Welfare Aspects of Raising Entire Male Pigs and Immunocastrates

Animals

Susanne Zöls¹  Eberhard von Borell²  Volker Stefanski³  Ulrike Weiler³  Mirjam Holinger⁴  Michel Bonneau⁵  Armelle Prunier⁶ 

[1] Clinic for Swine, Ludwig-Maximilians-University Munich, Sonnenstrasse 16, 85764 Oberschleissheim, Germany;Department of Animal Husbandry and Ecology, Martin-Luther-University Halle-Wittenberg, Theodor-Lieser-Str. 11, 06120 Halle, Germany;Department of Behavioural Physiology of Livestock, University of Hohenheim, Schloss Hohenheim 1, 70599 Stuttgart, Germany;Department of Livestock Sciences, Research Institute of Organic Agriculture FiBL, Ackerstrasse 113, 5070 Frick, Switzerland;IFIP, The French Pork and Pig Institute, La Motte au Vicomte, B.P. 35104, 35651 Le Rheu, France;PEGASE, INRAE, Institut Agro, 35590 Saint Gilles, France;

关键词: welfare;    entire males;    immunocastration;    behaviour;    housing;    management;   

DOI  :  10.3390/ani10112140

来源: DOAJ

【 摘 要 】

For a long time, scientists assumed that newborns have a severely limited sense of pain (if any). However, this assumption is wrong and led to a “start of the exit” from piglet surgical castration. Some of the currently discussed or already implemented alternatives such as general or local anaesthesia during surgical castration raise additional welfare concerns as well as legal problems and/or are hardly applicable. The favoured long-term, welfare-friendly “gold standard” is to raise entire male pigs (EM). However, this may also impose certain welfare problems under the current conventional housing and management conditions. The specific types of behaviour displayed by EM such as mounting and aggressive behaviours but also increased exploration, which are partially linked to sexual maturation, increase the risk for injuries. The current status of knowledge (scientific literature and farmer experiences) on housing of EM suggests that environmental enrichment, space, group-stability, social constellation, feeding (diet and feeder space), health and climate control are critical factors to be considered for future housing systems. From an animal welfare point of view, an intermediate variant to be favoured to reduce problematic behaviour could be to slaughter EM before reaching puberty or to immunize boars early on to suppress testicular function. Immunization against endogenous GnRH can reduce EM-specific problems after the 2nd vaccination.

【 授权许可】

Unknown