Heritabilities of reproductive traits in a beef cattle herd using multitrait analysis
نویسندگان
چکیده
منابع مشابه
Estimates of heritabilities and correlations of traits associated with pelvic area in beef cattle.
Pelvic measurements, cow weights and cow ages were obtained on 703 Angus- and Hereford-sired cows from five Louisiana Agricultural Experiment Station herds. Cows were either purebred or crossbred, ranging in age from 1 to 14 yr, and sired by 52 Angus and 63 Hereford bulls. All pelvic measurements were obtained via the rectum by the same technician. Paternal half-sib heritability estimates and g...
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The objective of the present study was to detect quantitative trait loci (QTL) for male reproductive traits in a half-sib family from a Bos indicus (Brahman) x Bos taurus (Hereford) sire. The sire was mated with MARC III (1/4 Hereford, 1/4 Angus, 1/4 Red Poll and 1/4 Pinzgauer) cows. Testicular traits were measured from 126 male offspring born in 1996 and castrated at 8.5 months. Traits analyse...
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The present study was undertaken to estimate the performance of some reproductive traits of Red Chittagong Cattle (RCC) is an important indigenous Farm Animal Genetic Resource of Bangladesh having some efficient reproductive capabilities. The effect of parity on these traits was also studied. The study was conducted in the nucleus herd of RCC Project at Bangladesh Agricultural University (BAU) ...
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Random regression models (RRM) and multitrait models (MTM) were used to estimate genetic parameters for growth traits in Brazilian Brahman cattle and to compare the estimated breeding values obtained by these 2 methodologies. For RRM, 78,641 weight records taken between 60 and 550 d of age from 16,204 cattle were analyzed, and for MTM, the analysis consisted of 17,385 weight records taken at th...
متن کاملProceedings, Applied Reproductive Strategies in Beef Cattle
Commercial artificial insemination (AI) is arguably one of the greatest animal biotechnologies introduced in the 20 century. The benefits of improved genetics and reduced disease transmission have been readily recognized and accepted by the dairy producer, and at present, approximately 70% of the US dairy cattle population are bred by AI. Since the introduction of commercial AI in the early 194...
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ژورنال
عنوان ژورنال: South African Journal of Animal Science
سال: 2000
ISSN: 2221-4062,0375-1589
DOI: 10.4314/sajas.v30i4.3946