Association of exterior indicators of the experimental population of Pushkin breeds chickens with an effective marker rs316247861 of the myostatin gene

Abstract

In modern poultry farming, along with classical breeding methods based on phenotype analysis, it is possible to use MAS breeding, which includes genotype assessment. Meat productivity is influenced by live weight and body characteristics of the bird. This article analyzes the influence of the rs316247861 marker of the myostatin gene on the conformation parameters of Pushkin breed chickens. For the analysis, 140 heads of Pushkin breed chickens were taken. Exterior assessment was carried out in chickens at the age of 330 days according to 17 indicators: body weight, body length, body + neck length, oblique body length, thigh length, chest depth, chest width at collarbones, pelvic width, chest girth, metatarsal girth, shin girth , chest angle (degree), keel length, metatarsal length, tibia length, oblique body length with a tape (KDT), tibia length with a tape. PCR-RFLP analysis was performed using the restriction endonuclease BstHHI enzyme. As a result of the study of the experimental population of Pushkin breed chickens, carriers of the CC genotype were significantly superior to individuals with the GG genotype in terms of indicators affecting the formation of poultry meat productivity. In the sample of chickens of the studied population, the value χ2=10.29, which allows us to conclude that the genetic equilibrium is shifted, this is a sign of strong selection pressure. Thus, in the experimental population of the Pushkin breed, the CC genotype is desirable for selection for poultry meat productivity. In this regard, the MSTN gene and its expression product deserve special attention, among the issues of both molecular genetics and animal husbandry.