在Jersey奶牛中,通过超声波评估的身体状况评分和腹部脂肪之间的关联
Pedro Melendez1, Daniela Redrovan2, Prasanth K Chelikani2
1Jockey Club College of Veterinary Medicine & Life Sciences, City University of Hong Kong, Hong Kong, SAR, China.
Veterinary medicine and science
|August 29, 2024
概括
泽西牛的身体状况评分 (BCS) 显示了与腹部脂肪的低至中等联系. 超声波显示,高BCS和低BCS的奶牛之间的脂肪沉积有显著差异,突出了不同的脂肪积累模式.
科学领域:
- 动物科学动物科学
- 兽医医学 兽医医学 兽医医学
- 类动物营养 类动物营养
背景情况:
- 身体状况评分 (BCS) 是一种广泛使用的,但主观的牛肥胖指标.
- 皮下脂肪沉积,通过BCS评估,可能不会准确地反映腹部脂肪积累.
研究的目的:
- 用超声波来定量评估泽西牛的腹部脂肪储存.
- 为了确定BCS和各种腹部脂肪储存 (总体,逆,,介质) 之间的关联.
主要方法:
- 21只非怀孕,非哺乳期的泽西奶牛通过超声波评估腹部脂肪.
- 身体状况评分 (BCS) 是由一个评价者在1-5级别上进行评估的.
- 多变量回归模型分析了BCS和超声波测量脂肪储存之间的关系.
主要成果:
- BCS显示了与腹部脂肪储存的低至中等相关性 (r2范围从0.023的介质脂肪到0.369的总腹部脂肪).
- 与较低BCS (≤3.25) 牛相比,具有较高BCS (≥3.5) 的牛的腹部脂肪量显著增加.
- 嘴部和全腹部脂肪与BCS的正相关性比中腹部和腹部脂肪更强.
结论:
- BCS提供了有限但有用的估计Jersey奶牛的腹部脂肪.
- 在BCS类别内,脂肪沉积存在显著的变化,这表明脂肪积累模式不同.
- 腹部和皮下脂肪代谢可能有所不同,这表明单独的BCS不足以准确评估脂肪.
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