Estimates of genetic parameters for carcass traits in Finnish Ayrshire and Holstein-Friesian

Parkkonen, Päivi; Liinamo, Anna-Elisa; Ojala, Matti

doi:10.1016/s0301-6226(99)00144-x

Cited by 17 publications

(19 citation statements)

References 10 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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“…This could be the reason for higher heritability coefficients in their study. Parkkonen et al (2000) calculated considerably lower values of heritability coefficient (h 2 = 0.07-0.14) for carcass weight in dairy cattle in Finland. Their heritability coefficients for carcass conformation (h 2 = 0.16-0.31) and carcass fatness (h 2 = 0.08-0.16) were comparable with our values.…”

Section: Resultsmentioning

confidence: 82%

“…Eriksson et al (2003) estimated genetic parameters for these traits by a linear animal model in beef breeds Charolais, Hereford and Simmental in Sweden. Parkkonen et al (2000) studied the estimation of genetic parameters for carcass traits in Finnish Ayrshire and Holstein-Friesian cattle. They used a linear animal model, linear sire model and linear sire maternal grandsire model for estimations.…”

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confidence: 99%

Linear and linear-threshold model for genetic parameters for SEUROP carcass traits in Czech beef cattle

Veselá¹,

Vostrý²,

Šafus³

2011

CZECH J ANIM SCI

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The objective of this study was to estimate genetic parameters for the results of classifying of carcass traits by the SEUROP method in beef cattle in the Czech Republic using linear and linear-threshold models. Genetic parameters were calculated and evaluated in a set of 4276 animals of eleven beef breeds and crosses with dairy and dual-purpose breeds (Aberdeen Angus – 1376, Hereford – 994, Simmental – 651, Charolais – 524, Piemontese – 185, Galloway – 162, Blonde d’Aquitaine – 147, Limousine – 106, Highland – 53, Gasconne – 44, Belgian Blue – 34) in 2005–2008. Aberdeen Angus, Hereford, Charolais and beef Simmental were the most numerous breeds. Fixed effect of a classifier, fixed regression on age at slaughter by means of Legendre polynomial of the second degree separately for the each breed and sex and fixed regression on heterosis coefficient were included in a model equation. Genetic parameters were estimated by a multi-trait animal model using a linear model and a linear-threshold model in which carcass weight (CW) was considered as the linear trait and carcass conformation (CC) and carcass fatness (CF) grading as threshold traits. The heritability coefficient for CW differed only moderately according to the method of the genetic parameter estimation (0.295 in linear model and 0.306 in linear-threshold model). The heritability coefficient for CC was 0.187 in linear model and 0.237 in linear-threshold model. The heritability coefficient for CF grading was 0.089 in linear model and 0.146 in linear-threshold model. Genetic correlation between CW and CC was high (0.823 in linear model and 0.959 in linear-threshold model), the correlation between CW and CF was intermediate (0.332 and 0.328, respectively) and it was low between CF and CC (0.071 and 0.053). If CW was included in the model equation as fixed regression using Legendre polynomial, lower heritability coefficients for CC (0.077 and 0.078) and CF (0.086 and 0.123) were calculated and the correlation between CC and CF was negative (–0.430 and –0.429).

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“…Considerable a�ention has been paid to the carcass traits of ca�le, e.g. slaughter weight, lean and fat content and most of the traits have been found to be of high or moderate heritability (Gregory et al, 1994;Wheeler et al, 1996;Parkkonen et al, 2000). Some of the studies established a relationship between the breed of the sires and the carcass composition of slaughtered bulls.…”

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confidence: 99%

Carcass value of the progeny of tested beef bulls

Polách¹,

Šubrt²,

Bjelka³

et al. 2004

Czech J. Anim. Sci.

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ABSTRACT:In the study focused on the estimation of the efficiency of beef cattle in the conditions of the Czech Republic, 361 half-carcasses of the offspring of crossbred bulls of tested young beef sires were dissected. The bulls were fa�ened together and slaughtered at the age of 500 ± 30 days. The tested breeds were Aberdeen Angus (AA), Blonde d'Aquitaine (BA), Belgian Blue (BB), Charolais (CH), Hereford (HE), Limousine (LI), and Piemontese (PI). The control groups were bulls of the Czech Pied (C) and Holstein (H) breeds. The best commercial class according to the SEUROP system was found in the offspring of Charolais sires (3.17). The fat content was the highest in the BB group (2.45) and the lowest (P < 0.01) in the PI group (1.50). The average hot carcass weight was 332.54 kg and was significantly (P < 0.05) the lowest in bulls of the HE group (290.50 kg). A�er dissection the dressing percentage of meat, bone, separable fat, and the meat/bone ratio were calculated. The average meat percentage in the carcass was 78.47%. The dressing percentage of meat of PI group was 80.33% and was the highest of all the groups (P < 0.01). H group showed the highest proportion of bones (19.79%), which was by 2% higher than in PI group. The content of separable fat ranged between 1.29 and 3.68%.

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Estimates of genetic parameters for carcass traits in Finnish Ayrshire and Holstein-Friesian

Cited by 17 publications

References 10 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

Linear and linear-threshold model for genetic parameters for SEUROP carcass traits in Czech beef cattle

Carcass value of the progeny of tested beef bulls

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