Results 11 to 20 of about 11,071 (289)
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.
openaire +4 more sources
RESEARCH ON THE INFLLUENCE OF THE CALVING INTERVAL ON MILK YIELD [PDF]
Scientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2014 The paper goal was to study the influence of the calving interval on milk yield for the Romanian Brown breed, using 950 lactations, of which: 573 lactations (60.31 %) belonged to the over 400 days calving interval and 377 lactations (39.69%) belonged to ...
Agatha POPESCU
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Random Regression Analysis of Calving Interval of Japanese Black Cows. [PDF]
Animals (Basel), 2021 We estimated genetic parameters for the calving interval of Japanese Black cows using a random regression model and a repeatability model. We analyzed 92,019 calving interval records of 36,178 cows. Pedigree data covered 390,263 individuals.
Ogawa S, Satoh M.
europepmc +2 more sources
Revista de la Facultad de Ciencias AgrariasThe objective of this study was to evaluate milk production, age at first calving, and calving to conception interval in Holstein, Brown Swiss, and Holstein x Brown Swiss crossbred cows within a pasture-based dairy system in Argentina. The increasing
Victoria Cañete +4 more
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Environmental Factors Affecting Some Productive and reproductive Traits in Egyptian Buffaloes [PDF]
Benha Veterinary Medical Journal, 2017 This study was conducted to evaluate the effect of some environmental factors on milk production in Egyptian buffaloesand the effect of parity and season of calving on calving interval and days open.
Darwish A. +3 more
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Animal, 2013 The effects of first calving (FC) in Holstein heifers on their first lactation, second lactation and lifetime milk production were examined from an initial database of 459 743 animals that first calved between 1 January 1990 and 31 July 2010 in Wallonia,
E. Froidmont +5 more
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JDS Communications, 2021 Within seasonal dairy systems, cows that calve late in the calving season are less likely to become pregnant and maintain a yearly calving interval. Very few studies have examined effective strategies for reproductive management of these late-calving ...
S.G. Moore +7 more
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Phenotypic effects of calving ease on the subsequent fertility and milk production of dam and calf in UK Holstein-Friesian heifers [PDF]
, 2011 The effect of calving ease on the fertility and production performance of both dam and calf was studied in approximately 50,000 and 10,000 UK Holstein-Friesian heifers and heifer calves, respectively. The first objective of this study was to estimate the
Coffey, M.P. +14 more
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Scientific Papers Animal Science and Biotechnologies, 2023 Is generally known there is antagonistic relationship between production and reproduction traits. We observed this relationship in dataset of 1 197 478 daily milk records of Holstein cows on the first lactation only, first time calved during years 2003 ...
Zuzana Riecka, Juraj Candrák
doaj
Prolonged Calving Intervals in the Nili Ravi buffalo
Italian Journal of Animal Science, 2010 The optimal calving interval for dairy buffaloes is found to be 12 to 13 months. The losses due to prolonged calving interval are amounted to one USA dollar per extra day of optimal calving interval.
S. Nasir Hussain Shah
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