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Animal Science Database

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Abstract

Recent trends in dairy farm structure in the United States have included a decreasing number of farms, although farm size has increased, especially the share of milk production from very large herds (>2,500 cows). The objectives of this observational study were to describe common management...

Author(s)
Evink, T. L.; Endres, M. I.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2017, 100, 11, pp 9466-9475
Abstract

The objective of this prospective study was to determine associations between occurrence and severity of clinical (CM) and subclinical mastitis (SM) during a defined breeding risk period (BRP, 3 d before to 32 d after artificial insemination) on pregnancies per artificial insemination at first...

Author(s)
Fuenzalida, M. J.; Fricke, P. M.; Ruegg, P. L.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2015, 98, 6, pp 3791-3805
Abstract

The common practice on most commercial dairy farms is to inseminate all cows that are eligible for breeding, while ignoring (or absorbing) the costs associated with semen and labor directed toward low-fertility cows that are unlikely to conceive. Modern analytical methods, such as machine learning...

Author(s)
Shahinfar, S.; Guenther, J. N.; Page, C. D.; Kalantari, A. S.; Cabrera, V. E.; Fricke, P. M.; Weigel, K. A.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2015, 98, 6, pp 3717-3728
Abstract

The objective of this study was to identify genetic markers and genomic regions associated with susceptibility to Mycobacterium avium ssp. paratuberculosis (MAP) infection in Holstein cattle. Associated single nucleotide polymorphisms (SNPs) were identified by genotyping 521 MAP-infected Holstein...

Author(s)
Kirkpatrick, B. W.; Shi, X.; Shook, G. E.; Collins, M. T.
Publisher
Wiley-Blackwell, Oxford, UK
Citation
Animal Genetics, 2011, 42, 2, pp 149-160
Abstract

Data were analysed on the first available D.H.I.A. milk records of 40, 501 Holstein cows in Wisconsin. Intra-sire regressions of daughter records on herd-mate averages were calculated; the latter comprised a 6-mth. fixed season average and a 5-mth. rolling season average. The covariance between...

Author(s)
FAIRCHILD, T. P.; TYLER, W. J.; BARR, G. R.; CORLEY, E. L.
Citation
Journal of Dairy Science, 1966, 49, pp 1416-1425
Abstract

ALLAIRE, F. R. Probabilities arising from dairy sire evaluation models: 958-959.
ATKESON, G. W., MEADOWS, C. E., and McGILLIARD, L. D. Weighting components of type in classifying Holsteins: 977.
AULETTA, F. J., and BLACK, D. L. Effect of oxytocin and central nervous system stimulants on the bovine...

Citation
Journal of Dairy Science, 1968, 51, pp 925-990
Abstract

ARAVE, C. W., and LAMB, R. C. Relationship between a dairy cattle production index and genotype at the serum transferrin and four milk protein loci: 666.
ARORA, K. K., and FREEMAN, A. E. Environmental correlation between paternal half-sibs for milk and milk fat production: 655.
BATRA, T. R.,...

Citation
Journal of Dairy Science, 1970, 53, pp 631-688
Abstract

ALFORD, J. A. The occurrence of penicillin and spreptomycin-resistant microorganisms in diluted bull semen: 579. ASCHBACHER, P. W., SMITH, V. R., and STONE, W. H. A study of the optimum time for insemination: 576. BECKER, R. B., and ARNOLD, P. T. D. Tenure and turnover of desirable dairy bulls in ...

Citation
Journal of Dairy Science, 1953, 36, pp 559-607

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