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Molecular population genetic analysis of Staphylococcus aureus recovered from cows.
- V. Kapur, W. Sischo, R. Greer, T. Whittam, J. Musser
- Biology, Medicine
- Journal of clinical microbiology
- 1 February 1995
Staphylococcus aureus is one of the most common causes of bovine mastitis. To estimate genetic relationships among S. aureus strains recovered from cows, 357 isolates from milk samples from worldwide… Expand
Using time-lapse video photography to assess dairy cattle lying behavior in a free-stall barn.
The objectives of this observational study were to use time-lapse video photography to document dairy cow behavioral patterns, examine factors affecting lying behavior, and to develop guidelines for… Expand
Effect of rubber flooring on claw health in lactating dairy cows housed in free-stall barns.
- J. Vanegas, M. Overton, S. L. Berry, W. Sischo
- Biology, Medicine
- Journal of dairy science
- 1 November 2006
Multiparous dairy cows between 10 to 30 d in milk (DIM) were enrolled in a clinical trial to evaluate the effects of rubber flooring on the development of claw lesions, locomotion scores, clinical… Expand
Prevalence of trichomoniasis among California beef herds.
- R. Bondurant, M. Anderson, +7 authors B. Weigler
- Journal of the American Veterinary Medical…
- 15 May 1990
Sixty cow-half herds of more than 50 cows each were randomly selected for a prevalence survey of bovine trichomoniasis in California. Herd size, as judged by the number of bulls, ranged from 1 to 210… Expand
Detection of classical and newly described staphylococcal superantigen genes in coagulase-negative staphylococci isolated from bovine intramammary infections.
The coagulase-negative staphylococci (CNS) are the most prevalent mastitis pathogen group yet their virulence characteristics have not been well described. We investigated the presence of 19… Expand
Animal and farm influences on the dynamics of antibiotic resistance in faecal Escherichia coli in young dairy calves.
It is believed that the intensive use of antibiotics in the management of disease in pre-weaned calves contributes to high levels of antibiotic resistance in commensal and pathogenic bacteria. We… Expand
Effect of feeding live yeast products to calves with failure of passive transfer on performance and patterns of antibiotic resistance in fecal Escherichia coli.
- K. Galvão, J. E. P. Santos, A. Coscioni, M. Villaseñor, W. Sischo, A. Berge
- Medicine, Biology
- Reproduction, nutrition, development
- 1 July 2005
Fifty-two newborn Holstein calves with serum IgG concentrations less than 0.73 g.dL(-1) were randomly assigned to one of four treatments: no added live yeast (control), 0.5 g of live yeast added to… Expand
Preliminary field evidence for the association of clinical mastitis with altered interestrus intervals in dairy cattle.
Clinical mastitis and reproductive records from two southern California dairy herds were used in a cross-sectional study to determine the risk of an altered interestrus interval following clinical… Expand
Mortality, morbidity, case-fatality, and culling rates for California dairy cattle as evaluated by the National Animal Health Monitoring system, 1986-87.
Abstract During 1986 and 1987, mortality, morbidity, case-fatality, and culling rates were estimated for endemic disease conditions in 43 randomly selected California dairy farms. Data were collected… Expand
Quality assessments of waste milk at a calf ranch
Nonsaleable whole milk from dairy farms is potentially an economical, nutritious source of feed for neonatal calves but it can have serious quality problems. Many calf-rearing operations that utilize… Expand