Genetic relationships among calving ease, calving interval, birth weight, and weaning weight in the Asturiana de los Valles beef cattle breed1
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چکیده
منابع مشابه
Genetic relationships among calving ease, calving interval, birth weight, and weaning weight in the Asturiana de los Valles beef cattle breed.
The aim of this paper was to estimate direct and maternal genetic parameters for calving ease (CE), birth weight (BrW), weaning weight (WW), and calving interval (CI) to assess the possibility of including this information in beef cattle improvement programs. Field data, including a total of 59,813 animals (1,390 sires and 1,147 maternal grand sires) from the Asturiana de los Valles beef cattle...
متن کاملGenetic relationships among calving ease, gestation length, and calf survival to weaning in the Asturiana de los Valles beef cattle breed.
The aim of this paper was to estimate the genetic relationships among calving ease (CE), calf survival (CS), and gestation length (GL) to assess the possibility of including this information in beef cattle breeding programs. A total of 35,395 field records were available for CE, 30,684 for GL, and 36,132 for CS from the Asturiana de los Valles beef cattle breed. The 3 traits were analyzed as tr...
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 کاملCytoplasmic line effects for birth weight and preweaning growth traits in the Asturiana de los Valles beef cattle breed
Article history: Received 28 June 2011 Received in revised form 9 September 2011 Accepted 12 September 2011 A total of 15,645 records of birth weight (BrW), weaning weight (WW) and average daily gain (ADG) from 6055 cows belonging to 2121 different dam lines were analyzed to quantify the contribution of cytoplasmic line (l) effects to phenotypic variance of preweaning growth traits in a sample ...
متن کاملSire contemporary group interactions for birth weight and preweaning growth traits in the Asturiana de los Valles beef cattle breed
Although a number of recent studies have focused on the existence of a non-negligible sire contemporary group interaction effect (s) affecting the estimation of genetic parameters for maternally influenced traits in beef cattle, the assessment and interpretation of this effect using field data remains poorly understood. In this study 27,639 records of both birth weight (BW) and weaning weight (...
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ژورنال
عنوان ژورنال: Journal of Animal Science
سال: 2007
ISSN: 0021-8812,1525-3163
DOI: 10.2527/jas.2006-168