选择白色油脂用于制造一种蛋白质封装的脂肪混合源,用于新生小牛的新生小牛
David P Casper1, Mark F Scott2
1Casper's Calf Ranch LLC, Freeport, IL 61032; Department of Animal Sciences, North Carolina A & T State University, Greensboro, NC 27411.
Journal of dairy science
|December 11, 2024
概括
选择的白脂 (CWG) 与蛋白质封装脂肪 (PEF) 混合物为小牛奶替代品 (MR) 提供了具有成本效益的替代品. 这项研究发现,CWG PEF支持与传统混合物相比较的小牛生长性能和健康.
科学领域:
- 动物科学动物科学
- 乳制品营养 乳制品营养
- 料制造业 制造业 料制造业 制造业
背景情况:
- 蛋白质封装脂肪 (PEF) 混合物对于制造均的小牛奶替代品 (MR) 至关重要.
- 改善MR中的脂肪可混合性和可溶性是新生儿小牛持续提供营养的关键.
- 开发了一种使用选择性白色油脂 (CWG) 的新型PEF混合物,作为一种潜在的经济有效的替代品.
研究的目的:
- 为了评估基于CWG的PEF混合物的有效性,与在小牛MR中的标准动物油脂 (ALT) PEF混合物相比.
- 评估CWG PEF对Holstein小牛的生长性能 (ADG,DMI,料效率) 和健康的影响.
- 确定CWG PEF是否可以保持性能,同时可能降低制造成本.
主要方法:
- 40只荷尔斯坦公牛 (2-5天大) 被分配到两个治疗组 (n=20) 使用随机的完整块设计.
- 在56天的时间里,小牛被用CWG PEF或ALT PEF制造的实验MR养,同时养小牛和水.
- 测量了增长性能指标,包括体重增加,平均每日增加 (ADG),干物质摄入量 (DMI) 和料转化.
主要成果:
- 在CWG和ALT PEF组之间,在体重增加,ADG,小牛初始DMI,总DMI或料转换方面没有观察到显著差异 (P>0.10).
- 与ALT PEF养的小牛相比,养CWG PEF的小牛表现出类似的生长性能和料效率.
- 治疗组之间没有检测到框架增益或便得分的显著差异,这表明健康结果相似.
结论:
- 可选的白脂可以有效地用于制造PEF混合物,用于小牛MR.
- 在新生Holstein小牛中,CWG PEF支持与传统ALT PEF混合物相比较的生长性能和健康.
- 使用CWG PEF为MR生产提供了一个潜在的更经济的选择,而不会影响小牛的发育.
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