Comparison of models for estimating genetic parameters and predicting breeding values for birth weight and calving ease in Czech Charolais cattle
نویسندگان
چکیده
منابع مشابه
Genetic parameters for calving ease, gestation length, and birth weight in Charolais cattle.
In this study, a 3-trait linear model was used to obtain genetic parameters for direct and maternal components of calving ease (CE), gestation length (GEST), and birth weight (BWT). Calving ease scores were transformed into Snell scores and expressed as percent unassisted calving (SC), ranging from 0 to 100% (least to greatest ease). A total of 40,420 records (n = 14,403 for CE) were obtained f...
متن کاملGenetic relationships among calving ease, birth weight and perinatal calf survival in Charolais cattle*
Perinatal calf mortality affects profitability of beef cattle production systems, hence, it would eventually be beneficial to include this trait in a breeding goal. The objectives of this study were to estimate the environmental effects and heritabilities of and genetic correlations among birth weight (BW), calving ease (CE) and calf survival (CS) in Charolais cattle, in the Czech Republic. The...
متن کاملGenetic parameters for calving difficulty, stillbirth, and birth weight for Hereford and Charolais at first and later parities.
The aim of this study was to estimate direct and maternal genetic parameters for calving difficulty score, stillbirth, and birth weight at first and later parities for Charolais and Hereford cattle in Sweden. Calving traits have long been recorded for pure-bred beef cattle in Sweden, but only birth weight has been used in the selection in order to avoid calving difficulties. Linear animal model...
متن کاملGenetic parameters for calving and conformation traits in Charolais × Montbéliard and Charolais × Holstein crossbred calves1
Charolais sires can be mated to Montbéliard or Holstein dairy cows to produce crossbred calves sold for meat production. Heritabilities and correlations between traits can differ when they are calculated within Charolais × Montbéliard or within Charolais × Holstein population. Moreover, the genetic correlation between the same trait measured on Charolais × Montbéliard and on Charolais × Holstei...
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ژورنال
عنوان ژورنال: Czech Journal of Animal Science
سال: 2014
ISSN: 1212-1819,1805-9309
DOI: 10.17221/7529-cjas