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鸟类48只肉的生长表现,行为,基因表达,尸体特征,压力指标和经济参数在三个不同的养殖密度下养育的肉

Shimaa A Sakr¹, Ahmed F Abouelnaga², Ahmed I Ateya¹

¹Department of Animal Wealth Development, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt.

Frontiers in veterinary science

|April 25, 2025

概括

对于肉来说,较低的养殖密度可以改善生长,效率和福利. 高种群密度会对鸟类健康,体质量和利能力产生负面影响.

科学领域:

动物科学动物科学
禽畜科学禽畜科学禽畜科学
农业科学农业科学

背景情况:

养殖密度是影响肉福利和表现的关键环境因素.
了解不同种群密度的影响对于优化家禽生产系统至关重要.

研究的目的:

评估低密度 (14只鸟/米2),中密度 (18只鸟/米2),高密度 (22只鸟/米2) 对肉生长,尸体特征,血液学,福利,经济学和免疫标志物的影响.
为了确定肉生产的最佳养殖密度,而不会影响鸟类的健康和生产力.

主要方法:

324只禽类48只肉被随机分配到三个种群密度组:低 (LSD),中等 (MSD) 和高 (HSD).
评估的参数包括生长表现,尸体特征,血液学概况,氧化应激标志物 (皮质醇),与生长和炎症相关的基因表达,经济回报和行为指标 (开放场测试).

主要成果:

高种群密度 (HSD) 显著降低了体重增加和尸体质量.
低种群密度 (LSD) 的鸟类显示提高了生产效率 (EPEF,EBI),改善了生长和肠道健康基因表达,并减少了炎症标志物.
高血压症的鸟类表现出高血压指标 (HB,红细胞,异质细胞,淋巴细胞) 和皮质醇水平,净利较低,行为发生改变.

结论:

在低到中等种群密度 (高达18只/m2) 养殖肉可以在不影响绩效的情况下实施.
高种群密度损害肉的健康,福利和经济可行性,需要调整家禽养殖场管理实践.

关键词:

行为行为行为行为.brojler 肉肉是一个遗传学遗传学遗传学是一个增长表现成绩增长的表现.肉质肉质肉质肉质种群密度种群密度种群密度压力就是压力,压力就是压力.

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