EFFECTIVENESS OF BREEDING TUVINIAN HYBRID HALF-HAIR SHORT-FAT TAILED SHEEP

Abstract

The history of development of Tuvinian-Saradzha hybrid half-hair sheep in the Republic of Tuva is stated. Hybridization was carried out between Saradzha fat-rumped half-hair rams and native hair and fine-fleece-hair ewes. There are described major economic characters of modern hybrid half-hair and hair sheep used for hybridization. There are given comparative data on growth energy, meat and wool production of the young stock obtained from crossing hybrid half-hair rams with half-hair and hair ewes. The most intensive growth of the young stock occurs during their suckling period and at the age of 8.5 months. By the period of weaning from mothers, the lambs at 5 months of age reached live weights of 25.4-26.0 kg, at 8.5 months of age 34.7-37.8 kg. The scientific principles are presented, and practical recommendations are given to use hybrid half-hair rams as improvers of hybrid half-hair and hair ewes for developing a new type of Tuvinian half-hair short-fat tailed sheep adapted to conditions of Tuva well.