早期的生活经历是否会影响断奶猪耳朵缩的发展?
L Markland1, K O'Driscoll2, F C Leonard3
1Pig and Poultry Research and Knowledge Transfer Department, Teagasc Moorepark, Fermoy, Ireland; School of Veterinary Medicine, University College Dublin, Dublin, Ireland.
Animal : an international journal of animal bioscience
|October 30, 2025
概括
在断奶前频繁处理小猪会增加轻度耳,但断奶攻击性不会导致耳. 需要进一步的研究来了解影响猪耳健康的复杂因素.
科学领域:
- 动物科学动物科学
- 兽医医学 兽医医学 兽医医学
- 动物福利 动物福利
背景情况:
- 耳是断奶猪的重大福利问题,原因和风险因素不明.
- 处理和混合等管理实践被怀疑是导致耳朵亡的因素.
- 了解这些因素对于改善猪福利和减少经济损失至关重要.
研究的目的:
- 调查频繁的断奶前处理和断奶后混合对猪耳朵瘤发展的影响.
- 评估早期生活压力,耳部痕和耳部瘤发生率之间的关系.
- 评估这些管理实践对小猪生长和整体福利的影响.
主要方法:
- 37个子被随机分配到控制组或被处理的组,被处理的小猪在断奶前经历了额外的处理会议.
- 在断奶时,猪被安置在不混合 (子组) 或混合 (多子) 中.
- 测量包括断奶前腹得分,便皮质醇水平,断奶后耳朵痕,耳朵缩得分和断奶后43天的生长性能.
主要成果:
- 处理增加了断奶前腹得分和断奶后轻度耳朵瘤的流行.
- 混合猪表现出更多的耳部痕,但不混合群体的耳部瘤患病率更高.
- 胎时的耳部痕与随后的耳部亡没有相关性,并且无论是处理还是混合都不会影响整体生长,尽管耳部亡的猪的平均每日增长减少了.
结论:
- 奶时的侵略性引起的耳朵痕似乎不是耳朵瘤的主要原因.
- 断奶前处理有助于轻微的耳部,表明早期的生活压力是一个因素.
- 中度至重度耳消亡的发展可能涉及多种复杂的因素,这些因素超出了本研究的范围.
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