Results 41 to 50 of about 2,018,275 (336)
Scientific Papers Animal Science and Biotechnologies, 2023 Puerperal period is the most critical period from the productive life of females, at the borderline between physiologic and pathologic. In this stage some reproductive turbulence may appear (uterine subinvolution, uterine infections, ovary inactivity ...
Nicolae Păcală +9 more
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The effects of maternal calving date and calving interval on growth performance of beef calves
South African Journal of Animal Science, 2000 This study was undertaken to investigate the growth performance of calves born to dams with different calving dates and calving intervals. Early calving dams produced calves with the lowest birth weights, the highest actual weaning weights and the highest pre-breeding heifer weights.
MacGregor, R.G., Casey, N.H.
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Genetic relationships between calving date, calving interval, age at first calving and type traits in beef cattle [PDF]
Livestock Production Science, 2002 In this paper the genetic relationships between major reproductive traits in beef cattle (Calving Date, Calving Interval and Age at First Calving) and type traits have been estimated to evaluate the usefulness of type classification in predicting reproductive performance in beef cattle.
Gutiérrez, J.P. (Juan) +5 more
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Italian Journal of Animal Science, 2010 Reproductive rate is an important component of economic success in livestock production. Parturition interval (IEP) is a direct measure of the productivity of the animal. Long IEP reduce the number of calves produced per year.
J.C. De Souza +6 more
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Effect of Parity on Productive Performance and Calving Interval in Water Buffaloes
, 2018 The aim of this study was to determine the effect of the parity on productive performance (lactation length, total milk yield and milk yield by day of calving interval) and calving interval in water buffaloes.
H. Nava-Trujillo +3 more
semanticscholar +1 more source
Tropical and Subtropical Agroecosystems, 2017 Records of beef cows from a ranch in southern Mexico gave 1967 birth weights (BW), 1587 weaning weights adjusted to 210 days of age (AWW) and 2001 calving intervals (CI) for the comparison of the breed groups: Brahman (BR), Guzerat (GU), Nellore (NE) and
J. Segura +5 more
semanticscholar +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
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ASSOCIATION OF TRANSFERRIN POLYMORPHISM WITH REPRODUCTVE TRAITS OF GIR CATTLE [PDF]
Exploratory Animal and Medical Research, 2012 The present study on 28 known genotype of Gir cattle was carried out to investigate the association of transferrin polymorphism with different reproductive traits at the Department of Animal Genetic and Breeding, West Bengal University of Animal and ...
R. Guha, P.K. Senapati, S. Taraphder
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Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, 2001 Records of 71 buffaloes, raised under a semi-intensive production system in a university herd, collected from 1993 to 1999, were used to study the effect of some nongenetic factors on milk performance and causes of calf mortality.
M. Mourad, S. Rashwan
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Fertility and fertility management in thirteen well-established organic dairy herds in the UK [PDF]
, 2002 This report was presented at the UK Organic Research 2002 Conference of the Colloquium of Organic Researchers (COR). Milk production and breeding records from thirteen organic dairy herds were collected between January 1997 and December 1999.
Hanks, James +3 more
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