植物提取物食补充剂对在两个种群密度下养的 brojler 肉类的生长性能和肉质量的影响
Mohammad D Obeidat1, Muhy Eddin M Alkhateeb2, Khaleel I Jawasreh2
1Department of Animal Production, Faculty of Agriculture, Jordan University of Science and Technology (JUST), Irbid, 22110, Jordan. mdobeidat@just.edu.jo.
Scientific reports
|August 11, 2024
概括
精油可以在高种群密度下提高肉的性能. 补充剂减轻了高密度对生长,尸体质量和生理指标的负面影响.
科学领域:
- 动物科学动物科学
- 禽类的营养 养
- 动物生理学 动物生理学
背景情况:
- 肉生产中的高种群密度会引发压力,对鸟类的健康,生长和肉质产生负面影响.
- 精油 (EO) 正在探索其减轻压力和提高肉表现的潜力.
研究的目的:
- 研究两种种养殖密度 (9和14只/m2) 和精油补充剂对肉生长,尸体特征,肉质和生理标记的影响.
- 评估精油对胰岛素类生长因子-1 (IGF-1) 和肌肉调节基因表达在不同种群密度下的影响.
主要方法:
- 罗斯308肉 (n=784) 被分配到四组:正常养殖 (NSD,9只鸟/m2) 没有EO,高养殖 (HSD,14只鸟/m2) 没有EO,NSD与EO,和HSD与EO.
- 鸟类被养了35天,每周对体重和料摄入量进行监测. 分析了尸体特征,肉质,血清生物化学指标和基因表达 (IGF-1,MyoG,MSTN,mTOR,AST).
主要成果:
- 高种群密度 (HSD) 减少了料摄入量和体重增加,并对肉质产生了负面影响 (较低的WHC,华纳-布拉茨勒剪切力).
- 在HSD组中补充精油改善了料转换率 (FCR) 和增加了脂肪的百分比.
- 欧补充剂增加了mTOR和AST水平,而HSD降低了IGF-1和肌原蛋白表达,并增加了MSTN表达.
结论:
- 补充精油可以有效地减轻高种群密度对 brojler 性能和生理状况的不利影响.
- 在密集型养殖系统中,EO显示出提高 brojler 性和生产率的潜力.
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