Statistical tools to detect genetic variation for a sex dimorphism in piglet birth weight1
نویسندگان
چکیده
منابع مشابه
Statistical tools to detect genetic variation for a sex dimorphism in piglet birth weight.
Sex differences in birth weight contribute to within-litter variability, which itself is connected to piglet survival. Therefore, we studied whether the sex difference in piglet birth weight is a genetically variable sex dimorphism. For that purpose a linear mixed model including sex-specific additive genetic effects was set up. A hypothesis testing problem was defined to detect whether these g...
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The objective of this study was to ascertain whether maternal additive genetic variance exists for within-litter variation in birth weight and for change in within-litter variation in piglet weight during suckling. A further objective was to estimate maternal genetic correlations of these two traits with mortality, birth weight, growth, and number of piglets born alive. Data were obtained from ...
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Sexual dimorphism is a widespread phenomenon and contributes greatly to intraspecies variation. Despite a long history of active research, the genetic basis of dimorphism for complex traits remains unknown. Understanding the sex-specific differences in genetic architecture for cranial traits in a highly dimorphic species could identify possible mechanisms through which selection acts to produce...
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ژورنال
عنوان ژورنال: Journal of Animal Science
سال: 2011
ISSN: 0021-8812,1525-3163
DOI: 10.2527/jas.2009-2692