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Abstract

Background: Within the last decade, Salmonella enterica subsp. enterica serovar Cerro (S. Cerro) has become one of the most common serovars isolated from cattle and dairy farm environments in the northeastern US. The fact that this serovar is commonly isolated from subclinically infected cattle and ...

Author(s)
Rodriguez-Rivera, L. D.; Switt, A. I. M.; Degoricija, L.; Fang, R.; Cummings, C. A.; Furtado, M. R.; Wiedmann, M.; Bakker, H. C. den
Publisher
BioMed Central Ltd, London, UK
Citation
BMC Genomics, 2014, 15, 427, pp (4 June 2014)
Abstract

The objective was to evaluate the individual and combined effect of anovulation and cytological endometritis (CTE) on the reproductive performance of dairy cows. A total of 1,569 cows from 3 data sets were used. In data set 1, 403 Holstein cows from 5 dairies in New York were used. In data set 2,...

Author(s)
Vieira Neto, A.; Gilbert, R. O.; Butler, W. R.; Santos, J. E. P.; Ribeiro, E. S.; Vercouteren, M. M.; Bruno, R. G.; Bittar, J. H. J.; Galvão, K. N.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2014, 97, 9, pp 5415-5425
Abstract

Heat stress during the dry period reduces milk yield in the subsequent lactation of dairy cows. Our objectives were to quantify the economic losses due to heat stress if dry cows are not cooled and to evaluate the economic feasibility of dry cow cooling. We used weather data from the National...

Author(s)
Ferreira, F. C.; Gennari, R. S.; Dahl, G. E.; Vries, A. de
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 12, pp 9931-9941
Abstract

Fecal specimens were obtained from mature milking cows on farms in Vermont, New York, Pennsylvania, Maryland, Virginia, North Carolina, and Florida. Polymerase chain reaction (PCR)-positive specimens for Enterocytozoon bieneusi were found in 24 of 541 cows examined (4.4%) and on 12 of 14 farms. The ...

Author(s)
Fayer, R.; Santín, M.; Trout, J. M.
Publisher
Springer-Verlag GmbH, Heidelberg, Germany
Citation
Parasitology Research, 2007, 102, 1, pp 15-20
Abstract

Selection for milk production alone may result in some cows that have lower energy efficiency (increased energy efficiency index - EEI - Mcal of metabolisable energy (ME) required per kg of milk) on the diets available due to limitations in dry matter intake (DMI), increased body size relative to...

Author(s)
Tedeschi, L. O.; Fox, D. G.; Roseler, D. K.
Publisher
Wageningen Academic Publishers, Wageningen, Netherlands
Citation
7th International Workshop on Modelling Nutrient Digestion and Utilisation in Farm Animals, Paris, France, 10-12 September, 2009., 2010, pp 252-262
Abstract

Fecal specimens were obtained from 12-24-month-old dairy heifers on farms in Vermont, New York, Pennsylvania, Maryland, Virginia, North Carolina, and Florida. PCR positive specimens for Enterocytozoon bieneusi were found in 131 of 571 heifers examined (23%) and on all the farms visited. The...

Author(s)
Santín, M.; Trout, J. M.; Fayer, R.
Publisher
Springer-Verlag GmbH, Heidelberg, Germany
Citation
Parasitology Research, 2005, 97, 6, pp 535-538
Abstract

Feces collected from 541 milking cows on two dairy farms each in Vermont, New York, Pennsylvania, Maryland, Virginia, North Carolina, and Florida were examined for the presence of Cryptosporidium oocysts. Oocysts were concentrated from 15 g of feces from each cow and DNA was extracted. A two-step...

Author(s)
Fayer, R.; Santin, M.; Trout, J. M.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2007, 145, 3/4, pp 260-266
Abstract

The prevalence of Cryptosporidium species in 1-2-year-old heifers was determined for 571 animals on 14 dairy farms in seven states on the East Coast of the United States. A fecal specimen collected directly from each heifer was processed to concentrate oocysts that were then examined by polymerase...

Author(s)
Fayer, R.; Santín, M.; Trout, J. M.; Greiner, E.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2006, 135, 2, pp 105-112
Abstract

To determine the prevalence of Giardia genotypes in 12-24 month old dairy heifers, fecal specimens were collected from two farms each in Vermont, New York, Pennsylvania, Maryland, Virginia, North Carolina, and Florida. Specimens, cleaned of fecal debris and concentrated using CsCl density gradient...

Author(s)
Trout, J. M.; Santín, M.; Greiner, E. C.; Fayer, R.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
Veterinary Parasitology, 2006, 140, 3/4, pp 217-222
Abstract

Faecal specimens were obtained from a total of 413 dairy calves from farms in Vermont, New York, Pennsylvania, Maryland, Virginia, North Carolina, and Florida. After removal of faecal debris by sieving and density gradient centrifugation, specimens were examined by fluorescence microscopy,...

Author(s)
Fayer, R.; Santín, M.; Trout, J. M.
Publisher
Springer-Verlag, Berlin, Germany
Citation
Parasitology Research, 2003, 90, 5, pp 383-386

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