Increments of breeder rams of the Gorno-Altai breed in the Tyva Republic

The purpose of research is to study the live weight indicators of imported breeder rams of the Altai breed, bred in different regions of the Republic of Tuva. Research objectives are to determine the live weight of breeders, to calculate the absolute and relative increments, to carry out a comparative analysis of the data obtained. The objects of research are rams-breeders of Gorno-Altai breed. The studies were carried out in 2020-2021 in the farms of the Bai-Taiginsky and Sut-Khol Districts (kozhuuns) of the Tyva Republic. The animals were kept under the same conditions. The studies were carried out according to generally accepted methods on the basis of theTuvan Research Institute of Agriculture. The live weight of breeder rams was determined by the method of individual weighing of animals in the spring and autumn seasons of the year. The absolute and relative increments were calculated. The data obtained were processed by the method of variation statistics using the MS Excel 2003 software package. As a result of research, comparative data were obtained on live weight, absolute and relative increment during the off-season in sheep bred in different regions of the Tuva Republic. It was found that the animals bred in the Bai-Taiginsky kozhuun significantly exceeded the breeders of the Sut-Khol kozhuun in live weight, absolute and relative increment by 3.53 kg, 5.33 kg and 17.52 %, respectively. Due to the fact that the studied animals were kept in the same conditions, this may be a consequence of the better eating of pasture fodder by breeder rams owing to the more diverse botanical composition of herbs in the Bai-Taiginsky kozhuun. Thus, research revealed that the imported breeders have been adapted to the conditions of the Tuva Republic, have good live weight and increment, and with improved balanced feeding, breeders with higher weight indicators can be obtained.