Use of new derivatives of dimethyl sulphate for deriving hereditary variations at oil flux

Abstract

The purpose. To study character and level of correlative variability of selection indexes, breeding value of animals to attributes of exterior and milk productivity in generations on herds with milk yield of 11000–12000 kg. Methods. Correlative variability of breeding value of group and functional attributes of exterior and milk productivity was studied using methods of mathematical statistics with utilization of software package «Statistica 6.1». Results. At the level of milk yields of 11-12 tons positive and statistical-likelihood correlation is preserved between indexes of breeding value of constitution of ancestors and their descendants and run a level both between coarseness of body of parents and milk productivity of their descendants, and coarseness of body of cows of golshtein breed, which is determined by the standard, and absolute milk productivity of the last on population level. The higher, approximated to theoretical and positive correlation is established between indexes of breeding value of both parents and their sons on milk productivity of daughters of sons. High scale of inheritance of economic useful attributes can be gained at selection of bulls, in which genus the tall level of breeding value of these attributes at the father and mothers incorporates. Conclusions. Correlative variability of complex attributes of exterior and productivity of animals of dairy breeds varies during their improvement. Results of researches will help breeders to determine the most effective attributes of selection of pedigree bulls and to ensure fixation directed on martempering economic useful attributes of domestic breeds of cattle.