Application of extended feed withdrawal time preslaughter and its effects on animal welfare and carcass and meat quality of enriched-housed pigs
Faucitano, L., Conte, S., Pomar, C., Paiano, D., Duan, Y., Zhang, P., Drouin, G., Rina, S., Guay, F., Devillers, N. (2020). Application of extended feed withdrawal time preslaughter and its effects on animal welfare and carcass and meat quality of enriched-housed pigs. Meat Science, [online] 167 http://dx.doi.org/10.1016/j.meatsci.2020.108163
Plain language summary
Enriching the housing environment results in heavier and fatter pigs.
Enriched-housed pigs are easier to handle and produce less exudative pork.
Extending fasting time (from 16 to 32 h) does not result in better meat quality in this type of pigs.
A total of 144 barrows were distributed into four treatment groups. One group was housed conventionally and fasted for 16 h preslaughter, while the other three groups were housed in enriched conditions (straw-bedding and low density) and fasted for 16, 24 and 32 h preslaughter. When compared with conventionally-housed pigs, enriched-housed pigs were heavier (P < .05) and fatter (P < .01), but easier to handle at loading (P < .05) and produced less exudative pork (P < .05) possibly resulting from a lower post-mortem muscle glycolytic potential (P = .10). Extending fasting time up to 32 h reduced dressing yield (P < .001) and increased skin lesion scores (P < .01), but did not result in any clear or major effect on muscle metabolism and meat quality. In conclusion, given the beneficial effects of enriched housing conditions on stress response and pork quality, the application of an extended fasting time (32h) preslaughter is not required for this production.