BREEDING, SELECTION, GENETICS
In the article, the results of checking inbred and outbred sheep of the Kuibyshev meat and wool breed, which are semi-siblings, in terms of the quality of offspring, are considered. The assessment showed that under equal conditions of feeding and maintenance, inbred producers were more valuable in breeding terms.
To determine the prepotency, a comparison of different methods of its assessment is given.
The research was carried out in a flock of sheep of the Edilbaevsky breed, where sheep producers of the Hissar breed were used on full-aged queens of the first class. In the resulting offspring, the level and dynamics of live weight for the suckling period and up to 16 months of age, as well as the slaughter indicators of sheep at 2 and 4 months of age were studied. In addition, the rams of the Hissar and Edilbaevsky breeds used in the experiment studied the nature of changes in the level of live weight in various age periods of ontogenesis, as well as the features of the physique by taking measurements of body articles.
The article presents the results of the evaluation of the rams-producers of the Romanov breed on the quality of offspring using index selection.
The article presents the results on the linear growth of sheep of the Volgograd fine-fleeced meat-wool breed and its crossbreeds F3 1/8 bloodline for the North Caucasian meat-wool breed. It was found that cross-bred sheep had better development of individual body articles and a more pronounced meat type of physique.
The article considers the reproduction indicators of the Kazakh broad – tailed breed queens with different wool colors.
The article presents the results of a comparison of the effectiveness of two methods of decornation of goatlings: 1 – dehorning with a thermocauter, followed by removal of the skin area containing the horny bud and 2 – without removing the skin area with the horny bud. It was important to identify a method of, in which the animal will experience less pain and stress.
SHEEP AND GOAT PRODUCTS
The article presents the results of the analysis of the amino acid composition of meat obtained from different types of Edilbay sheep, identifies the advantages of the new «Povolzhsky» type and draws conclusions about the effectiveness of breeding work in LLC «Edilbay».
The article presents data on the physico-chemical parameters, technological properties of milk and the quality of cheese obtained from sheep of the East Frisian and Romanov breeds and their crossbreeds. The information about sheep’s milk with possible deviations from normal milk in terms of titrated acidity and thermal stability is presented.
The article presents the results of feeding and indicators of slaughter of sheep of the Edilbay meat-and-fat breed of sheep obtained from various variants of the selection of parent pairs by live weight.
When selecting parents by live weight, the best indicators of slaughter were characterized by sheep from the selection: large ram × large uterus in comparison with: large ram × medium-sized sheep.
The article considers: the dynamics of live weight and its increase in sheep and sheep of the Romanov breed, depending on the type of birth
ШЕРСТЯНОЕ ДЕЛО
The article considers the main requirements of the criteria for the accreditation of the wool laboratory in the international system “Intervullabs”, the infrastructure of the national and international accreditation systems; the forms of wool sales on the national and international markets. The possibility of accreditation of national wool laboratories in the international system “Intervullabs” and the inexpediency – in the IVTO system.
FEED AND FEEDING
Enzyme-probiotic additive “Bacell”, used for feeding lambs at the age of 25 to 112 days of the milk feeding period, increased the live weight gain by 43.3%, survival rate – by 7.5% and the sale value of lamb – by 19, 3%. Feeding lambs for 40 days (at the age from 25 to 65 days), granulated compound feed “Bioprod” increased live weight (during the experiment) – by 31.9%, survival rate – by 14.4%.
The dynamics of body weight from 3 to 7 months of age are considered; indicators of slaughter at the ages of 3 and 7 months. sheep of the Kuibyshev breed when included in the diet of 1.5 and 2.0 g of metasmart. It was shown that metasmart supplements had a positive effect on body weight gain and slaughter rates. It was noted that the addition of 2 g of metasmart to the diet was more effective.
DISEASE PREVENTION
Data on detection of the arthritis-encephalitis virus of goats in nasal, vaginal and prepucial mucus samples taken from seropositive ELISA animals are presented. This fact explains the spread of infection by airborne droplets with crowded animals and sexually during mating.