环境的复杂性会影响肉的焦虑,这取决于遗传菌株和体重
Alexandra Ulans1, George C Brooks2, Leonie Jacobs3
1School of Animal Sciences, Virginia Tech, Blacksburg, VA, 24061, USA.
Scientific reports
|July 30, 2024
概括
环境的复杂性影响肉的焦虑. 缓慢生长的比快速生长的表现出较少的焦虑,特别是在复杂的环境中,因为它们体重增加.
科学领域:
- 动物福利科学 动物福利科学
- 伦理学 伦理学 伦理学
- 鸟类科学 鸟类科学
背景情况:
- 环境的复杂性是动物福利的一个关键因素.
- 肉的生长速度在各个品种之间有很大差异,可能会影响它们的情感状态.
- 了解家禽的焦虑指标对于改善养殖实践至关重要.
研究的目的:
- 研究环境复杂性对快速和缓慢生长的肉焦虑程度的影响.
- 为了确定体重增加如何影响不同种类和环境中的焦虑.
- 为了比较快速生长的 (Ross 708) 和缓慢生长的 (Hubbard Redbro Mini) 肉的情感状态.
主要方法:
- 在简单的 (SE) 或复杂的 (CE) 环境中,对600只快速生长和600只缓慢生长的肉进行了比较研究.
- 行为观察包括食比例,警,以及作为焦虑指标的食物和步骤的延迟.
- 在不同年龄段进行的注意力偏差测试,将行为指标与体重相关联.
主要成果:
- 与快速生长的肉相比,增长缓慢的肉表现出较少的焦虑,吃得更多,表现出较少的警,并且步骤延迟较短.
- 在复杂的环境中,随着体重的增加,食的可能性会降低,而不是在简单的环境中.
- 警水平随着身体体重的增加而增加,无论是菌株还是环境.
结论:
- 肉的情绪状态,特别是焦虑,是动态的,随着鸟类的体重增加,受遗传菌株和环境复杂性的影响.
- 慢生长的肉品种表现出与快速生长的品种相比,内在的焦虑水平较低.
- 环境丰富可以调节焦虑,但其与体重的相互作用需要考虑,以获得最佳的肉福利.
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