Estimation of genetic parameters and non-Mendelian genetic effects in Bos taurus-Bos indicus calves produced by embryo transfer /
(@, slaughter weight (SW) and hot carcass weight (HCW) on
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1996.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (@, slaughter weight (SW) and hot carcass weight (HCW) on 0.37 and 0.37 for BW, 0.28 and 0.33 for WW, 0.58 and 0.61 for 1/4Brahman, 3/4Brahman-1/4Angus and F2 Bos taurus-Bos 590 3/4Angus-1/4Brahman, 3/4BrahrfianY4Angus backcross and additional investigation will be necessary to explain the age at slaughter as covariates. among slaughter-hot carcass weight (0.98), weaning-slaughter and spring from 1991 and 1996. Data for these five traits effects as random effects, cross by gender and year by estimated from a data set on Bos taurus-Bos indicus calves estimated using four regression variables associated with F2progeny from nine mating strategies and bom in both fall for BW and 0. 3 5 and 0.27 for WW, respectively. for gestation length (GL), birth weight (BW), weaning weight Genetic parameters and non-Mendelian genetic effects were Heritability estimates from the multiple trait analysis were higher than those from the single trait analyses and the hypothesis of X or Y-linked inheritance as contributing including direct additive and recipient dam (matemal) indicus calves. Since these data do not support the inheritance and no effects were detected among 3/4Angus- Likelihood (MTDFRENM) computer program. Heritabilities from multiple trait analysis were lower than those from single of reciprocal effects for these five traits were origin of differences between reciprocal backcrosses. produced by embryo transfer. The data set contained records proportion of variance due to matemal effects from the season as fixed effects and age at weaning, days on feed and significant for GL, BW, WW, SW and HCW. Potential causes single and multiple trait analyses were 0.34 and 0.35 for GL, SW and 0.48 and 0.57 for HCW, respectively. The portion of The difference between reciprocal backcrosses was the effects of X and Y chromosomes and cytoplasmic to observed differences in reciprocal F, crosses, trait analyses were 0. 18 and 0. IO for GL, 0. 15 and 0. 12 trait analyses. High genetic correlations were estimated using the Multiple Trait Derivative-Free Restricted Maximum Variance components and heritabilities were estimated by variance due to matemal effects from single and multiple weaning weight (0.87). weight (0.90), weaning-hot carcass weight (0.81) and birth- were analyzed by single and multiple trait animal models |
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| Item Description: | "Major subject: Animal Science". Vita. |
| Physical Description: | xi, 67 leaves ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references: pages 60-66. |