Improvement of Belarusian great white breed of pig's traits using marker genes | Повышение продуктивных качеств свиней белорусской крупной белой породы с использованием маркерных генов
2011
Loban, N.A. | Vasilyuk, O.Ya. | Shejko, I.P., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus)
The most of economic traits of agricultural animals appear quantitative ones and have polygenic nature - great number of genes influence development one or another trait. Genes are located in different gene locus. Along with this, there are polygenic loci, responsible for quality traits development. Such loci are named QTL - Quantitative Trait Locus. Animals with high level of productivity have in QTL more preferable alleles, than average in population. Therefore, choice of such animals as parental couples leads to future generations' productivity increase. Polymorphic genes variants of reproductive (ESR) and meat-milk traits (IGF-2) effect on performance of Belarusian Great White Breed of pigs are studied. It is identified that sows with BB genotype of ESR gene surpass (Р less than 0.001) their analogues with AA genotype on multiple pregnancy rate by 0.87–1.57 piglets per farrow. It is also identified that boars with QQ and Qq genotypes of IGF-2 gene surpass their analogues with qq genotype on development and young animals – on meat-milk traits. ESR и IGF-2 genes can be considered as genetic markers of reproductive traits and growing speed of Belarusian Great White Breed of pigs. Selection schemes on improvement of reproductive and meat-quality traits are presented in the article.
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