För- och nackdelar med elektrisk respektive koldioxidbedövning vid slakt av grisar : effekter på köttkvalitet och djurvälfärd
In today’s society, it is recognized that animals should be well treated and slaughtered in a way that does not cause unnecessary suffering to the animal. In 1937, it was legalized in Sweden that stunning treatment must occur before slaughter. The most effective and most common stunning method on pi...
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| Formato: | M2 |
| Lenguaje: | sueco Inglés |
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SLU/Dept. of Animal Nutrition and Management (until 231231)
2018
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| Sumario: | In today’s society, it is recognized that animals should be well treated and slaughtered in a way that does not cause unnecessary suffering to the animal. In 1937, it was legalized in Sweden that stunning treatment must occur before slaughter. The most effective and most common stunning method on pigs is using carbon dioxide, but it is not unusual with electric stunning. Stunning is used on all animals in Sweden before slaughter to avoid unnecessary discomfort and suffering. It has been found that carbon dioxide stunning can give rise to reluctant behaviour before unconsciousness and that electrical stunning cause more deviations in the meat compared with carbon dioxide stunning. Electrical stunning may occur in several ways, the electrodes can be placed head-back, head-chest or head only. In some studies, the location of the electrodes has not significantly affected the meat quality, but the animal welfare has been positively affected by placement on the head-back or head-chest because the methods are irreversible. Carbon dioxide stunning results in better meat quality than electric stunning, but animal welfare is affected more negatively. Carbon dioxide have been found to stress the pigs more before stunning and after being stunned, a larger proportion of pigs have also been found to regain consciousness and reaction to pain. It is necessary to develop better stunning methods and studies have found that alternative gases such as argon or a combination of carbon dioxide and nitrogen could replace stunning with only carbon dioxide, but more research in the area is required. |
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