BREEDING, SELECTION, GENETICS
The article focuses on the need to preserve the gene pool of indigenous and a number of endangered domestic sheep breeds, which have a high polymorphism of productivity combined with good adaptability to local conditions of feeding and maintenance.
The article focuses on some problems of holding All-Russian exhibitions on sheep and goat breeding and recommends techniques and methods to improve the organization and conduct of these important events across the country and regions of the Russian Federation.
The article describes the characteristics of Romanov sheep by exterior indicators. The indices of the sheep’s physique are calculated, as well as the relationship of the exterior indicators.
The article presents the results of studying the linear growth of rams, boulders and yarrows of the Romanov breed of sheep. The influence of gender and age on exterior indicators has been studied. It was found that measurements of body articles characterizing the development of the chest, such as chest depth, chest width, chest girth behind the shoulder blades differed in the greatest intensity of growth, height measurements, as well as the oblique length of the trunk and the circumference of the pastern increased less intensively with age. The advantage in the intensity of growth of all measurements of the articles of the body was in the rams.
The article presents an assessment (measurement) of the main measurements of the articles of the body of the bright (4,5; 8; 12 and 14 months. age), received from parents with diff erent toned wool: 58-60 (I gr.), 56-50 (II gr.) and 48 and coarser (III gr.) quality. And also the indices of the physique of the bright are calculated. It was found that in all the studied periods from 4.5 to 14 months of age, the bright ones obtained from queens with 56-50 quality surpass their peers obtained from queens with thinner and coarser hair mainly in measurements: breast width, chest depth, chest girth behind the shoulder blades, etc. measurements.
The article considers the reproduction indicators of the Kazakh fine-wool breed queens and their crossbreeds of different bloodlines with German meat merino sheep – merinofl eishshaf.
SHEEP AND GOAT PRODUCTS
The article presents data on slaughter indicators and morphological composition of sheep carcasses of the Kalmyk short-tailed breed of the SPH “Harba” of the Republic of Kalmykia of two groups: 1) rams aged 7 months – the initial type (control); 2) rams aged 7 months – the improved type (experience) being created.
The article presents data on the milk productivity of Karakul sheep sur Karakalpak breed type. It was noted that during the first 20 days of lactation, the lactation of Karakul queens of sur color is quite high – 1213-1125 g per day.
The article considers data on the morphological composition of the carcasses of sheep of Shakhrinau-Regar breed type of Hissar sheep aged 5 and 18 months.
FEED AND FEEDING
The results of using the flask of the Balasheyskoye deposit of the Samara region in the diets of lactating goats of the Zaanen breed are presented. The inclusion of this additive as a filler in the composition of 1 % and 4 % premixes provides an increase in the dairy productivity of goats and the economic effi ciency of milk production.
MORPHOLOGY, PHYSIOLOGY, BIOCHEMISTRY
A comparative study of the feeding of native (M) and the developed “protected” form of methionine (MP) to sheep revealed a more pronounced positive effect of it in the form protected from the indirect impact of symbiotic microflora on the direction of metabolic processes in the body. The application of the developed method led to a significant improvement in a number of indicators of protein and carbohydrate-fat metabolism, the functional activity of the liver.
The results of the study are presented morphological and biochemical parameters of ram blood when added to diets organic selenium preparation DAFS-25 and a combined feed additive, including the preparation DAFS-25 and additionally sulfur for animal husbandry. Use in diets of these feed additives had a positive impact on the hematological parameters of sheep.