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Information × Registration Number 0221U102253, 0119U002087 , R & D reports Title Тo investigate the possibility of improving the quality of mutton provided that the fat tail of the Ascanian Karakul breed sheep be removed. popup.stage_title Head Polska Paraskoviia I, Registration Date 29-01-2021 Organization MF Ivanov Askania-Nova Institute of Steppe Animal Husbandry - National Scientific Breeding and Genetics Center for Sheep Breeding popup.description2 In the sheep intensive types gene pool of the "Askania Nova" breeding farm, breeding registration was carried out, the rams' reproductive qualities of and the ewes' reproductive ability of both breed types were determined. High sexual activity and excellent quality of rams' sperm production of both breed types, regardless of their age, provided a high ewes' fertilizing ability in 2019-97%.A comprehensive 5-point assessment of both breed types lambs at birth was carried out: the animals' proportion of the yielding and desired types is high: in singles-97%, twins - 88%, which indicates the excellent effectiveness of a parental pairs special selection in creating outstanding genotypes. The lambs' growth and development during the suckling period were determined. The best 100 rams and 170 ewes have been selected for directional rearing. A comprehensive assessment of ram sires, ewes and replacement young stock was carried out according to the main breeding characteristics level of development. Individuals of the desired type were also selected for the formation of a selection nucleus and implementation for a tribe.Developed and implemented a plan for individual special selection of parental pairs to create high-performance genotypes. The selection and genetic status of intra-breed types - Ascanian Crossbreds and Ascasnian Black-Headed sheep, as well as the effectiveness of their use in breeding subjects and farms where breeding reproducers are created, has been investigated.Closed gene pool micropopulations of sheep intensive types are consolidated: F12 - F18 (generations) with an established genealogical structure - nine lines and 30 related groups, provide high genetic diversity, and are distinguished by a strong constitution, outstanding acclimatization, adaptive, rehabilitation and reproductive capacity, stress resistance, productive longevity, as well as high meat, dairy, wool and fur productivity with unsurpassed quality characteristics with the hereditary Product Description popup.authors Kalashchuk Halyna P Polska Paraskoviia I popup.nrat_date 2021-01-29 Close