年龄和饮食对体和母羊肉质量的影响
Cecilia Rivera-Bautista1, Alicia Grajales-Lagunes2, Alejandro Relling3
1Facultad de Agronomía y Veterinaria - Centro de Biociencias Universidad Autónoma de San Luis Potosí, Soledad de Graciano Sánchez, San Luis Potosí, 78321, Mexico.
Heliyon
|November 30, 2023
概括
与草干草相比,杀羊食缩食改善了体重增加和尸体产量. 年龄和饮食显著影响了兰布伊耶羊的尸体特征和肉质.
科学领域:
- 动物科学动物科学
- 类动物营养 类动物营养
- 肉类科学 肉科学
背景情况:
- 了解年龄和饮食对绵羊生产的影响对于优化肉质和产量至关重要.
- 兰布尤耶羊在绵羊养殖中代表着重要的品种,需要研究它们的营养管理.
- 饮食策略,包括缩与料配给,可以影响动物的表现和尸体属性.
研究的目的:
- 调查年龄 (年龄小羊与屠宰母羊) 和饮食 (草干草与缩饮食) 对尸体特征和肉质的影响.
- 确定兰布尤耶羊的最佳养策略,以提高生产性能和肉类参数.
主要方法:
- 根据年龄和饮食 (花花或100%缩饮食) 将40只兰布尤耶羊分为四个治疗组.
- 动物经历了为期10天的适应期,随后进行了为期35天的数据收集期.
- 评估的参数包括生产性能,尸体特征 (重量,尺寸),肉质 (pH,颜色) 和特定蛋白质含量.
主要成果:
- 缩饮食增加了干物质摄入量和冷尸体重量,导致较高的尸体产量 (CY).
- 与年龄较大的母羊相比,屠宰母羊的热体重量更大,瘦肉颜色属性更好 (CIELAB L*,a*,b*,c*,h*).
- 饮食没有影响料转化率或某些肉质参数,如pH和cathepsin含量.
结论:
- 养Rambouillet羊的100%缩饮食可以显著提高体重增加和尸体产量.
- 食缩剂的补充似乎更有利于改善体产量和肉色,而不是单独使用草干草.
- 年龄是影响尸体重量和肉质的重要因素,年龄较大的母羊在某些指标上表现出优势.
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