Line breeding of sheep when creating a new type of Transbaikal breed
https://doi.org/10.26898/0370-8799-2020-2-8
Abstract
The role of line breeding in fine-wool sheep husbandry is shown. Productivity indicators of fine-wool sheep of Transbaikal breed of Khangil type, in the conditions of Trans-Baikal Territory are presented. Four inbred lines were created in the Khangil type of Transbaikal breed, which are distinguished by increased indicators of wool and meat productivity, as well as high wool indicators. These are lines No 616, 8351, 8099, 8349. The positive effect of the new lines on the improvement of productive qualities in the herd of fine-wool sheep of Transbaikal breed of Khangil type was revealed. Line-bred rams exceeded their peers in live weight by 0.5–3.5%, amount of washed wool shorn – 7.2–23.8% (p ˂ 0.01), yield of washed wool – 2.2–6.5 abs.%, wool length – 1.0–8.0%, wool coefficient – 1.7–11.5 g per 1 kg of live weight. Moreover, animals of line No 8351 differ from individuals of other lines in the increased density of wool fibers and significantly finer wool (p ˂ 0.05), corresponding to the 64th quality. Lines No 8099 and 8349 are represented by large individuals with high indicators of live weight and wool productivity, lines No 616 and 8351 are characterized by an increased amount of wool shorn combined with good growth and development indicators. Line-bred ewes exceed the breed standard in live weight by 12.5–24.3%, and the amount of shorn washed wool by 33.8– 40.7%. The length of hair was 9.3–9.6 cm, the proportion of animals with fine wool of 64th quality was 80.1–86.0%. The lines are maintained by selection of ewes both related and unrelated to the ram (line extension) that meet the requirements of the desired type and characteristics of the line.
About the Authors
T. N. Khamiruev
Research Institute of Veterinary Medicine of Eastern Siberia – Branch of the Siberian Federal Scientific Centre of AgroBioTechnologies of the Russian Academy of Sciences; Trans-Baikal Agrarian Institute – Branch of Irkutsk State Agrarian University named after A.A. Ezhevsky
Russian Federation
Russian Federation
Candidate of Science in Agriculture, Lead Researcher
49 Kirova street, Chita, Trans-Baikal Territory, 672039
I. V. Volkov
Research Institute of Veterinary Medicine of Eastern Siberia – Branch of the Siberian Federal Scientific Centre of AgroBioTechnologies of the Russian Academy of Sciences
Russian Federation
Russian Federation
Senior Researcher
Chita
B. Z. Bazaron
Research Institute of Veterinary Medicine of Eastern Siberia – Branch of the Siberian Federal Scientific Centre of AgroBioTechnologies of the Russian Academy of Sciences
Russian Federation
Russian Federation
Candidate of Science in Agriculture, Senior Researcher
Chita
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Review
For citations:
Khamiruev T.N., Volkov I.V., Bazaron B.Z. Line breeding of sheep when creating a new type of Transbaikal breed. Siberian Herald of Agricultural Science. 2020;50(2):64-74. (In Russ.) https://doi.org/10.26898/0370-8799-2020-2-8
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