From genetic to phenotypic trends
نویسنده
چکیده
The performance of pigs is influenced by genetic and environmental factors. Both the genetic merit of the pigs and the environment they are raised in have to be improved continuously to optimise progress in performance. In addition, the requirements of genotypes available today may have changed due to selection and the management of pigs has to be adopted accordingly to maximise phenotypic performance.
منابع مشابه
Genetic and Phenotypic Trends of Fertility Traits in Iranian Holstein Cows
A total of 72124 fertility records was used to estimate the genetic and phenotypic trend of fertility traits in Iranian Holstein cow from 1981 to 2007. Fertility traits in this study were: days from calving to first service (DFS), number of insemination per conception (INS), days open (DO), interval between first and last insemination (IFL), calving interval (CI) and success to first inseminati...
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