Results 1 to 10 of about 68,613 (266)
Veterinary Clinics of North America: Food Animal Practice, 2018 As an infectious, contagious pathogen, Salmonella is probably rivaled by only bovine viral diarrhea virus in its ability to cause clinical disease, such as enteritis, septicemia, pneumonia, and reproductive losses. The increasing prevalence of Salmonella, particularly Salmonella Dublin, on dairies presents new challenges to producers and veterinarians.
Holschbach, Chelsea L., Peek, Simon F.
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Niacin for dairy cattle: a review [PDF]
British Journal of Nutrition, 2008 Due to the incorporation of niacin into the coenzymes NAD and NADP, niacin is of great importance for the metabolism of man and animals. Apart from niacin in feed and endogenous formation, microbial niacin synthesis in the rumen is an important source for dairy cows.
Inka-Donata, Niehoff +2 more
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Gait assessment in dairy cattle
Animal, 2009 Lameness is one of the most important dairy cow welfare issues and has inspired a growing body of literature on gait assessment. Validation studies have shown that several methods of gait assessment are able to successfully distinguish cows with and without painful pathologies.
F.C. Flower, D.M. Weary
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Advances in Reproduction in Dairy Cattle
Journal of Dairy Science, 1981 In 1956, Willett (185) reviewed developments in reproductive physiology and artificial insemination. His review dealt principally with dairy cattle, but it also encompassed relevant work with other species and summarized the state of the art at that time.
J H, Britt, N M, Cox, J S, Stevenson
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Genomic evaluations for crossbred dairy cattle [PDF]
JDS Communications, 2022 This short review discusses genomic evaluations for crossbreed dairy cattle from a New Zealand perspective. I briefly introduce the cow population and farm systems that have resulted in high crossbreeding rates and provide a short history of across-breed genetic and genomic evaluations used in New Zealand since 1996.
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Energy Metabolism of Dairy Cattle
Journal of Dairy Science, 1981 Energy metabolism research during the past 25 yr has resolved many uncertainties of energy use by lactating cows. Use of metabolizable energy for milk production essentially is unaffected by milk yield but is slightly influenced by its source. Estimates of efficiency of use for milk production (60 to 64%) are lower than earlier estimates (69 to 70 ...
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Selective attention in dairy cattle [PDF]
Behavioural Processes, 2016 In a replication of Reynolds (1961), two cows learned to discriminate between compound stimuli in a forced choice procedure where pushing through a one-way gate marked with a red cross (S+) gave access to food. Pushing through a one-way gate marked with a yellow triangle (S-) gave no access to food.
Blackmore, Tania Louise +2 more
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External Parasites of Dairy Cattle
Journal of Dairy Science, 1982 Insects such as stable flies, house flies, horn flies, face flies, mosquitoes, horse flies, deer flies, cattle grubs, and lice as well as ticks and mites are the major external parasites of dairy animals in the United States. These pests cause obvious discomfort to livestock and economic effects of heavy populations usually are discerned easily ...
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