Khomichuk O. Increased egg productivity of poultry in the formation of equal weights of communities and the interaction genotype х environment

The object of researches is Forming and realization of genetic potential of egg productivity of bird under act of genotype and paratype factors. Purpose of researches - rise of egg productivity of bird at forming of ravnovesovih groupments with the use of methods of stabilizing selection and determination of co-operation "genotype x environment", conducting of comparative estimation of the best world cross-country races of chickens of egg type. Methods of researches - experimental, zootechnic, laboratory, biochemical, economic. Results of researches: 1. For a theory - complex comparative estimation of productive qualities of bird of highly productive cross-country races of "Hayseks braun" and "Lomann braun" in the conditions of industrial technology of production of food eggs is First conducted. Expedience of forming of ravnovesovih groupments of industrial herds of laying hens of these cross-country races is grounded. Influence of classes of distributing on egg productivity and morphological indexes of eggs of experimental bird is exposed. 2. For practice - Results of the executed researches enable to apply the receptions of stabilizing selection in the industrial poultry farming, to rear a sapling in the ravnovesovih groupments, to form the herd of laying hens and thanks to it promote egg productivity and mass of eggs. Sphere of the use - poultry farming enterprises of Ukraine.