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精饲料油菜籽水平对肉牛生产性能及肉品质的影响

DOI: 10.3969/j.issn.1006-267x.2013.03.010

Keywords: 油菜籽,肉牛,生产性能,肉品质

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Abstract:

本试验旨在探讨精饲料油菜籽水平对肉牛生产性能及肉品质的影响。选取40头体况良好、平均体重为(447.00±35.67)kg的西门塔尔杂交牛,随机分为4组,每组10头,分别饲喂4种不同油菜籽水平[0(对照组)、8.7%、17.6%和26.0%]的精饲料。预试期10d,正试期90d。结果表明:1)17.6%油菜籽组平均日增重最高,比对照组和26.0%油菜籽组分别高6.40%(P>0.05)和15.03%(P<0.05)。2)胴体重、屠宰率及净肉率均随油菜籽水平的增加呈先升高后降低的变化趋势,其中17.6%油菜籽组胴体重显著高于其他各组(P<0.05),对照组屠宰率和净肉率显著低于17.6%油菜籽组(P<0.05)。3)精饲料油菜籽水平对肉牛眼肌面积、大理石花纹、高档肉块重、肉骨比及肉质常规成分均无显著影响(P>0.05)。4)17.6%油菜籽组肉样剪切力最低,显著低于对照组(P<0.05),肉样嫩度最好。综合各项指标,精饲料油菜籽水平为17.6%时,能够显著提高肉牛生产性能和肉品质。

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