Resumen de The “Criollo Negro de la Costa Ecuatoriana” pigs: effect of sex and rearing system on performance, carcass and meat traits

Martín A. González, Franklin R. Peláez, Andrés Luis Martínez Marín, Carmen Avilés Ramírez, Francisco Peña

• español

  A total of 32 Creole pigs were used to evaluate the effect of rearing system and sex on carcass and meat traits. 8 males and 8 females were reared in a semi-confinement system (SC), and a second group (8 males and 8 females) was reared indoors (C). The C pigs showed a better growing rate (0.3 kg/d vs. 0.22 kg/d) and final live weight, as well as higher morphometric parameters, and superior weights for the most valuable meat cuts to those of SC pigs, while showed a lower hot and cold carcass yields. The loin and sirloin percentages from C pigs were lower and higher compared with those SC pigs, respectively. Carcass of C pigs showed higher percentage of fat and lower percentage of lean and bone that SC pigs. The rearing system did not affect the meat quality traits and mineral composition. Meat from C pigs showed lower scores for color, brightness, and unctuousness, and higher for metallist taste, juiciness and persistence of flavor than SC pigs. Few sensory attributes of cooking chops were affected by gender. Metallist taste was higher in males, while brightness and lard flavor were higher in females.

• English

  The objective of this study was to evaluate the effect of rearing system (confinement, C vs semi-confinement, SC) and sex (barrows vs females) on growth performance, carcass traits and meat quality of “Criollo negro de la costa ecuatoriana” pigs. A total of 32 pigs, 16 barrows and 16 gilts were used. The average daily gain (0.30 kg/day vs 0.22 kg/day), slaughter weight (51.4 kg vs 43.1 kg), morphometric parameters and weights for the most valuable meat cuts were higher in C pigs than in SC pigs, whereas hot and cold carcass yields were higher in SC pigs than in C pigs. The loin and sirloin percentages from C pigs were lower and higher compared with those SC pigs, respectively. Carcass of C pigs showed higher percentage of fat and lower percentage of lean and bone that SC pigs. The rearing system had scarce effects on meat quality traits and mineral composition. Meat from C pigs showed lower scores for color, brightness, and unctuousness, and higher for metallist taste, juiciness and persistence of flavor than SC pigs. Few sensory attributes of cooking chops were affected by sex. Metallist taste was higher in barrows, while brightness and lard flavor were higher in females. It can be concluded that the rearing system had a significant effect on most of the productive and carcass traits, whereas its effect was limited on the meat traits. Sex had little influence on most of the traits studied.