在热应激条件下,三个子系的生长性能,尸体和肉质特征在热应激条件下
Emanuele Pontalti1, Zsolt Matics2, Marco Cullere1
1Department of Animal Medicine, Production and Health, University of Padova, Viale dell'Università 16, 35020 Legnaro, Padova, Italy.
Animals : an open access journal from MDPI
|November 13, 2025
概括
子基因型对热应激 (HS) 的适应性有所不同. 在热压下,Pannon Large (PL) 系列表现出优异的生长和肉质,为未来的肉类需求提供了可持续的解决方案.
科学领域:
- 动物科学动物科学
- 遗传学 遗传学 是一个
- 环境生理学环境生理学
背景情况:
- 全球气温上升和热浪给畜牧业带来了重大挑战.
- 子对热应激 (HS) 非常敏感,但对HS的遗传反应的研究是有限的.
- 了解子对HS的基因型反应对于满足未来的肉类需求至关重要,特别是在发展中国家.
研究的目的:
- 研究慢性热应激对生长性能,屠宰特征和肉质的影响.
- 为了比较三个匈牙利子基因型 (Pannon Large-PL,Pannon White-PW,Pannon Ka-PK) 对环境温度升高的弹性.
主要方法:
- 360只三种基因型的子从5周到11周年龄在两个温度条件下 (控制-20°C;高-28°C) 住宿.
- 评估生长性能 (体重增加,料转换率),屠宰特征 (尸体重量,产量) 和肉质 (含水能力,脂质含量,脂肪酸概况).
主要成果:
- 潘农大型 (PL) 子表现出卓越的表现,有更高的尸体重量和产量,以及在热应激下更好的肉质保持能力.
- 潘农白 (PW) 子的体重增加减少最为显著,而潘农卡 (PK) 子的脂肪含量减少最为显著,多不和脂肪酸增加,导致脂质氧化较高.
- 在慢性热应激下,PL子表现出最佳的生产效率和令人满意的肉质量,这表明与PW和PK基因型相比,它们的弹性更强.
结论:
- 子基因型显著影响热应激反应,影响性能和肉质.
- 潘农大 (PL) 基因型显示出有希望的适应热应激的适应性,这表明它在具有挑战性的环境中具有可持续肉类生产的潜力.
- 选择标准和遗传背景是不同子系中耐热应激能力的关键决定因素.
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