Selection of a suitable data set and model for the estimation of genetic parameters of the weaning weight in beef cattle

Vostrý, L.; Přibyl, J.; Veselá, Zdenka; Jakubec, V.

doi:10.5194/aab-50-562-2007

Cited by 10 publications

(14 citation statements)

References 19 publications

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“…Therefore, animal species could be prevented from adequately increasing body weight and body framework size on the one hand, and milk production on the other. The influences of the sire × year interaction or the sire × herd interaction on the growth abilities of beef cattle were not demonstrated in the Czech Republic (Vostrý et al, 2007). A one-sided increase in calf weight is not desirable for greater ease of calving in terms of direct or maternal effect.…”

Section: Coefficients Of Heritability and Genetic Correlationmentioning

confidence: 94%

“…Pre-weaning growths were defined by average daily gains. Only animals that were descendants of a sire with 5 or more offspring, sires that had offspring in at least two contemporary groups (Herd-Year-Season: HYS), dams with two or more offspring, and bulls born within contemporary groups (HYS) exceeding at least 5 animals were considered (Vostrý et al, 2007). Statistical model.…”

Section: Methodsmentioning

confidence: 99%

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Genetic evaluation of the growth of beef bulls at a performance test station

Vostrý¹,

Veselá²,

Krupa³

2014

J. Anim. Feed Sci.

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Section: Coefficients Of Heritability and Genetic Correlationmentioning

confidence: 94%

Section: Methodsmentioning

confidence: 99%

Genetic evaluation of the growth of beef bulls at a performance test station

Vostrý¹,

Veselá²,

Krupa³

2014

J. Anim. Feed Sci.

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“…Each animal possessed an 88-100 % gene share of the breeds concerned. Data were adjusted so that the components of variance among all considered effects would be estimable (VOSTRÝ et al 2007). The data set comprised:…”

Section: Genotypesmentioning

confidence: 99%

Estimation of animal × environment interaction in Czech beef cattle

Vostrý

Přibyl

Schlote³

et al. 2009

Arch. Anim. Breed.

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The objective was the estimation of animal × environment interaction for weaning weight (WWT) of the most frequent breeds of beef cattle in the Czech Republic. The environment was represented by 3 areas: Mountain (1), Foothills (2) and Lowland (3). A pairwise analysis was carried out between the areas: 1 vs 2 (n=5 149) and 2 vs 3 (n=4 971) for the estimation of (co)variance components and genetic correlations between the environments. A multiple-trait animal model was used where weaning weights in different areas were considered as different traits. The direct and maternal heritability estimates of WWT were for area (1): 0.12 (direct) and 0.05 (maternal); for (2): 0.26 and 0.11 (direct), 0.10 and 0.11 (maternal) and for (3): 0.26 (direct) 0.03 (maternal). Direct and maternal genetic correlations were between: 1 and 2 0.98 and 0.65 respectively, with standard deviations 0.03 and 0.37 respectively, and between 2 and 3: 0.82 and 0.50 respectively, with standard deviations 0.12 and 0.31 respectivly. The magnitude of the across-areas genetic correlation indicates that the animal by environment interaction was not biologically important and can be ignored in the evaluation of beef cattle in the Czech Republic. Keywords

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“…Considerable maternal (indirect) genetic effects on production traits have been reported in mammals (BRADE and GROENEVELD 1999, MANIATIS and POLLOT 2002, NÄSHOLM 2004, KESBI et al 2008, REINSH and KALM 1995, VOSTRY et al 2007) and poultry , PAKDEL et al 2002, SCHÜLER et al 1996. By contrast to many livestock species, there are few studies on maternal effects in ducks.…”

Section: Introductionmentioning

confidence: 99%

Maternal genetic effects on body weight and breast morphological traits in duck population under selection

et al. 2010

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Direct and maternal additive genetic and mitochondrial variances of duck meat performance traits were estimated using AI-REML algorithm. Records of 3 099 (5 010 pedigreed birds) from six consecutive generations were included. The following four traits were investigated: body weight at 3rd week, body weight at 7th week, sternum crest length at 7th week (in cm), and breast muscles thickness at 7th week (in cm). The data were analysed via three single trait linear animal models: I -additive genetic model, II -model extended to additive maternal effects; III-as model II with mitochondrial effects as random. Adequacy of the models was examined by Akaike´s information criterion (AIC). Relatively high direct additive heritability estimates were obtained for body weight at 3rd week (0.4326-0.4546) and body weight at 7th week (0.5322-0.6088) whereas lower estimates were obtained for sternum crest length (0.1756-0.2744) and breast muscles thickness (0.1369-0.2932). The maternal heritabilities were moderate and also considerably depended on the model used. For all of the studied traits a negative covariance between direct and maternal genetic effects was found. Mitochondrial heritabilities were very low. Generally, on the basis of criteria employed, the model III can be suggested for analysis of body weight whereas for other traits model II seems to be suitable. Keywords

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Selection of a suitable data set and model for the estimation of genetic parameters of the weaning weight in beef cattle

Cited by 10 publications

References 19 publications

Genetic evaluation of the growth of beef bulls at a performance test station

Genetic evaluation of the growth of beef bulls at a performance test station

Estimation of animal × environment interaction in Czech beef cattle

Maternal genetic effects on body weight and breast morphological traits in duck population under selection

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