在子饮食中不同形式的乳补充剂对压力诱导的生理反应的影响
Hana Dočkalová1, Daria Baholet Bátik1, Pavel Horký1
1Department of Animal Nutrition and Forage Production, Faculty of AgriSciences, Mendel University in Brno, 61300 Brno, Czech Republic.
牛补充剂,特别是发酵的,改善了子的生长和应激弹性. 这些料添加剂提高了料的利用率和生产性能,为可持续的子养殖做出了贡献.
科学领域:
- 动物科学动物科学
- 营养科学 营养科学
- 环境生理学环境生理学
背景情况:
- 环境压力因素,如热量和噪音,对子的健康和生产力产生负面影响.
- 需要饮食策略来减轻这些不良影响并改善动物福利.
- 乳种子蛋糕是畜牧业生产的潜在料添加剂.
研究的目的:
- 评估乳种子蛋糕 (SMT) 和发酵乳种子蛋糕 (FMT) 在减轻子的热和噪音压力的有效性.
- 评估这些饮食干预措施对生理反应,生产绩效和整体福利的影响.
- 确定乳作为养子中的可持续料添加剂的潜力.
主要方法:
- 90只HYLA杂交子受到热和噪音压力.
- 三个饮食组进行了比较:对照组 (C),乳种子蛋糕 (SMT) 和发酵乳种子蛋糕 (FMT).
- 通过临床观察和生物化学分析 (酶,脂质/蛋白质代谢,抗氧化剂状态) 来监测健康状况.
主要成果:
- 热应激对平均日益,料摄入量和尸体产量产生了负面影响.
- FMT饮食导致较低的料摄入量和最好的料转换比率在后来的生长阶段,但较低的屠宰重量.
- SMT饮食导致了最高的屠宰重量和更高的生长效率.
- 生物化学标志物表明,通过饮食干预来调节对压力的生理反应.
结论:
- 乳种子蛋糕,特别是在发酵时,可以提高子在压力下的料利用率和生长性能.
- 饮食补充牛丁的饮食补充显示了提高应激弹性和促进以福利为导向的子生产的潜力.
- 这些发现支持使用乳作为可持续子养殖系统的功能性料添加剂.
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