期刊论文详细信息
Online journal of biological sciences | |
Fattening Performance of Bulls of three Breeds Fattened Semi-Intensively in the Kostanay Region | |
Aitzhanova, Indira1  | |
关键词: Fattening Performance; Beef Bulls; Daily Gains; Carcass Dressing Percentage; Carcass Conformation and Fat Cover in the Europ System; Fat; Protein; Dry Matter; | |
DOI : 10.3844/ojbsci.2017.157.165 | |
学科分类:生物科学(综合) | |
来源: Science Publications | |
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【 摘 要 】
The aim of this study was to determine the effect of cattle breed on carcass traits and meat quality of bulls fattened semi-intensively and slaughtered at 18 months of age. The animals were divided into three experimental groups: Group AA - 16 Angus bulls, group WK - 19 Kazakh White headed bulls, group AK - 20 Kazakh Aulie-Ata bulls. All bulls were slaughtered at the end of the fattening period. Angus bulls had the highest (p≤0.05) final body weight (494.9 kg) at 18 months of age. Average daily gain was also highest (p≤0.01 and p≤0.05) in group AA (863 g). Angus bulls were characterized by the highest carcass dressing percentage (56.8%) and the highest fat content (3.4%). Carcass length and thigh circumference were significantly (p≤0.05) higher in AA bulls than in AK bulls. The content of lean meat and fat in the carcass was highest (79.4%, p≤0.05) in AA bulls and lowest in AK bulls. Samples of semitendinosus muscle collected from AA bulls had the highest content of dry matter (24.89%), protein (22.5%) and fat (2.27%, p≤0.05).【 授权许可】
CC BY
【 预 览 】
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RO201902011187272ZK.pdf | 175KB | ![]() |