堤和Sire品种对牧场系统中的羔羊尸体质量和组成的影响
S Maggie Justice1, Elliot Jesch2, Susan K Duckett1
1Department of Animal and Veterinary Sciences, Clemson University, Clemson, SC 29634, USA.
Animals : an open access journal from MDPI
|November 25, 2023
概括
在基于牧场的系统中,Texel (TX) 羊肉改善了羊肉尸体的瘦身和多不和脂肪酸 (PUFA) 含量. 这项研究强调了品种对羔羊肉质量和成分的影响.
科学领域:
- 动物科学动物科学
- 肉类科学 肉科学
- 遗传学 是一个遗传学.
背景情况:
- 品种选择显著影响畜牧生产效率和肉质.
- 了解父母品种的影响对于优化基于牧场的羊羔生产系统至关重要.
- 使用双能X射线吸收计 (DXA) 评估尸体成分为质量评估提供了一种快速方法.
研究的目的:
- 调查Texel (TX) 和Southdown (SD) 雄鹿品种以及SD和Suffolk (SF) 母犬品种对羔羊尸体质量和组成的影响.
- 为了评估DXA在评估牧场养的羊羔尸体瘦身和组成方面的有效性.
- 为了确定品种对脂肪酸概况和肉的柔软度的影响.
主要方法:
- 79只羔羊是由SD和SF母羊与TX或SD公羊的交叉产生的.
- 羊羔在基于牧场的系统中养,粮食补充量有限.
- 测量了尸体质量,成分 (包括DXA分析),肌酸度,脂肪酸概况和剪切力.
主要成果:
- 德克塞尔-sired羔羊展现出较高的尸体重量,ribeye面积,和质量等级相比Southdown-sired羔羊.
- 双能X射线吸收计 (DXA) 预测了Southdown sires与Texel sires的尸体中较高的总和原始脂肪质量.
- 德克塞尔羊羔在肌肉中增加了多不和脂肪酸 (PUFA) 含量,而柔软性不受父品种的影响.
结论:
- 在基于牧场的系统中使用Texel sires可以提高羊肉体的瘦身和有益的脂肪酸概况.
- 品种选择对绵羊肉的特征产生重大影响,为有针对性的生产改进提供了机会.
- 在牧场养的羊羔系统中,DXA是一种可行的工具,用于快速评估尸体的瘦身程度.
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