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A role of Australian merinos in breeding of sheep of Argunskiy type of Zabaikalskaya breed

Abstract

Results are given from investigations carried out under sharply continental climatic conditions of the steppe zone of Transbaikal Territory into the use of Australian Merino rams of the type strong in inseminating ewes of Zabaikalskaya breed with the purpose of obtaining hybrid animals and revealing the most successful crossing variants. The work was done with the purpose of further using hybrids to develop the Argunskiy mutton-wool type of Zabaikalskaya breed. To inseminate ewes were used purebred rams of Zabaikalskaya breed, two to an ewe, and deep-frozen semen of Australian rams. In the following we used half-blood Australianized rams for obtaining Australianized 1/4-blood animals and breeding “in itself”. As a result, we obtained the offspring of 1/2 AMs, 1/4 AMs, 1/2 and 1/4 AMs “in itself”, which was assessed in comparison with purebred Zabaikallskaya sheep as to fertilizing capacity of rams, fertility of ewes and livability of lambs. The changes in live weight of lambs up to 15 months of their age were revealed in the dynamics. Results are given from investigations into the conformation of animals; the conformation indices to detect differences in growth and development were calculated; the manifestation of dog hair in hybrid Australianized sheep was recorded in relation to livability and survival ability of lambs. Data are given on wool production performance and wool quality characteristics. The final lamb accretion on purebred Zabaikalskaya breeds made up 106 animal units, on hybrid Australianized 94 units. The hybrid young lambs of 1/2 AMs, 1/4 AMs, 1/2 and 1/4 AMs “in itself” are characterized by good conformation forms, the developed skeleton, and a deep and broad brisket. The ewes of 1/4 AMs turned out to be most productive. Their live weight at the age of 15 months was 37.92 kg, a fleece was 2.81 kg that was more than those of purebred animals by 1.11 kg and 0.36 kg, respectively.

About the Authors

T. V. Murzina
Zabaikalskiy Agrarian Institute (Branch) of the A.A. Ezhevskiy Irkutsk State Agrarian University
Russian Federation


A. S. Vershinin
Zabaikalskiy Agrarian Institute (Branch) of the A.A. Ezhevskiy Irkutsk State Agrarian University
Russian Federation


T. B. Demidonova
Zabaikalskiy Agrarian Institute (Branch) of the A.A. Ezhevskiy Irkutsk State Agrarian University
Russian Federation


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Review

For citations:


Murzina T.V., Vershinin A.S., Demidonova T.B. A role of Australian merinos in breeding of sheep of Argunskiy type of Zabaikalskaya breed. Siberian Herald of Agricultural Science. 2016;(1):38-45. (In Russ.)

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ISSN 0370-8799 (Print)
ISSN 2658-462X (Online)