Menegon Francesca, Scollo Annalisa, Trestini Samuele, Urbani Rachele, Ru Giuseppe, Di Martino Guido
Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell'Università 10, 35020 Padova, Italy.
Department of Veterinary Sciences, University of Torino, Grugliasco, 10095 Torino, Italy.
Animals (Basel). 2025 Apr 29;15(9):1250. doi: 10.3390/ani15091250.
The European Commission's ban on routine tail docking has prompted this retrospective observational study to evaluate the short-term effects of transitioning to a fully undocked system. Twenty-two farms were assessed during three subsequent phases: total tail docking (step 1), subgroups of undocked pigs (step 2), and fully undocked pigs (step 3). Farmers received training in long-tail management and independently implemented it on their own farms. However, straw provision as environmental enrichment was mandatory, at least supplied during periods of pigs' restlessness. Overall, going through step 2 appears to be successful. However, transitioning to step 3 worsened mortality ( = 0.010) and the feed conversion ratio ( = 0.015) in weaners. Compared to step 1, the cost of producing 1 kg of meat in step 3 was 33.9% greater during weaning and 7.4% during fattening. Tail lesion prevalence at slaughter was greater in step 3 (41%), followed by step 2 (10%) and step 1 (1%). The hypothetical labour required to optimize straw management compared to the adopted system, ensuring its continuous availability, was estimated as 35 min/100 piglets/weaning cycle (EUR 4.37) and 10.5 h/100 pigs/fattening cycle (EUR 109). Under the conditions of this study, transitioning to a fully undocked system was not successful. Mandating only the non-continuous use of straw has proven insufficient, and greater efforts must be systematically implemented.
欧盟委员会对常规断尾的禁令促使开展了这项回顾性观察研究,以评估向完全不进行断尾系统转变的短期影响。在随后的三个阶段对22个农场进行了评估:全部断尾(步骤1)、部分猪不进行断尾的亚组(步骤2)以及完全不进行断尾的猪(步骤3)。农场主接受了长尾管理培训,并在自己的农场独立实施。然而,作为环境富集措施,提供稻草是强制性的,至少在猪躁动不安期间提供。总体而言,经历步骤2似乎是成功的。然而,向步骤3转变使断奶仔猪的死亡率(P = 0.010)和饲料转化率(P = 0.015)恶化。与步骤1相比,步骤3中每生产1千克肉的成本在断奶期间高出33.9%,在育肥期间高出7.4%。屠宰时尾巴损伤的发生率在步骤3中更高(41%),其次是步骤2(10%)和步骤1(1%)。与所采用的系统相比,为确保稻草持续可用而优化稻草管理所需的假设劳动力估计为每100头仔猪断奶周期35分钟(4.37欧元)和每100头猪育肥周期10.5小时(109欧元)。在本研究条件下,向完全不进行断尾系统的转变并不成功。事实证明,仅强制非连续使用稻草是不够的,必须系统地加大力度。