Press, 127-132
Bednarek D, Ayling RD, Nicholas RAJ, Dudek K, Szymanska-Czerwinska M, 2012. Serological survey to determine the occurrence of respiratory Mycoplasma infections in the Polish cattle population. Veterinary Record, 171(2):45. http://veterinaryrecord.bvapublications.com/archive/
Byrne WJ, Ball HJ, Brice N, McCormack R, Baker SE, Ayling RD, Nicholas RAJ, 2000. Application of an indirect ELISA to milk samples to identify cows with Mycoplasma bovis mastitis. Veterinary Record, 146(13):368-369; 8 ref
Calcutt, M. J., Lysnyansky, I., Sachse, K., Fox, L. K., Nicholas, R. A. J., Ayling, R. D., 2018. Gap analysis of Mycoplasma bovis disease, diagnosis and control: an aid to identify future development requirements. Transboundary and Emerging Diseases, 65(s1), 91-109. https://onlinelibrary.wiley.com/doi/full/10.1111/tbed.12860
Dabiri, M., Mirshokraei, P., Rad, M., Khoramian, B., 2017. Detection of Mycoplasma bovis in bulk tank milk samples by nested PCR in Mashhad, Iran. Iranian Journal of Veterinary Science and Technology, 9(2), 28-32. https://ijvst.um.ac.ir/index.php/veterinary/article/download/57678/13464
Dung Van Nguyen, Chau Kim Thi Truong, 2015. Seroprevalence of Mycoplasma bovis infection in dairy cows in Ho Chi Minh, Vietnam. Open Journal of Veterinary Medicine, 5(5), 123-126. http://file.scirp.org/Html/3-2280224_56651.htm doi: 10.4236/ojvm.2015.55016
Eder-Rohm KH, 1996. Presence of mycoplasmas in ejaculates from bulls in Austria. Wiener Tierärztliche Monatsschrift, 83(7):221; [Abstraction of Dissertation, Veterinary Medical University, Vienna, Austria.]
Filiousis G, Papanikolaou E et al. , 1999. Isolation and characterisation of M. bovis from a calf pneumonia outbreak in Greece. In: Stipkovits L, Rosengarten R, Frey J, eds. Mycoplasmas of ruminants:pathogenicity, diagnostics, epidemiology and molecular genetics Vol 3. Brussels: European Commission, 101-103
Frey J, Subramaniam S, Bergonier D, Nicolet J, 1999. DNA repair genes uvrC as genetic targets for discrimination of closely related mycoplasmas. In: Stipkovits L, Rosengarten R, Frey J, eds. Mycoplasmas of ruminants: pathogenicity, diagnostics, epidemiology and molecular genetics. Vol 3. Brussels, Belgium: European Commission, 40-43
Friis NE, Krogh HV, 1983. Isolation of mycoplasmas from Danish cattle. Nordic Veterinary Medicine, 35:74-81
Garg DN, Kapoor PK, Singh Y, 1999. Detection of mycoplasmal antibodies in bovines with reproductive disorders. Indian Journal of Comparative Microbiology, Immunology and Infectious Diseases, 20(1):32-35; 12 ref
Gerchman I, Levisohn S, Mikula I, Lysnyansky I, 2009. In vitro antimicrobial susceptibility of Mycoplasma bovis isolated in Israel from local and imported cattle. Veterinary Microbiology, 137(3/4):268-275. http://www.sciencedirect.com/science/journal/03781135
Gille, L., Callens, J., Supré, K., Boyen, F., Haesebrouck, F., Driessche, L. van, Leenen, K. van, Deprez, P., Pardon, B., 2018. Use of a breeding bull and absence of a calving pen as risk factors for the presence of Mycoplasma bovis in dairy herds. Journal of Dairy Science, 101(9), 8284-8290. https://www.sciencedirect.com/science/article/pii/S0022030218306295 doi: 10.3168/jds.2018-14940
Godinho KS, Rae A, Windsor GD, Tilt N, Rowan TG, Sunderland SJ, 2005. Efficacy of tulathromycin in the treatment of bovine respiratory disease associated with induced Mycoplasma bovis infections in young dairy calves. Veterinary Therapeutics, 6(2):96-112
Gosselin VB, Francoz D, Babkine M, Desrochers A, Nichols S, Doré E, Bédard C, Parent J, Fairbrother JH, Fecteau G, 2012. A retrospective study of 29 cases of otitis media/interna in dairy calves. Canadian Veterinary Journal, 53(9):957-962. http://www.canadianveterinarians.net
Grand D le, Phillippe S, Calavalas D, Bezille P, Poumarat F, 2001. Prevalence of Mycoplasma bovis infection in France. In: Poveda JB, Fernandez A, Frey J, Johnansson K-E, eds. Mycoplasmas of ruminants: pathogenicity, diagnostics, epidemiology and molecular genetics. Vol 5. Brussels, Belgium: European Commission, 106-109
Hananeh, W. M., Al-Momani, W. M., Ababneh, M. M., Abutarbush, S. M., 2018. Mycoplasma bovis arthritis and pneumonia in calves in Jordan: an emerging disease. Veterinary World, 11(12), 1663-1668. http://www.veterinaryworld.org/Vol.11/December-2018/3.pdf doi: 10.14202/vetworld.2018.1663-1668
Herrmann R, 1992. Genome structure and organization. In: Maniloff J ed. Mycoplasmas: molecular biology and pathogenesis. Washington DC, USA: American Society of Microbiology, 157-168
Horvath G, Stipkovits L, Zoldag L, Varga Z, Meszaros J, 1981. Experimental mycoplasma mastitis in cattle. Acta Veterinaria Hungarica, 29:233-236
Howard CJ, Stott EJ, Thomas LH, Gourlay RN, Taylor G, 1987. Protection against respiratory disease in calves induced by vaccines containing respiratory syncytial virus, parainfluenza type 3 virus, Mycoplasma bovis and M. dispar.. Veterinary Record, 121(16):372-376; 20 ref
Jain NC, Jasper DE, Dellinger JD, 1967. Cultural characters and serology realtionship of some mycoplasmas isolated from bovine sources. Journal of General Microbiology, 49:401-410
Jurmanova K, Hajkova M, Krejci J, Jiranek E, 1975. Ucast mykoplazmat pri hromadnych onemocnenich skotu. Vyzkumna zprava, Brno, Vyzkumny ustav veterinarniho lekarstvi, 42s
Kong LingCong, Gao Duo, Jia BoYan, Wang Zi, Gao YunHang, Pei ZhiHua, Liu ShuMing, Xin JiuQing, Ma HongXia, 2016. Antimicrobial susceptibility and molecular characterization of macrolide resistance of Mycoplasma bovis isolates from multiple provinces in China. Journal of Veterinary Medical Science, 78(2), 293-296. http://www.jstage.jst.go.jp/browse/jvms/-char/en doi: 10.1292/jvms.15-0304
Laak EA ter, Noordergraaf JH, Boomsluiter E, 1992b. The nasal mycoplasmal flora of healthy calves and cows. Journal of Veterinary Medicine. Series B., 39(8):610-616
Laak EAter, Noordergraaf JH, Verschure MH, 1993. Susceptibilities of Mycoplasma bovis, Mycoplasma dispar and Ureaplasma diversum strains to antimicrobial agents in vitro. Antimicrobial Agents and Chemotherapy, 37(2):317-321
Leach RH, 1967. Comparative studies of mycoplasmas of bovine origin. Annals of the New York Academy of Sciences, 143:305-306
Li Yuan, Zheng HuaJun, Liu Yang, Jiang YanWei, Xin JiuQing, Chen Wei, Song ZhiQiang, 2011. The complete genome sequence of Mycoplasma bovis strain Hubei-1. PLoS ONE, No.June:e20999. http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0020999
Lysnyansky, I., Mikula, I., Ozeri, R., Bellaiche, M., Nicholas, R. A. J., Straten, M. van, 2017. Mycoplasma bovis seroprevalence in Israeli dairy herds, feedlots and imported cattle. Israel Journal of Veterinary Medicine, 72(1), 13-16. http://www.ijvm.org.il/sites/default/files/mycoplasma_bovis_seroprevalence.pdf
Machado M, Monteiro MM, Atalaia V, 1987. Infection by Mycoplasma bovis in calves. Its isolation from a case of meningitis. Repositório de Trabalhos do Laboratório Nacional de InvestigaÇao Veterinaria, 19:67-74; [2 pl.]; 19 ref
Margineda, C. A., Zielinski, G. O., Jurado, S., Alejandra, F., Mozgovoj, M., Alcaraz, A. C., López, A., 2017. Mycoplasma bovis pneumonia in feedlot cattle and dairy calves in Argentina. Brazilian Journal of Veterinary Pathology, 10(2), 79-86. http://bjvp.org.br/wp-content/uploads/2017/07/v10-n2-7.pdf doi: 10.24070/bjvp.1983-0246.v10i2p79-86
Maunsell F, Brown MB, Powe J, Ivey J, Woolard M, Love W, Simecka JW, 2012. Oral inoculation of young dairy calves with Mycoplasma bovis results in colonization of tonsils, development of otitis media and local immunity. PLoS ONE, 7(9):e44523. http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0044523
McAuliffe L, Ellis RJ, Lawes JR, Ayling RD, Nicholas RAJ, 2005. 16S rDNA PCR and DGGE, a single generic test for detecting and differentiating Mycoplasma species. Journal of Medical Microbiology, 54(8):731-739
McAuliffe L, Ellis RJ, Miles K, Ayling RD, Nicholas RAJ, 2006. Biofilm formation by mycoplasma species and its role in environmental persistence and survival. Microbiology (Reading), 152(4):913-922. http://mic.sgmjournals.org
Nagatomo H, Shimizu T, Higashiyama Y, Yano Y, Kuroki H, Hamana K, 1996. Antibody response to Mycoplasma bovis of calves introduced in a farm contaminated with the organism. Journal of Veterinary Medical Science, 58(9):919-920; 11 ref
Nale HH, Helmboldt CF, Plastridge WN, Stula EF, 1962. Bovine mastitis caused by Mycoplasma species. Cornell Veterinarian, 52:582-591
Nicholas RAJ, 1997. The other M. bovis: Mycoplasma bovis. State Veterinary Journal, 7(1):3-5
Nicholas RAJ, Ayling RD, Stipkovits L, 2001. A saponised vaccine for Mycoplasma bovis induced pneumonia. Proceedings of the third VLA/Mycoplasma Experience Meeting: Advances in Animal and Human Mycoplasmology. Veterinary Laboratories Agency, Addlestone Surrey, May 4th 2001
Nicholas RAJ, Baker S, Ayling RD, Stipkovits L, 2000. Mycoplasma infections in growing cattle. Cattle Practice, 8(2):115-118
Nicholas RAJ, Baker SE, 1998. Recovery of mycoplasmas from animals. In: Miles RJ, Nicholas RAJ, eds. Mycoplasma Protocols. Totowa, USA: Humana Press, 37-44
Nicholas RAJ, Wood, E, Baker S, Ayling RD, 2001. Mycoplasmas isolated from ruminants in Britain 1995-2000. In: Poveda JB, Fernandez A, Frey J, Johnansson K-E, eds. Mycoplasmas of ruminants: pathogenicity, diagnostics, epidemiology and molecular genetics. Vol 5. Brussels, Belgium: European Commission, 116-120
Nicolet J, 1994. Mycoplasma infections in cattle, sheep and goats: methods for diagnosis and prophylaxis. Comprehensive reports on technical items presented to the International Committee or to Regional Commissions 1994., 31-66; 5 ref
O'Farrell K, Dillon P, Mee J, Crosse S, Nolan M, Byrne N, Reidy M, Flynn F, Condon T, 2001. Strategy for restocking Moorepark after depopulation following BSE. Irish Veterinary Journal, 54(2):70-75
Pettersson B, Uhlén M, Johansson KE, 1996. Phylogeny of some mycoplasmas from ruminants based on 16S rRNA sequences and definition of a new cluster within the hominis Group. International Journal of Systematic Bacteriology, 46(4):1093-1098; 24 ref
Pfützner H, 1990. Epizootiology of the Mycoplasma bovis infection of cattle. Zentralblatt für Bakteriologie, Supplement 20:394-399; [Proceedings of the 7th Congress of the International Organization for Mycoplasmology, Baden near Vienna, 1988.]; 8 ref
Pfützner H, Sachse K, 1996. Mycoplasma bovis as an agent of mastitis, pneumonia, arthritis and genital disorders in cattle. Revue Scientifique et Technique - Office International des épizooties, 15(4):1477-1494; 64 ref
Pothmann, H., Spergser, J., Elmer, J., Prunner, I., Iwersen, M., Klein-Jöbstl, D., Drillich, M., 2015. Severe Mycoplasma bovis outbreak in an Austrian dairy herd. Journal of Veterinary Diagnostic Investigation, 27(6), 777-783. http://vdi.sagepub.com/content/27/6/777.abstract doi: 10.1177/1040638715603088
Poumarat F, Belli P, Calavalas D, 1999. Immunoprophylaxis of experimental Mycoplasma bovis arthritis in calves. International Symposium "Mycoplasmas of Ruminants". COST Action 826, Toulouse, France June 2-4, Abstracts, 65
Punyapornwithaya V, Fox LK, Hancock DD, Gay JM, Alldredge JR, 2012. Time to clearance of mycoplasma mastitis: the effect of management factors including milking time hygiene and preferential culling. Canadian Veterinary Journal, 53(10):1119-1122. http://www.canadianveterinarians.net
Reeve-Johnson L, 1999. The impact of mycoplasma infections in respiratory disease in cattle in Europe. In: Stipkovits L, Rosengarten R, Frey J, eds. Mycoplasmas of ruminants:pathogenicity, diagnostics, epidemiology and molecular genetics Vol 3. Brussels: European Commission, 18-31
Rodríguez F, Bryson DG, Ball HJ, Forster F, 1996. Pathological and immunohistochemical studies of natural and experimental Mycoplasma bovis pneumonia in calves. Journal of Comparative Pathology, 115(2):151-162; 25 ref
Rosenbusch RF, Kinyon JM, Apley M, Funk ND, Smith S, Hoffman LJ, 2005. In vitro antimicrobial inhibition profiles of Mycoplasma bovis isolates recovered from various regions of the United States from 2002 to 2003. Journal of Veterinary Diagnostic Investigation, 17(5):436-441
Rosengarten R, Citti C, 1999. The role of ruminant mycoplasmas in systemic infection. In: Stipkovits L, Rosengarten R, Frey J, eds. Mycoplasmas of ruminants: pathogenicity, diagnostics, epidemiology and molecular genetics. Vol 3. Brussels, Belgium: European Commission, 14-17
Ross RF, 1993. Mycoplasmas - Animal pathogens. In: Kahane I, Adoni A, eds. Rapid Diagnosis of Mycoplasmas. New York, USA: Plenum Press, 69-110
Ruhnke HL, 1994. Mycoplasmas associated with bovine genital tract infections. Mycoplasmosis in animals: laboratory diagnosis., 56-62; 33 ref
Sachse K, Salam HS, Diller D, Schubert E, Hoffmann B, Hotzel H, 2010. Use of a novel RT-PCR technique to monitor and quantitate Mycoplasma bovis infection in cattle herds with mastitis and respiratory disease. Veterinary Journal, 186(3):299-303
Schnee C, Schulsse S, Hotzel H, Ayling RD, Nicholas RAJ, Schubert E, Heller M, Ehricht R, Sachse K, 2012. A novel rapid DNA microarray assay enables identification of 37 Mycoplasma species and highlights multiple Mycoplasma infections. PLoS ONE, 7(3):e33237. http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0033237
Senturk S, Mecitoglu Z, Buyukcangaz E, Ozyigit O, 2012. Toxic epidermal necrolysis associated with Mycoplasma bovis in calves. Veterinary Record, 170(22):566. http://veterinaryrecord.bvapublications.com/archive/
Shimizu T, 1982. Isolation of Mycoplasma bovis from calf pneumonia in Japan. Japanese Journal of Veterinary Science 44:981-983
Soehnlen MK, Kunze ME, Karunathilake KE, Henwood BM, Kariyawasam S, Wolfgang DR, Jayarao BM, 2011. In vitro antimicrobial inhibition of Mycoplasma bovis isolates submitted to the Pennsylvania Animal Diagnostic Laboratory using flow cytometry and a broth microdilution method. Journal of Veterinary Diagnostic Investigation, 23(3):547-551. http://vdi.sagepub.com/content/23/3/547.abstract
Taoudi A, Kirchhoff H, Johnson DW, Choukrallah A, 1985. Prevalence of Mycoplasma and Acholeplasma species in cattle exhibiting various clinical diseases and pathological lesions in Morocco. Zentralblatt für Veterinärmedizin, B, 32(7):534-540; 19 ref
Thomas A, Schreiber P, Pirson V, Mainil J, Linden A, 1999. A comparison of four sampling procedures for identification of respiratory mycoplasmas in cattle. In: Stipkovits L, Rosengarten R, Frey J, eds. Mycoplasmas of ruminants: pathogenicity, diagnostics, epidemiology and molecular genetics. Vol 3. Brussels: European Commission, 137-139
Thomas LH, Howard CJ, Gourlay RN, 1975. Isolation of Mycoplasma agalactiae var bovis from a calf pneumonia outbreak in the south of England. Veterinary Record, 97:55-56
Thomas LH, Howard CJ, Stott EJ, Parsons KR, 1986. Mycoplasma bovis infection in gnotobiotic calves and combined infection with respiratory syncytial virus. Veterinary Pathology, 23(5):571-578; [8 fig.]; 29 ref
Uemura R, Sueyoshi M, Nagatomo H, 2010. Antimicrobial susceptibilities of four species of Mycoplasma isolated in 2008 and 2009 from cattle in Japan. Journal of Veterinary Medical Science, 72(12):1661-1663. http://www.jstage.jst.go.jp/browse/jvms/-char/en
Uhaa IJ, Riemann HP, Thurmond MC, Franti CE, 1990. A cross-sectional study of bluetongue virus and Mycoplasma bovis infections in dairy cattle. I. The association between a positive antibody response and production efficiency. Veterinary Research Communications, 14(6):461-470; 15 ref
Urbaneck D, Leibig F, Forbrig Th, Stache B, 2000. Erfahrungsbericht zur Anwedung bestandsspezifischer impfstoffe gegen respiratorische infektionen mit beteiligung von Mykoplasma bovis in einem mastrindergrossbestand. [Experiences with herd specific vaccines against respiratory infections with M. bovis in alarge feedlot.] Der praktische Tierarzt, 81(9):756-763
Wise KS, Calcutt MJ, Foecking MF, Röske K, Madupu R, Methé BA, 2011. Complete genome sequence of Mycoplasma bovis type strain PG45 (ATCC 25523). Infection and Immunity, 79(2):982-983. http://iai.asm.org/cgi/content/abstract/79/2/982
Baumgärtner B, 1999. Diagnosis and control of bovine mastitis caused by Mycoplasma spp. in the western region of Brandenburg - a retrospective study. (Diagnostik und Bekämpfung von Mykoplasmen-Mastitiden des Rindes im westlichen Teil des Landes Brandenburg - ein Rückblick.). Praktische Tierarzt. 80 (10), 894,896-898.
Bois J M, Roy R S, Elazhary Y, 1993. Importance of mycoplasmas in calves with respiratory problems in Quebec. (Importance des mycoplasmes chez des veaux affectés de problèmes respiratoires au Québec.). Médecin Vétérinaire du Québec. 23 (2), 60-63.
CABI, Undated. Compendium record. Wallingford, UK: CABI
CABI, Undated a. CABI Compendium: Status as determined by CABI editor. Wallingford, UK: CABI
Dabiri M, Mirshokraei P, Rad M, Khoramian B, 2017. Detection of Mycoplasma bovis in bulk tank milk samples by nested PCR in Mashhad, Iran. Iranian Journal of Veterinary Science and Technology. 9 (2), 28-32. https://ijvst.um.ac.ir/index.php/veterinary/article/download/57678/13464
Dung Van Nguyen, Chau Kim Thi Truong, 2015. Seroprevalence of Mycoplasma bovis infection in dairy cows in Ho Chi Minh, Vietnam. Open Journal of Veterinary Medicine. 5 (5), 123-126. http://file.scirp.org/Html/3-2280224_56651.htm DOI:10.4236/ojvm.2015.55016
Garg D N, Kapoor P K, Singh Y, 1999. Detection of mycoplasmal antibodies in bovines with reproductive disorders. Indian Journal of Comparative Microbiology, Immunology and Infectious Diseases. 20 (1), 32-35.
Hananeh W M, Al-Momani W M, Ababneh M M, Abutarbush S M, 2018. Mycoplasma bovis arthritis and pneumonia in calves in Jordan: an emerging disease. Veterinary World. 11 (12), 1663-1668. http://www.veterinaryworld.org/Vol.11/December-2018/3.pdf DOI:10.14202/vetworld.2018.1663-1668
Hernández Andrade L, Jaramillo Meza L, 1995. Comparison of the serological test for mastitis caused by Mycoplasma bovis. (Comparación de pruebas serológicas para el diagnóstico de mastitis por Mycoplasma bovis.). Veterinaria México. 26 (4), 353-357.
Jurmanova K, Hajkova M, Krejci J, Jiranek E, 1975. (Ucast mykoplazmat pri hromadnych onemocnenich skotu). In: Vyzkumna zprava, Brno, Vyzkumny ustav veterinarniho lekarstvi, 42s.
Kondracki M, Pilaszek J, Cąkała S, 1992. Polyarthritis in beef cattle due to Mycoplasma bovis. (Zapalenie stawów u młodego bydła opasowego na tle zakażenia Mycoplasma bovis.). Medycyna Weterynaryjna. 48 (8), 359-360.
Kong LingCong, Gao Duo, Jia BoYan, Wang Zi, Gao YunHang, Pei ZhiHua, Liu ShuMing, Xin JiuQing, Ma HongXia, 2016. Antimicrobial susceptibility and molecular characterization of macrolide resistance of Mycoplasma bovis isolates from multiple provinces in China. Journal of Veterinary Medical Science. 78 (2), 293-296. http://www.jstage.jst.go.jp/browse/jvms/-char/en DOI:10.1292/jvms.15-0304
Laak E A ter, Noordergraaf J H, Dieltjes R P J W, 1992. Prevalence of mycoplasmas in the respiratory tracts of pneumonic calves. Journal of Veterinary Medicine. Series B. 39 (8), 553-562. DOI:10.1111/j.1439-0450.1992.tb01205.x
Lysnyansky I, Mikula I, Ozeri R, Bellaiche M, Nicholas R A J, Straten M van, 2017. Mycoplasma bovis seroprevalence in Israeli dairy herds, feedlots and imported cattle. Israel Journal of Veterinary Medicine. 72 (1), 13-16. http://www.ijvm.org.il/sites/default/files/mycoplasma_bovis_seroprevalence.pdf
Machado M, Monteiro M M, Atalaia V, 1987. Infection by Mycoplasma bovis in calves. Its isolation from a case of meningitis. (Infecções por Mycoplasma bovis em vitelos. Seu isolamento a partir dum caso de meningite.). Repositório de Trabalhos do Laboratório Nacional de Investigação Veterinaria. 67-74.
Margineda C A, Zielinski G O, Jurado S, Alejandra F, Mozgovoj M, Alcaraz A C, López A, 2017. Mycoplasma bovis pneumonia in feedlot cattle and dairy calves in Argentina. Brazilian Journal of Veterinary Pathology. 10 (2), 79-86. http://bjvp.org.br/wp-content/uploads/2017/07/v10-n2-7.pdf DOI:10.24070/bjvp.1983-0246.v10i2p79-86
Mettifogo E, Nascimento E R do, Müller E E, Nascimento M da G F do, Freitas J C, 1996. Bovine mastitis due to Mycoplasma bovis. (Mastite bovina por Mycoplasma bovis.). Revista Brasileira de Medicina Veterinária. 18 (1), 22-25.
Nicolet J, 1994. Mycoplasma infections in cattle, sheep and goats: methods for diagnosis and prophylaxis. In: Comprehensive reports on technical items presented to the International Committee or to Regional Commissions 1994. Paris, France: Office International des Epizooties. 31-66.
Nicolet J, 1994a. Mycoplasma bovis: spread of a new pathogen in the cattle population of Switzerland? (Mycoplasma bovis. Ausbreitung eines neuen pathogenen Erregers beim Rindvieh in der Schweiz?). Schweizer Archiv für Tierheilkunde. 136 (2), 81-82.
Pothmann H, Spergser J, Elmer J, Prunner I, Iwersen M, Klein-Jöbstl D, Drillich M, 2015. Severe Mycoplasma bovis outbreak in an Austrian dairy herd. Journal of Veterinary Diagnostic Investigation. 27 (6), 777-783. http://vdi.sagepub.com/content/27/6/777.abstract DOI:10.1177/1040638715603088
Rosengarten R, Citti C, 1999. The role of ruminant mycoplasmas in systemic infection. In: Mycoplasmas of ruminants: pathogenicity, diagnostics, epidemiology and molecular genetics, 3 [ed. by Stipkovits L, Rosengarten R, Frey J]. Brussels, Belgium: European Commission. 14-17.
Taoudi A, Kirchhoff H, Johnson D W, Choukrallah A, 1985. Prevalence of Mycoplasma and Acholeplasma species in cattle exhibiting various clinical diseases and pathological lesions in Morocco. Zentralblatt für Veterinärmedizin, B. 32 (7), 534-540.
Thomas A, Schreiber P, Pirson V, Mainil J, Linden A, 1999. A comparison of four sampling procedures for identification of respiratory mycoplasmas in cattle. In: Mycoplasmas of ruminants: pathogenicity, diagnostics, epidemiology and molecular genetics, 3 [ed. by Stipkovits L, Rosengarten R, Frey J]. Brussels, European Commission. 137-139.
Uhaa I J, Riemann H P, Thurmond M C, Franti C E, 1990. A cross-sectional study of bluetongue virus and Mycoplasma bovis infections in dairy cattle. I. The association between a positive antibody response and production efficiency. Veterinary Research Communications. 14 (6), 461-470. DOI:10.1007/BF00367058
Distribution MapsTop of page
Unsupported Web Browser:
One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using.
Please consider upgrading your browser to the latest version or installing a new browser.
More information about modern web browsers can be found at http://browsehappy.com/