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Abstract

Bovine mastitis is the most costly disease for dairy farmers, hence, control measures to prevent it are crucial for dairy farm sustainability. Staphylococcus aureus is considered a major mastitis pathogen because of its impact on milk quality and low cure rates. Prevention of S. aureus mastitis...

Author(s)
Duarte, C. M.; Carneiro, C.; Cardoso, S.; Freitas, P. P.; Bexiga, R.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Journal of Dairy Research, 2017, 84, 1, pp 80-88
Abstract

The chapter reviews progress in breeding for functional traits which started with efforts to compute genetic evaluations for a range of traits, using different models, for inclusion in a selection index. The chapter also reviews the range of studies of the heritability of key functional traits:...

Author(s)
Weller, J. I.
Publisher
Burleigh Dodds Science Publishing Limited, Cambridge, UK
Citation
Achieving sustainable production of milk. Volume 1: milk composition, genetics and breeding, 2017, pp 209-242
AbstractFull Text

In this study, we present the management practices and microbiological quality of a dairy farm with low bulk tank milk somatic cell count (BTMSCC). In the mentioned farm, BTMSCC was generally <150,000 cells/mL. BTMSCC per day and bulk tank milk (BTM) microbiological analysis per week were carried out during one year. Weekly animal and udder health controls and management evaluations were performed; the somatic cell counts (SCCs) of the milk samples collected in only 21 weeks of the year were over 150,000 cells/mL but this value was never over 320,000 cells/mL in the herd. When the management practices of the weeks with high BTMSCC were evaluated, negative conditions including changes of paddocks of the animals and estrus synchronization were detected. In the samples taken from the milk collection tank for a total of 22 weeks, microbiological isolation occurred; the most common bacterium was Escherichia coli. Udder hygiene, barn hygiene, the cleanliness of the beddings, the care of the employees...

Author(s)
Rİsvanlİ, A.; Seker, I.; Saat, N.; Karagulle, B.; Koseman, A.; Kaygusuzoglu, E.
Publisher
Faculty of Veterinary Science, University of Agriculture, Faisalabad, Pakistan
Citation
Pakistan Veterinary Journal, 2017, 37, 2, pp 175-179
Abstract

The study objective was to assess the effect of hypocalcemia (HYPO; ≤2.0 mmol/L) of the dam at calving on survival, health, and performance of lactating dairy cows and their calves under certified organic management. Prepartum dairy cows (primiparous, n=445; multiparous, n=328) from 1 dairy herd...

Author(s)
Wilhelm, A. L.; Maquivar, M. G.; Bas, S.; Brick, T. A.; Weiss, W. P.; Bothe, H.; Velez, J. S.; Schuenemann, G. M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 4, pp 3059-3067
Abstract

Experiment was conducted on Jersey crossbred cows (12) to compare 2 management practices viz. hand and machine milking. Field investigations were also carried out on other milking management practices, IMI, hygiene status and cleanliness in 3 stages. A total of 459 milk samples were analysed. Farm...

Author(s)
Champak Bhakat; Chatterjee, A.; Mandal, D. K.; Karunakaran, M.; Mandal, A.; Garai, S.; Dutta, T. K.
Publisher
Indian Council of Agricultural Research, New Delhi, India
Citation
Indian Journal of Animal Sciences, 2017, 87, 4, pp 495-500
Abstract

Mastitis is an infectious disease of the mammary gland that leads to reduced milk production and change in milk composition. Complement component C3 plays a major role as a central molecule of the complement cascade involving in killing of microorganisms, either directly or in cooperation with...

Author(s)
El-Halawany, N.; Shawky, A. A.; Al-Tohamy, A. F. M.; Hegazy, L.; Abdel-Shafy, H.; Abdel-Latif, M. A.; Ghazi, Y. A.; Neuhoff, C.; Salilew-Wondim, D.; Schellander, K.
Publisher
Indian Academy of Sciences, Bangalore, India
Citation
Journal of Genetics, 2017, 96, 1, pp 65-73
Abstract

The objective of this study was to assess the control feasibility of Streptococcus agalactiae subclinical mastitis and its impact in reducing somatic cell counts (SCC) of bulk milk tank. During the lactation, 33 cows positive for Streptococcus agalactiae in microbiological culture were treated with ...

Author(s)
Mendonça, L. C.; Gentilini, M. B.; Carvalho, N. L.; Malacco, V. M. R.; Lage, C. F. de A.; Molina, L. R.
Publisher
Universidade Federal Rural do Semi-Árido (UFERSA), Mossoro, Brazil
Citation
Acta Veterinaria Brasilica, 2017, 11, 1, pp 1-5
Abstract

Aerococcus viridians (A. viridans), an environmental Gram-positive bacterium, has been documented to be associated with bovine mastitis. However, its exact role in bovine mastitis and the changes it brings about in milk characteristics are not yet known. The objectives of the current study were to...

Author(s)
Sun Meng; Gao Jian; Ali, T.; Yu Dan; Zhang ShiYao; Khan, S. U.; Fanning, S.; Han Bo
Publisher
Springer, Amsterdam, Netherlands
Citation
Tropical Animal Health and Production, 2017, 49, 4, pp 843-849
AbstractFull Text

Bulk tank somatic cell counts (BTSCC) is widely used to monitore the mammary gland health at the herd and regional level. The BTSCC time series from specific regions or countries can be used to compare the mammary gland health and estimate the trend of subclinical mastitis at the regional level....

Author(s)
Rodrigues, L. G.; Aquino, M. H. C. de; Silva, M. R.; Mendonça, L. C.; Mendonça, J. F. M. de; Souza, G. N. de
Publisher
Centro de Ciências Rurais, Universidade Federal de Santa Maria, Santa Maria, Brazil
Citation
Ciência Rural, 2017, 47, 4, pp e20160618
Abstract

Measuring the electrical conductivity (EC) of milk during milking has been extensively studied in cattle as a low-cost mastitis detection method that can be easily automated. The aim of this work was to study the effect of the health status of the glands and several noninfectious factors (lactation ...

Author(s)
Romero, G.; Roca, A.; Alejandro, M.; Muelas, R.; Díaz, J. R.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 2, pp 1555-1567

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