Lesión en la carne y adicción de nutrientes en el ayuno antes del sacrificio de cerdos

Abstract

Objetivo. Se realizaron dos experimentos en un beneficiadero en Brasil, dirigido a la evaluación de las lesiones en la piel de cerdo y la canal en la área de espera del beneficiadero y destinado a evaluar los efectos de glucosa (G), bicarbonato de sodio (SB) y vitamina E (VE) añadida al agua durante el ayuno antes de la masacre en el rendimiento de la canal, de órganos y la calidad de la carne. Materiales y métodos. En primer ensayo incluyó a 1.000 cerdos, observados en la zona de descanso del beneficiadero hasta la entrada en el área del aturdimiento. En el segundo ensayo se utilizaron 500 animales en el último día antes del beneficio, en un diseño experimental incluyendo diez repeticiones. Los tratamientos fueron: agua; 50 g/L G; 50 g/L G + 200 mg/L VE; 75 g/L G; 75 g/L G + 200 mg VE; 0.45% SB; 0.45% SB + 200 mg/L VE; 0.55% SB; 0.55% SB + 200 mg/L VE; 200 mg/L of VE. Resultados. Los rendimiento de la canal y de órganos no se vieron afectados por los tratamientos. La adición de 0.55 % SB + 200 mg VE redujo el pH final de la carne, y de 0.45 % SB reduce el valor de pigmento rojo. Conclusiones. Los principales casos de lesiones en la piel y la canal de cerdos se deben a peleas. La adición de los nutrientes en el agua de bebida no afectó a la carcasa, el rendimiento vísceras y calidad de la carne.

Carcass Lesion Severity and Pre-Slaughter Conditions in Heavy Pigs: A Prospective Study at a Commercial Abattoir in Northern Italy

“…The effects of waiting time before loading and pen space allowance on carcass lesions have already been discussed. This association seems to confirm the hypothesis that longer waiting and wider lairage pens may have caused more fights among the pigs within each batch, as lesions on the neck and head are typically caused by fights and aggressions between pigs [55]. Concerning the effect of the trailer identified in the present study, several authors have already investigated the effects of vehicle design on pig welfare and carcass lesions [1,27,38,65].…”

“…In those pigs, higher transport densities and thus less space allowance per animal were associated with decreased prevalence of low-quality pork. Petrolli et al [55] indicated an association between the presence of larger stalls and a higher prevalence of carcass injuries, suggesting, however, that this is linked to the fact that larger stalls favor the mixing of unfamiliar animals, coming from different pens or farms. The presence of admixture between unfamiliar animals increases the possibility of hierarchical fights among pigs, increasing carcass injuries [1,55].…”

“…Petrolli et al [55] indicated an association between the presence of larger stalls and a higher prevalence of carcass injuries, suggesting, however, that this is linked to the fact that larger stalls favor the mixing of unfamiliar animals, coming from different pens or farms. The presence of admixture between unfamiliar animals increases the possibility of hierarchical fights among pigs, increasing carcass injuries [1,55]. However, in our study, each lairage pen consisted of the same number of pigs (i.e., 23 or 24 pigs per group), and we avoided mixing animals from different batches.…”