RESEARCHES CONCERNING THE SLAUGHTERING EFFICIENCY AND THE CUT PARTS PROPORTION IN THE CARCASSES OF THE CHICKEN BROILERS REARED WITHIN INTENSIVE SYSTEM
R.M. Radu-Rusu, I. Vacaru-Opris, M.G. Usturoi
The researches focused on some aspects concerning meat yield in chicken broilers reared within the intensive system. The biological material comprised 120 broilers, belonging to "COBB-500" (30♀ and 30♂) and "ROSS-308" (30♀ and 30♂), slaughtered at 42 days old. The slaughtering efficiency was calculated using the gravimetric data achieved at slaughter moment and at 24 hours post slaughter. Through the rationing between trenched parts weights and carcasses weight, the proportion of these commercial products in carcass structure was calculated. In "COBB-500" broilers, the average achieved values, for both genders, are listed below: 78.94% (fresh) and 77.76% (post refrigeration); participation of trenched parts in whole carcass: 29.66% (breast with bone and skin), 8.98% (wings), 15.71% (thighs), 13.33% (shanks) and 32.33% (carcass remnants). At the ROSS-308 chickens (males and females), there have been calculated the average values listed below: 79.56% (fresh carcasses) and 78.40% (refrigerated carcasses); participation of trenched parts in carcass: 29.20% (breast with skin and bone), 9.11% (wings); 16.31% (thighs); 13.32% (shanks) and 31.4% (carcass remnants). For both studied genotypes, the slaughtering efficiency was found within the range specified by the hybrids producers (77-80%) while the breast participation in carcass structure reached very good values.