Additive and non-additive, direct and maternal genetic effects for growth traits in a multibreed population of beef cattle
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چکیده
منابع مشابه
Genetic Parameters of Direct and Maternal Effects for Growth Traits of Afshari Sheep
The genetic parameters and (co) variance components of body weight at birth (BW), weaning (WW) and six months of age (BW6) and average daily gain (ADG) pre and post-weaning of Afshari sheep were estimated using restricted maximum likelihood (REML) methodology and animal model implemented in DFREML software. The likelihood ratio test (LRT) was used to compare the models. Year of birth, age of mo...
متن کاملAdditive and nonadditive genetic variability for growth traits in the Turipaná Romosinuano-Zebu multibreed herd.
Intrabreed additive genetic, environmental, and phenotypic variances and covariances for Romosinuano (R) and Zebu (Z), as well as interbreed nonadditive genetic variances and covariances (sire x breed-group-of-dam interactions), for birth weight (BWT), weaning weight (WW), and postweaning gain (GW) were computed using a Romosinuano-Zebu multibreed data set from the Turipaná Experiment Station i...
متن کاملLivestock Production Estimated Additive and Non - additive Breed Effects and Genetic Parameters for Ultrasound Scanned Traits of a Multi - breed Beef Population in Tropical Australia
Direct additive, dominance and genetic parameters for ultrasound scan traits of a multi-breed population involving European, British, Sanga and Brahman breed types were estimated. A generalized ridge regression technique was used to eliminate high associations among some of the genetic effects in the model. Clear breed type effects were observed for all scanned traits. European breeds had negat...
متن کاملGenetic parameters for growth traits of Australian beef cattle from a multibreed selection experiment.
Estimates of covariance components and genetic parameters were obtained for birth, weaning, 200-d, and 400-d weight for a herd of Polled Herefords and a herd of a multibreed synthetics, the so-called Wokalups. Data originated from an experiment in Western Australia selecting for preweaning growth rate. Analyses were carried out by REML fitting an animal model including genetic and permanent env...
متن کاملPre-weaning growth traits of the Hereford breed in a multibreed composite beef cattle population
Data from a multibreed composite beef cattle population, managed under intensive irrigated grazing conditions, were used to estimate direct additive heritabilities (ha), maternal heritabilities (h 2 m) and maternal permanent environmental effects (c) for birth weight (BW) and weaning weight (WW) of the calf and cow efficiency of the dam (CE: WW/dam weight x 100). Calves born between 1968 and 19...
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ژورنال
عنوان ژورنال: Archivos de medicina veterinaria
سال: 2003
ISSN: 0301-732X
DOI: 10.4067/s0301-732x2003000200013