Essay On Pig Castration

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Position Statement on Pig Castration
Maria Belu

Background:
Castration of pigs has been a long standing practice in the U.S and has recently come under scrutiny as welfare issues have become more important. Castration of male piglets has been done to deal with a phenomenon known as “boar taint”. When male pigs reach puberty, they secrete a pheromone known as Androstenon, and an intestinal product, Skatole, both which give the meat an offensive odor many consumers find intolerable (AVMA, 2013). Castration alleviates this problem but since it is commonly done without analgesia or anesthetic, it causes acute and prolonged pain and stress (Carrol et al, 2006). Below I briefly discuss several scientific papers that discuss the advantages and disadvantages of physical castration, current possible alternatives, and my recommendations. My recommendations are not only based on what can be practically carried out by the swine industry but provides the best welfare for the pigs. Good welfare can be defined as minimizing pain, decreasing stress, and increasing productivity which is a sign of good health.

The welfare of swine castration:
The main disadvantage and welfare concern of castration is pain and stress. Pain felt by the piglet during castration was investigated and reviewed by Carrol el al. (2006) who confirmed what researchers Prunier et al., (2005) had previously investigated, which, was that castration causes physiologic and behavioral signs pain and stress. The markers for these were increased cortisol, lactate, and heart rate. Piglets showed pain-specific behaviors after castration including vocalization, trembling and spams. Castrated piglets spent more time at the teat which is known to help animals cope with stress (Moya...

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...th performance, body composition, behaviour and acute phase proteins. Livestock Sci. 132(1-3):53-59.

Guay, G., Salgado, G., Thompson, B., Davis, A., Sapkota, A., Chaya, W., McGlone, J.J. 2013. Behavior and handling of physically- and immunologically-castrated market pigs on farm and going to market. J. Anim. Sci. jas. 2012-5726

Llamas, S.M., Boyle, L.A., Lynch, P.B., and Arkins, S. 2008. Effect of surgical castration on the behavioural and acute phase responses of 5-day-old piglets. Applied Animal Behavior Science. 133-145.

Prunier, A., A. M. Mounier, and M. Hay. 2005. Effects of castration, tooth resection, or tail docking on plasma metabolites and stress hormones in young pigs. J. Anim. Sci. 83:216–222

Thun, R., Gajewski, F., Janett, F. Castration in male pigs: Techniques and animal welfare issues. 2006. Journal of Physiology and Pharmacology. Supp 8, 189-194.

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