A multidisciplinary assessment of endocrine and morphometric correlates of lactation physiology in southern right whales. [PDF]
Conserv PhysiolShuttleworth L +2 more
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Late gestation metabolizable energy intake is associated with modest differences in adipose tissue insulin responsiveness in antepartum beef cattle. [PDF]
J Anim SciHare KS +4 more
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Investigation of Coxiella burnetii distribution in a Scottish dairy cattle herd with history of stillbirths. [PDF]
Vet RecHalliday JEB +6 more
europepmc +1 more source
Trends in Calving Ages and Calving Intervals for Dairy Cattle Breeds in the United States [PDF]
Journal of Dairy Science, 2006 Trends since 1980 for calving age and calving interval, 2 factors that influence herd life, were examined by parity for 5 breeds of US dairy cattle. Calving data were from cows with records that passed edits for USDA genetic evaluations and were in herds that remained on Dairy Herd Improvement test.
E, Hare, H D, Norman, J R, Wright
exaly +3 more sources
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The economics of calving intervals
Animal Science, 1979ABSTRACTA computerized mathematical model was used to test the economic effect of changing calving intervals under typical high-yielding (63701 per 305 days for mature cows) herd conditions at 1976 prices. The effect of month of first calving was also tested in a herd where four lactations are assumed to follow at equal calving intervals.Under the ...
A. D. James, R. J. Esslemont
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Calving Date versus Calving Interval as a Reproductive Measure in Beef Cattle
Journal of Animal Science, 1983Calving date and calving interval records obtained from the Beef Cattle Division of Pioneer Hi-Bred International, Des Moines, Iowa, were studied to determine the reproductive measure of choice when a fixed breeding season is employed. Fixed model, least-squares procedures were used to analyze 2,411 records collected on purebred Red Angus, Angus and ...
R M, Bourdon, J S, Brinks
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Hematology reference intervals for neonatal Holstein calves
Research in Veterinary Science, 2018Data regarding hematologic reference intervals (RI) for neonatal calves have not been published yet. The aims of this study were: a) to establish hematology RIs for neonatal Holstein calves, b) to compare them with the RIs for lactating cows, and c) to investigate the relationship of age and gender with the hematologic profile of calves.
Nikolaos Panousis +5 more
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Factors affecting the Relationship Between Calving Interval of Cows and Weaning Weights of Calves
Journal of Animal Science, 1986Characters related to production and reproduction were observed on 744 straightbred and F2 calves and their dams produced in a five-breed diallel with Angus, Brahman, Hereford, Holstein and Jersey breeds. These data were analyzed to estimate the effects of these characters on the relationship between weaning weight and calving interval.
P E, Doren, C R, Long, T C, Cartwright
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Multivariate analysis of factors associated with calving interval and calving rate in dairy cows
Theriogenology, 1991We collected data on reproductive events of cows (n = 2116) that included dates of calving, first service, last artificial insemination before pregnancy examination, pregnancy examination, abortion, diagnosis of cystic ovary, and treatment with prostaglandin.
H O, Mohammed, M E, White, N, Lafaunce
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