Estimation of additive and non-additive genetic parameters for carcass traits on bulls in dairy, dual purpose and beef cattle breeds

Hirooka, Hiroyuki; Groen, A.F.; Werf, J.H.J. van der

doi:10.1016/s0301-6226(98)00114-6

Cited by 13 publications

(16 citation statements)

References 19 publications

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“…The first two correlations are consistent with the previous studies on beef and dairy cattle, which have the average estimates of 0.42 (r P = 0.49) and 0.12 (r P = 0.47) Dijkstra et al, 1990;Hirooka et al, 1998;Liinamo et al, 1999;Parkkonen et al, 2000;Eriksson et al, 2003;Hickey et al, 2007). Our estimates for the correlations between conformation and fat seem to be, at first sight, in contrast with the literature average of 0.20 (r P = 0.28).…”

Section: Trait Variationsupporting

confidence: 90%

“…The average heritabilities across breeds for carcass weight, carcass conformation and carcass fat were 0.43, 0.34 and 0.33. Across the studies in which all the three traits have been recorded, the average heritability estimates are 0.30, 0.23 and 0.20, revealing the same pattern as in our data, yet with a lower overall level Dijkstra et al, 1990;Hirooka et al, 1998;Liinamo et al, 1999;Parkkonen et al, 2000;Eriksson et al, 2003;Hickey et al, 2007;Veselá et al, 2011). Our estimate of 0.43 for carcass weight is, however, not unusual.…”

Section: Trait Variationsupporting

confidence: 82%

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Genetic parameters for carcass weight, conformation and fat in five beef cattle breeds

Kause

Mikkola

Strandén

et al. 2015

Animal

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Profitability of beef production can be increased by genetically improving carcass traits. To construct breeding value evaluations for carcass traits, breed-specific genetic parameters were estimated for carcass weight, carcass conformation and carcass fat in five beef cattle breeds in Finland (Hereford, Aberdeen Angus, Simmental, Charolais and Limousin). Conformation and fat were visually scored using the EUROP carcass classification. Each breed was separately analyzed using a multitrait animal model. A total of 6879-19 539 animals per breed had phenotypes. For the five breeds, heritabilities were moderate for carcass weight ( h 2 = 0.39 to 0.48, s.e. = 0.02 to 0.04) and slightly lower for conformation ( h 2 = 0.30 to 0.44, s.e. = 0.02 to 0.04) and carcass fat ( h 2 = 0.29 to 0.44, s.e. = 0.02 to 0.04). The genetic correlation between carcass weight and conformation was favorable in all breeds (r G = 0.37 to 0.53, s.e. = 0.04 to 0.05), heavy carcasses being genetically more conformed. The phenotypic correlation between carcass weight and carcass fat was moderately positive in all breeds (r P = 0.21 to 0.32), implying that increasing carcass weight was related to increasing fat levels. The respective genetic correlation was the strongest in Hereford (r G = 0.28, s.e. = 0.05) and Angus (r G = 0.15, s.e. = 0.05), the two small body-sized British breeds with the lowest conformation and the highest fat level. The correlation was weaker in the other breeds (r G = 0.08 to 0.14). For Hereford, Angus and Simmental, more conformed carcasses were phenotypically fatter (r P = 0.11 to 0.15), but the respective genetic correlations were close to zero (r G = − 0.05 to 0.04). In contrast, in the two large body-sized and muscular French breeds, the genetic correlation between conformation and fat was negative and the phenotypic correlation was close to zero or negative (Charolais: r G = − 0.18, s.e. = 0.06, r P = 0.02; Limousin: r G = − 0.56, s.e. = 0.04, r P = − 0.13). The results indicate genetic variation for the genetic improvement of the carcass traits, favorable correlations for the simultaneous improvement of carcass weight and conformation in all breeds, and breed differences in the correlations of carcass fat.

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Section: Trait Variationsupporting

confidence: 90%

Section: Trait Variationsupporting

confidence: 82%

Genetic parameters for carcass weight, conformation and fat in five beef cattle breeds

Kause

Mikkola

Strandén

et al. 2015

Animal

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“…The estimate of heterosis effects for TM by the Dickerson model was larger than the estimate of dominance effects by the Kinghorn model for all crosses. This has previously been documented in several crossbreeding studies elsewhere (Hirooka et al, 1998;Kahi et al, 2000a;Demeke et al, 2004) and is possibly due to the differences in the definition of heterosis effects in the Dickerson model and the dominance effect in the Kinghorn model. Dickerson (1969Dickerson ( , 1973 defined the heterosis effect as a deviation from parental averages, due to increased average heterozygosity of F 1 crossbreed and this includes epistatic effects.…”

Section: Effects Of Crossbreeding Parameters On Lactation Curve and Lmentioning

confidence: 60%

“…In this study, the hypothesis X of Kinghorn (1980) which considers only additive × additive interactions was assumed. This hypothesis is generally adopted to estimate crossbreeding parameters (Koch et al, 1985;Hirooka et al, 1998;Kahi et al, 2000a). The difference of coefficients between the Dickerson and Kinghorn models was given by Koch et al (1985) and Grosshans et al (1994).…”

Section: Statistical Analysesmentioning

confidence: 99%

Fit of Wood's function to daily milk records and estimation of environmental and additive and non-additive genetic effects on lactation curve and lactation parameters of crossbred dual purpose cattle

et al. 2009

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“…For these reasons, we decided to assume fixed models. According to several studies [2,14,21], the standard errors from models that ignore random effects were smaller than the mixed models and then, they probably were underestimated.…”

Section: Discussionmentioning

confidence: 99%

Correction factors for weight productive traits up to weaning in the Bruna dels Pirineus beef cattle breed

Casellas

Piedrafita

2002

Anim. Res.

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-Correction factors for sex of the calf, birth type and age of dam have been calculated regarding birth weight (BW), weaning weight (WW) and average daily weight gain (DWG) in the Bruna dels Pirineus breed. Standard deviations were heterogeneous for the two levels of sex and homogeneous for the two levels of birth type. Therefore, multiplicative correction factors were better for the sex of the calf, whereas additive correction factors were better for birth type. An age of dam correction resulted in either homogeneous (WW and DWG) or heterogeneous (BW) standard deviations depending upon the trait considered. It was observed that in general the additive correction was better, although this correction failed to completely homogenise the standard deviations within the levels of age of the dam for the respective variables. correction factors / beef cattle / productive traits / Bruna dels Pirineus Résumé -Facteurs de correction des caractéristiques de poids jusqu'au sevrage dans la race à viande bovine Bruna dels Pirineus. Les facteurs de correction relatifs au sexe du veau, au type de naissance (simple ou gémellaire) et à l'âge de la mère ont été calculés pour ce qui concerne le poids à la naissance (BW), le poids au sevrage (WW) et le gain de poids moyen quotidien (DWG) dans la race Bruna dels Pirineus. Les écarts types ont été hétérogènes pour les deux niveaux correspondant au sexe, et homogènes pour les deux niveaux correspondant au type de naissance. Par conséquent, les facteurs de correction multiplicatifs ont été meilleurs pour le sexe du veau, tandis que les facteurs de correction additifs ont été meilleurs pour le type de naissance. La correction prenant en compte l'âge de la mère a entraîné des écarts types homogènes (WW et DWG) ou hétérogènes (BW). En général, la correction additive a été meilleure, bien que cette correction n'ait pas rendu complètement homogène les écarts types dans les niveaux d'âge de la mère pour les variables étudiées.

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Estimation of additive and non-additive genetic parameters for carcass traits on bulls in dairy, dual purpose and beef cattle breeds

Cited by 13 publications

References 19 publications

Genetic parameters for carcass weight, conformation and fat in five beef cattle breeds

Genetic parameters for carcass weight, conformation and fat in five beef cattle breeds

Fit of Wood's function to daily milk records and estimation of environmental and additive and non-additive genetic effects on lactation curve and lactation parameters of crossbred dual purpose cattle

Correction factors for weight productive traits up to weaning in the Bruna dels Pirineus beef cattle breed

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