3 results for “Culling Rate”

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Research ArticleOpen accessPhrase in the titleEFFECT OF PUERPERAL METRITIS ON HOLSTEIN COWS PRODUCTIVE, REPRODUCTIVE VARIABLES AND CULLING RATESA. Dawod, Byeng R. MinThe objective of the study was to determine the effect of puerperal metritis prevalence in high yielding Holstein cows on productive (305 days, actual milk yields), reproductive (days to first estrus, days open and services per conception) variables and culling rates. Throughout the study, 2885 dairy records were collected from high yielding private Holstein dairy farm (average milk yield was … …American Journal of Animal and Veterinary Sciences, Vol. 9, Issue 3 · 12 Nov 2014 · 6,950 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEffect of an IgY-Based Immunomodulatory Combo on the Internalization of Staphylococcus aureus by HC11 Cells: Preliminary in vitro Studies IIZarete Jatna Isha, Adu-Addai BenjaminInfectious mastitis is a common disease of cattle of economic significance. Clinical mastitis affects between 20 to 25% of dairy cows each year. Staphylococcus aureus (SA) causes an estimated 10-11.7% of bovine infectious mastitis cases in the US, reducing milk production, increasing morbidity, increasing antibiotic use and milk waste, and fueling premature culling. The SA mastitis cure rate varies from … …American Journal of Infectious Diseases, Vol. 21, Issue 1 · 1 Feb 2026 · 2,814 accessesView PDF Cite

Research ArticleOpen accessIn the abstractImproving Performance of Replacement Heifers in Hot Arid Environment Under Intensive ManagementM. A. Razzaque, S. A. Mohammed, T. Al- Mutawa, M. BedairProblem statement: Imported Holstein Friesian dairy cattle are exposed to hot arid climate in feedlot management in Kuwait. Desert climate is extreme reaching high 45-50°C in summer and low -4ºC in winter at day and night respectively. High calf mortality, poor reproduction and milk yields were main constraints to viable dairying. The objectives of this study were to assess the … …American Journal of Animal and Veterinary Sciences, Vol. 4, Issue 4 · 31 Dec 2009 · 6,983 accessesView PDF Cite