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Effect of extirpation of Guinea pig (Cavia porcellus) penile spicules on carcass yield compared to chemical castration with 2% iodized alcohol

Abstract:

The aim of this study was to determine and compare the effect of the removal of the spicules of the penis of Guinea pig and chemical castration on weight after 12-hour fast pre slaughter and carcass yield. 72 Guinea pigs Type I between 35- 45 days of age were used, the same that were distributed in three treatments, T1 whole animals without castration, T2 animals removed spicules glans and T3 chemically castrated animals with iodized alcohol 2% intratesticular; removal and castration was performed in the fifth week of age. Live weight loss by fasting 12 hours pre slaughter, carcass yield relative to live weight at the end of the production process and post-fasting through design covariance initial weight was evaluated. The weight lost by fasting for 12 hours before slaughter showed no significant difference (P≥0.05) between treatments being lower for T2 (108.62 g.); the carcass performance relative to body weight before and after fasting shows significant differences (P<0.05) in favor of T2 (70.82% and 76.23%). This is concluded that the removal of the spicules of the penis in Guinea pigs improves performance at the carcass.