Boskhaev SL, Gerasimov NP, Zavyalov OA, Frolov AN

 DOI: 10.33284/2658-3135-102-4-87

UDC 636.082:636.22/28.082.13(470.68)

Improving the potential for weight growth of Kalmyk cattle by the method of two- and three-breed crosses with Hereford and Limousin breeds in the conditions of the Republic of Kalmykia

Sanal L Boskhaev, Nikolay P Gerasimov, Oleg A Zavyalov, Alexey N Frolov

Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences (Orenburg, Russia)

Summary. The studies were carried out on purebred bulls of the Kalmyk breed (group I), as well as a crosses ½ Limousine × ½ Kalmyk (group II) and ½ Limousine × ¼ Hereford × ¼ Kalmyk (group III). Animals of all groups were in the same feeding and keeping conditions. The diets were designed to receive an average daily increase of 900-1000 g/day. Weight growth of experimental bulls was studied by monthly weighing. Daily average and absolute gains, the relative rate of weight growth and the coefficients of increase in body weight were calculated. It was established that crossbred bulls of groups II and III exceeded their purebred peers in live weight at birth by 5.4 and 10.8% (P≤0.01), at 12 months – by 4.5 and 6.1 (P≤0.05), at 15 months - by 5.4 (P≤0.05) and 7.7% (P≤0.01), by the end of the experiment (18 months) – by 7.7 (P≤0.01) and 10.4 (P≤0.001)% respectively. At the same time, the effect of genotype on live weight variability varied within 4.61-40.96%, reaching a maximum by 18 months, with a minimum value by 8 months. There were not significant differences in the average daily gain of bulls for the period from birth till 8 months of age. In further, crossbred animals of II and III groups advanced over purebred animals in the period of 8-12 months by 8.9 (P≤0.01) and 10.8% (P≤0.001), 12-15 months – by 9.7 and 16.1% (P≤0.01) and in the period of 15-18 months by 25.5 (P≤0.001) and 32.1% (P≤0.001), respectively. The conclusion was made about the prospects for conducting the breeding work by crossing purebred Kalmyk cattle with Hereford and Limousine sires in the conditions of Kalmykia Republic.

Key words: beef cattle, Kalmyk breed, Limousine breed, Hereford breed, crossbreeding, live weight, average daily weight gain.

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Boskhaev Sanal Leonidovich, external doctorate student of Beef Cattle Breeding Department, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 460000, Orenburg, Russia, 29, 9 Yanvarya St., tel .: 8(3532)30-81-74

Gerasimov Nikolay Pavlovich, Cand. Sci. (Agr.), Senior Researcher, Beef Cattle Breeding Department, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 460000, Orenburg, Russia, 29, 9 Yanvarya St., tel.: 8(3532)30-81-74, e-mail: nick.gerasimov@rambler.ru

Zavyalov Oleg Alexandrovich, Cand. Sci. (Agr.), Senior Researcher, Department of Technology of Beef Cattle Breeding and Beef Production, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 460000, Orenburg, Russia, 29, 9 Yanvarya St., tel.: 8(3532)30-81-78, e-mail: oleg-zavyalov83@mail.ru

Frolov Alexey Nikolaevich, Cand. Sci. (Agr.), Senior Researcher, Department of Technology for Beef Cattle Breeding and Beef Production, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 460000, Orenburg, Russia, 29, 9 Yanvarya St., tel.: 8(3532)30-81-78, e-mail: forleh@mail.ru

Received: 15 November 2019; Accepted: 16 December 2019;Published: 31 December 2019

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