经典音乐对不同种群密度的 brojlers 的生长性能,压力水平,抗氧化剂指数,免疫功能和肉质的影响
Xinlei Gao1, Jiangang Gong2, Bowen Yang1
1College of Animal Science and Technology, Hebei Agricultural University, Baoding, China.
Frontiers in veterinary science
|August 21, 2023
概括
高种群密度会对肉的健康和生长产生负面影响. 古典音乐部分减轻了这些不良影响,改善了生长性能,并减少了 brojlers 的压力指标.
科学领域:
- 动物科学动物科学
- 禽畜科学 禽畜科学 禽畜科学
- 压力生理学 压力生理学
背景情况:
- 在肉养殖中,高种群密度与氧化应激和炎症的增加有关.
- 音乐疗法作为一种减轻动物压力的方法被探索,但在高密度下对 brojlers 的有效性尚未得到充分证实.
研究的目的:
- 研究古典音乐在不同种群密度下对肉生长,压力,免疫力和肉质量的影响.
- 确定古典音乐能否减轻高种群密度对 brojlers 的负面影响.
主要方法:
- 一个2x3的因数实验,540只肉暴露在两个养环境 (有/没有古典音乐) 和三个种群密度 (15.5,17.9,20.3鸟/m2) 中.
- 评估的生长性能 (料摄入量,ADG,F/G),压力激素 (CORT,ACTH),免疫指数 (脏/囊指数,IgA,IgG,IgM),抗氧化剂状态 (MDA,CAT,SOD,GSH-PX) 和肉质 (损耗,L*,a*值).
主要成果:
- 增加种群密度降低了生长性能,增加了压力激素,降低了免疫功能,并对抗氧化剂状况和肉质产生了负面影响.
- 古典音乐暴露改善了平均每日增益 (ADG),降低了给增益比 (F/G),并降低了血清皮质类固醇 (CORT), adrenocorticotropic 激素 (ACTH) 和葡萄糖 (GLU) 水平.
- 音乐治疗还增强了Fabricius指数,血清免疫球蛋白A (IgA) 和免疫球蛋白G (IgG) 的囊,以及胸部的a*值.
结论:
- 高种群密度 (20.3只/m2) 严重影响肉的生长和健康.
- 古典音乐的干预可以部分缓解与高密度肉养殖相关的有害影响.
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