Open AccessVARIABILITY OF INTENSITY OF GROWTH AND DEVELOPMENT OF REPAIR HEIFERS OF DIFFERENT GENOTYPE
Author(s) -
В. М. Гукежев,
М. С. Габаев,
М. А. Губжоков,
Zh. H. Zhashuev
Publication year - 2020
Publication title -
innovacii i prodovolʹstvennaâ bezopasnostʹ
Language(s) - English
Resource type - Journals
ISSN - 2311-0651
DOI - 10.31677/2311-0651-2019-25-3-46-50
Subject(s) - breed , biology , zoology , selection (genetic algorithm) , insemination , offspring , microbiology and biotechnology , pregnancy , genetics , computer science , artificial intelligence
The directed cultivation of repair heifers is of particular relevance in connection with the widespread use of Holstein breed and Holsteinized cattle, during the creation and improvement of which careful selection and raising of repair young animals was of paramount importance. In this regard, a very important element in the cultivation of repair heifers is the establishment of the optimal live weight by the age of insemination. The research results indicate that under the same conditions of feeding and keeping, the offspring of different bulls are significantly different in intensity of growth and development at different age periods and do not always reach the planned indicators.