Reproduction of ewes depending on their behavior when consuming feed

Abstract

The article presents data on the study of reproductive and productive characteristics of sheep of the Grozny fine-fleece breed of different types of eating behavior (PP) in terms of autonomic-nervous activity (GNI). The dispersal of experimental bright colors according to the types of PP into the experimental groups was carried out according to the methods generally accepted in zootechnics by D.K. Belyaeva, V.N. Martynova (1973), V.S. Zarytovsky and others (1990). The principle of selection of individuals is to determine their passive-defensive, orienting reactions in an unusual environment of feed consumption. Scientific and production observations were carried out in the conditions of a specific agricultural enterprise in the Republic of Kalmykia. Our studies indicate that under identical feeding and keeping conditions of bright birds, the highest live weight (40.5 kg) is observed in individuals of the 1st type of PP, while among their peers it was lower by 2.7 and 5.3, respectively. kg. The sex dominant in type 1 flies of PP was much more pronounced, since they entered the state of the first hunt more intensively by 16.6 and 27.2%, respectively, than their counterparts from types 2 and 3. The peculiarities of the behavior of replacement birds at the time of feed consumption were reflected in their subsequent reproductive capacity. Thus, the highest reproduction (110%) of the number of ewes who had clung to ewes had individuals of the 1st type of PP. The lowest fertility (90%) had uterus of the 3 behavioral type. The wool productivity of ewes of different types of feeding behavior was characterized by rather high variability. For example, shearing wool from type 1 ewes PP turned out to be 4.9 and 7.7% more than in type 2 ewes. Survival of offspring by the time of beating and the yield of lambs per 100 ewes that have been clung to each other, depending on the type of PP, varies within wide limits. The highest mortality rate of young animals (11.8%) was observed in queens of the 3rd type of feeding behavior, while the indicators of obtaining offspring (44 heads), survival and yield of lambs per 100 ugly queens in the first group of the 1st type of PP were 100%. In the conditions of sheep farms in the Republic of Kalmykia, in particular in its eastern zone, in order to increase the brood stock, increase the reproductive capacity and productive qualities, it is necessary to use the type of feeding behavior when consuming feed as a “marker” of their selection for the repair and formation of brood stock.