Natalia V Gizatova, Ilnur F Vagapov, Dim M Fakhreev, Vyacheslav M Gabidulin

DOI: 10.33284/2658-3135-104-3-26

UDC 636.088.31

 The chemical composition of the rib eye of replacement heifers with the inclusion of haylage prepared with the preservative "Biotrof" in their diet

Natalia V Gizatova1, Ilnur F Vagapov1, Dim M Fakhreev1, Vyacheslav M Gabidulin2

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

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

Abstract. A research and economic experiment was carried out in the agricultural production cooperative-collective farm "Hero", located on the territory of the Chekmagushevsky district of the Republic of Bashkortostan in order to establish the influence of the biological product "Biotrof" used in the preparation of alfalfa haylage on meat productivity of bulls, including quality indicators of beef. To conduct research based on the principle of analogues, taking into account live weight, 4 groups of 6-month replacement heifers of Black Spotted breed were formed - control (I) and 3 experimental (II, III and IV), 10 animals each. The difference was that the diets of young animals of groups II, III and IV contained alfalfa haylage harvested using the preservative "Biotrof". According to the results of the control slaughter of three 18-month heifers from each group, the superiority of animals in the experimental groups over the control in terms of the estimated parameters of meat productivity was established. So, young animals of the I (control) group were inferior to their peers from the II, III and IV groups in terms of dry matter content in rib eye by 0.43; 1.51 and 1.05%, fat - by 0.45; 0.39 and 0.37%. While the maximum fat accumulation in rib eye was characteristic of the heifers of group III, they exceeded their peers in groups II and IV in terms of the studied indicator by 0.24 and 0.12%. Due to the higher concentration of protein and fat in young animals of groups II, III and IV, it had a positive effect on the caloric content of 1 kg of muscle. In the second group, the energy value of the last studied indicator was higher by 2.8, in the third - by 7.8 and in the fourth group - by 5.6% when compared with the peers of the first group. Outrunning their peers from the control group in terms of tryptophan content, the heifers of the experimental groups were distinguished by a higher biological value of the rib eye.

Keywords: heifers, Black Spotted breed, feeding, biological products, Biotrof, rib eye, meat productivity.

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Gizatova Natalia Vladimirovna, Cand. Sci. (Biol.), Associate Professor of the Department of Technology of Meat, Dairy Products and Chemistry, Bashkir State Agrarian University, 450001, Ufa, Republic of Bashkortostan, St. 50 years of October, 34, tel.: 8-987-245-12-72, e-mail: natgiz@yandex.ru

Vagapov Ilnur Fargatovich, Cand. Sci. (Biol.), Applicant of the Department of Technology of Meat, Dairy Products and Chemistry, Bashkir State Agrarian University, 450001, Ufa, Republic of Bashkortostan, St. 50 years of October, 34, tel.: 8-987-491-88-18, e-mail: vagapv@gmail.com

Fakhreev Dim Maratovich, Applicant for the Department of Life Safety and Technological Equipment, Bashkir State Agrarian University, 450001, Ufa, Republic of Bashkortostan, St. 50 years of October, 34, tel.: 8-917-785-03-29, e-mail: dimfakhreev@mail.ru

Gabidulin Vyacheslav Mikhaylovich, Dr. Sci. (Agr.), Leading 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, е-mail: Gabidulin.V.M@yandex.ru

 Received: 25 August 2021; Accepted: 13 September 2021; Published: 30 September 2021

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