断尾和未断尾猪在断奶期的福利评估

IF 1.9 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Aloma Zoratti , Isabella Pividori , Mirco Corazzin , Gianluca Chiarelli , Luigi Faucitano , Anna Zuliani , Edi Piasentier
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引用次数: 0

摘要

尾巴完整性是欧洲养猪业的一个关键福利目标。本研究按照国家动物福利和福利质量参考中心®标准,评估了商业农场断奶猪(28-84日龄)断尾(D)和未断尾(UD)的福利状况。对分布在16个猪圈的295头猪进行了猪鬃样本中皮质醇(CORT)和硫酸脱氢表雄酮(DHEA(S))的动物测量和激素定量分析。猪由24头同质母猪出生,分布在连续四个周批次,并按性别平衡。与D猪相比,UD猪在尾部(P = 0.02)和身体(P <;0.01),咬尾事件在断奶后的中期达到峰值。身体损伤随着时间的推移而增加,特别是在UD猪中,这与饲养密度的增加有关。D型猪更频繁地表现出直尾姿态(P <;0.01),表明更积极的情绪状态。无论尾部条件如何,随着新颖性的降低,环境富集的使用随着时间的推移而下降(P = 0.03)。激素分析揭示了恢复力的性别差异,与阉割的男性相比,女性的CORT和CORT/DHEA(S)比值较高,DHEA(S)水平较低(P <;0.01)。与D组相比,D组的CORT/DHEA(S)比值有更高的趋势(P = 0.06),表明下丘脑-垂体-肾上腺轴的激活程度更高,以恢复体内平衡状态。多变量分析将身体病变、压力标记和负面互动联系起来,突出了福利的多因素性质。尾巴完整性本身作为福利指标可能具有误导性。综合身体、情感和生理因素的全面评估对于改善商业农场对UD猪的管理策略至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of welfare in pigs with docked and undocked tails during the weaner stage
Tail integrity is a key welfare target in European pig farming. This study evaluated the welfare condition of weaner (28–84 days old) pigs with docked (D) and undocked (UD) tails on a commercial farm, following National Reference Center for Animal Welfare and WelfareQuality® standards. Animal-Based Measures and the hormonal quantification of cortisol (CORT) and dehydroepiandrosterone sulfate (DHEA(S)) in bristle samples were assessed in 295 pigs distributed in 16 pens. Pigs were born from 24 homogenous sows, distributed across four consecutive weekly batches, and were balanced by sex. Compared with D pigs, UD pigs presented more injuries in the tail (P = 0.02) and on the body (P < 0.01), with tail biting occurrences peaking halfway through the post-weaning phase. Body injuries increased over time, particularly in UD pigs, correlating with rising stocking density. D pigs displayed a straight tail posture more frequently (P < 0.01), suggesting a more positive emotional state. Regardless of tail condition, the use of environmental enrichments declined over time (P = 0.03) as novelty diminished. Hormonal analysis revealed sex-related differences in resilience, with females showing higher CORT and CORT/DHEA(S) ratio and lower DHEA(S) levels than castrated males (P < 0.01). There was a tendency toward higher CORT/DHEA(S) ratio in UD pigs than D ones (P = 0.06), indicating a greater activation of the hypothalamic-pituitary-adrenal axis to restore homeostatic conditions. Multivariate analysis linked body lesions, stress markers, and negative interactions, highlighting welfare’s multifactorial nature. Tail integrity alone may be misleading as a welfare indicator. A holistic assessment, integrating physical, emotional, and physiological factors, is crucial for improving management strategies for UD pigs on commercial farms.
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来源期刊
Livestock Science
Livestock Science 农林科学-奶制品与动物科学
CiteScore
4.30
自引率
5.60%
发文量
237
审稿时长
3 months
期刊介绍: Livestock Science promotes the sound development of the livestock sector by publishing original, peer-reviewed research and review articles covering all aspects of this broad field. The journal welcomes submissions on the avant-garde areas of animal genetics, breeding, growth, reproduction, nutrition, physiology, and behaviour in addition to genetic resources, welfare, ethics, health, management and production systems. The high-quality content of this journal reflects the truly international nature of this broad area of research.
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