Khamit Kh Tagirov, Nataliya Yu Nikolaeva, Enje M Andriyanova

DOI: 10.33284/2658-3135-104-2-24

UDC 636.08(571.16)

Slaughtered indicators of bulls and steers of Hereford breed in the Tomsk region conditions

Khamit Kh Tagirov1, Nataliya Yu Nikolaeva2, Enje M Andriyanova1

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

2Tomsk Agricultural Institute-Branch of FSBEI HE Novosibirsk State Agrarian University (Tomsk, Russia)

Summary. The slaughter qualities of bulls and steers of the Hereford breed, raised in the Pervomaisky district of the Tomsk region, were studied. For the experiment, two groups of 10 heads were formed: bulls and steers. Cattle slaughter was carried out at the age of 18 months. The predominance of the increase in live weight in bulls compared with steers was revealed during the entire study period: from 3 months of age by 6.5 kg, in the period from 12 to 18 months by 19.6–25.6 kg. A decrease in the growth rate with increasing age of the experimental animals is characteristic. The most intensive growth was noted in bulls in the first month of life, outstripping by 3% of their steers peers. Bulls dominated by the value of the pre-slaughter weight and the weight of the fresh carcass by 25.6 and 39 kg, respectively. Steers dominated by the content of internal fat by 10 kg. The maximum carcass yield and slaughter yield are typical for bulls - 5% and 3% more than in castrated animals. When assessing the amount of offal, it was found that the maximum share falls on the intestines and blood (22-24%), the skin (7%) and the head (4%). The bulls have more mass of internal organs, skin, tail and head than steers.

Key words: bulls, steers, Hereford breed, slaughter qualities; internal organs.

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Tagirov Khamit Kharisovich, Dr. Sci. (Agr.), Professor, 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.: (347)248-28-70; e-mail: tagirov-57@mail.ru

Nikolaeva Nataliya Yuryevna, Cand. Sci. (Biol.), Associate Professor, Head of the Department of Agronomy, Production Technology and Processing of Agricultural Products of Tomsk Agricultural Institute-branch of FSBEI HE Novosibirsk State Agrarian University, 634050, Tomsk, 19 Marx St., tel. (3822)53-23-61, e-mail: agrocafedra@mail.ru

Andriyanova Enje Mirsaitovna, Cand. Sci. (Biol.), Senior Lecturer at the Department of Physiology, Biochemistry and Animal Feeding, Bashkir State Agrarian University, 450001, Ufa, Republic of Bashkortostan, St. 50 years of October, 34, tel.: 8(3472)-228-07-17, e-mail: endge2018@yandex.com

Received: 24 May 2021; Accepted: 15 June 2021; Published: 30 June 2021

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