The article presents the results of genotyping of sheep of the Tatarstan meat-wool breed. For the first time, the polymorphism of the GH, CAST, GDF9 genes of sheep, queens, and repair young animals of this breed was studied and analyzed. The specificity of the allelic spectrum of genes that control meat productivity, expressed in different frequencies of occurrence of both alleles and genotypes, is established. Animal carriers of selection-significant alleles were identified at the loci of the studied genes. Based on the genetic and statistical analysis, it was concluded that the proportion of especially valuable genotypes in the studied population of sheep of the Tatarstan breed is relatively low. Regular screening to identify the desired genotypes and their widespread inclusion in the breeding process will create conditions for the accumulation of selection-significant genetic markers in the breeding herds of sheep of the Tatarstan breed bred in the Republic of Tatarstan.

Some problems of sheep breeding are described. A phenomenological approach for predicting the lifetime usefulness of sheep for selection by a set of characteristics is justified. An effective system for organizing and using software for breeding in sheep farming is proposed.

The article considers the results of using rams of the Lincoln breed of English and Australian breeding of different blood types in order to improve their productive qualities of the gene pool herd.

The paper presents a comparative assessment of the shearing and wool properties of sheep of the Argun meat-wool type of the TRANS-Baikal fine-wool breed and its half-blood cross-breeds with Australian and Russian meat Merinos.

The article considers the relationship of polymorphic systems of proteins (transferrin and hemoglobin) and blood enzymes (arylesterase and alkaline phosphatase) with economically useful features of Queens of the North Caucasian meat and wool breed.

There are 768 thousand dairy goats in Russia. Dairy goat breeding is represented by 4 breeds: Zaanensky, Alpine, Nubian, Mursiano-Granadina. The number of breeding animals is 12.3 thousand. The main factors hindering the development of dairy goat breeding are: the weak domestic base of breeding animals of the dairy direction of productivity and the shortage of goats for creating new farms in agricultural organizations; the lack of evaluation standards and forms of breeding accounting until recently; negative consequences of the adoption of veterinary regionalization rules that prevent the spread of breeding animals and genetic material throughout the country. The development of the breeding base in dairy goat farming will take place gradually due to the transformation of large and medium-sized farms into breeding organizations.

The article shows the slaughter rates of 4.5 months. rams obtained from semi-fine Akzhaik meat-wool sheep with manufacturers Akzhaik, North and Kuibyshev rocks. In General, the carcasses of all rams were well formed and characterized the sheep of the meat-wool direction of productivity; the best indicators of slaughter had descendants from producers of the Kuibyshev breed.

The article provides data on the meat productivity of lamb Karachay breed depending on different seasons of birth, different age of weaning lambs, different conditions of their cultivation.

The article presents research data on the milk productivity of sheep of the Karachay breed of sheep in conditions of keeping them in high-altitude Alpine pastures and prisel pasture areas of the Karachay-Cherkess Republic

The article presents the results of studying the quality of sheep wool of the South Ural, Altai, Stavropol, and North Caucasus meat and wool breeds. It was found that the most coarsened wool in all topographic areas of the rune was characterized by sheep of the North Caucasian meat-wool breed.

In 2019, a new breed of sheep was tested artlukh Merino-meat-wool direction of productivity. Fineness of wool sheep breed artlukh Merinos different age groups within 21,0-23,0 fim (64 quality). The basic sheep of the Dagestan mountain breed have a thin cross-breed wool and corresponds to a low value-24-26 microns (60-58 quality). The natural length of the wool of sheep artlukh Merino from 9.35 to 10.35 cm, which is 15.1-24.3% higher than peers of different age and sex groups of the dagestan rock.

The article presents the results of studying the wool productivity of rams of the South Ural, Altai, Stavropol, and North Caucasus meat and wool breeds. The cut of wool and the yield of wool were studied.

The dynamics of the number of goats by category of farms and the wool productivity of adult goats of different types of wool cover are presented.

The article provides information about methods for testing fiber diameter of wool, gives a detailed description of the tested parameters, as well as information on the capabilities of innovative laboratory equipment for testing and certification of the quality of wool.

The article presents data on the effect of vitamin-mineral premix 81-2 “SulfVite” on productive performance of edilbaev breed.

The results of the influence of feeding the feed additive “Ja-rosil” on the safety, growth rate and live weight of Romanov lambs from multiple litters during the dairy period are presented.

The article presents: the biochemistry of blood serum, the main slaughter indicators and the quality of meat of young sheep who received antioxidants in the diet in liposomal form with organic iodine content, the intensification of serum enzymes responsible for the functioning of the liver and pancreas and an increase in the level of protein in the muscle tissue of animals of the experimental group by 1.35 abs.%.

The problems of selection in Russian sheep breeding related to the shortcomings in creating new breeding achievements are briefly described. It is proposed: to include data on the evaluation of producers by offspring in the application for new breeding achievements; to make it mandatory to present in the application in the form of a machine -readable document (a spreadsheet or an automated database) primary materials for individual accounting of all sheep of the new breeding achievement. Independent checks of the availability and quality of sheep identification in the field are proposed for acceptance of the application.

This article discusses the state of Affairs in the breeding base of sheep breeding in a number of regions of the Russian Federation and provides scientific- based proposals of the authors for its preservation.