Tagirov KhKh, Iskhakov RS, Zubairova LA, Lamanov AA.

DOI: 10.33284/2658-3135-102-2-98

UDC 636.083:636.088.31(470.52)

Productive qualities of bulls of different breeds depending on keeping technology

Kh Kh Tagirov1,2, R S  Iskhakov1, L A Zubairova1, A. A. Lamanov1

1 Bashkir State Agricultural University(Ufa,Republic of Bashkortostan)

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

Summary. The results of comprehensive studies on the comparative assessment of meat productivity of bulls of Black Spotted, Simmental and Bestuzhev breeds, depending on keeping technology, indicate the superiority of young animals grown and fed indoors, over animals of the same age reared outdoors, according to the main indicators of meat productivity. Thus, in the course of research, the superiority in growth intensity of animals kept indoors was established over the peers from the feedlot over the entire period of experiment, on average, by 7.9 %, and by live weight – by 4.2 %. According to the results of the control slaughter, the heaviest carcasses were obtained from calves raised and fed indoors. According to the weight of hot carcass, they had superiority in comparison with animals of the same age on the feedlot: Black Spotted breed – by 7.6 kg (P≥0.05), Bestuzhev – 8.4 kg (P≥0.05) and Simmental – 18.4 kg (P≤0.05). It was established that the specific weight of protein in the pulp of carcasses of experimental young cattle of all groups was approximately the same, dry matter in the pulp of carcasses of bulls kept indoors increased mainly due to fat. Indoor bull had the best conversion of feed protein to beef protein. They transformed it into a body for 0.39-0.72 % higher than their peers on the feedlots.

Key words: bulls, livestock breed, Black Spotted breed, Bestuzhev, Simmental, technology of livestock keeping, fattening, meat productivity, beef.

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    Tagirov Khamit Kharisovich, Dr. Sci. (Agr.), Profeccor, HeadoftheDepartmentofTechnologyofMeat, DairyProductsandChemistry, Bashkir State Agricultural University, 450001,Ufa, Republic of Bashkortostan, St. 50 years of October, 34;Chief Researcher,Department for Beef Cattle Technology and Beef Production, Federal Research Center for Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 460000, Orenburg, Russia, 29, 9 Januarya St., tel.: 8-905-003-99-27, е-mail: tagirov-57@mail.ru

    Iskhakov Rishat Salmanovich, Dr. Sci. (Agr.),Assoc. Prof., DepartmentofTechnologyofMeat, DairyProductsandChemistry, Bashkir State Agricultural University, 450001,Ufa, Republic of Bashkortostan, St. 50 years of October, 34, tel.: 8-961-361-77-77, е-mail: irs1956@mail.ru

    Zubairova Lilia Albertovna, Cand. Sci (Tech.), Assoc. Prof., DepartmentofTechnologyofMeat, DairyProductsandChemistry, Bashkir State Agricultural University, 450001,Ufa, Republic of Bashkortostan, St. 50 years of October, 34,тел.: 8-996-404-01-49, е-mail: lilija14@mail.ru

    Lamanov Artem Andreevich, ApplicantDepartmentofTechnologyofMeat, DairyProductsandChemistry, Башкирскийгосударственныйуниверситет, Bashkir State Agricultural University, 450001,Ufa, Republic of Bashkortostan, St. 50 years of October, 34, tel.: 3472482870; е-mail: kafedratmm@yandex.ru

Received: 29 May 2019; Accepted: 17 June 2019; Published: 28 June 2019

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