R.M. Radu-Rusu


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

Abstract
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.

Key words: chicken broiler, intensive system, carcass, slaughtering efficiency, trenched parts

CERCETARI PRIVIND RANDAMENTUL LA SACRIFICARE SI PROPORTIA PORTIUNILOR TRANSATE ÎN CARCASELE PUILOR BROILER DE GAINA CRESCUTI ÎN SISTEM INTENSIV

R.M. Radu-Rusu, I. Vacaru-Opris, M.G. Usturoi

Rezumat
Cercetarile au urmarit unele aspecte privind productia cantitativa de carne la puii broiler de gaina crescuti în sistem intensiv. Materialul biologic a constat în 120 pui broiler, apartinând hibrizilor „COBB-500” (30♀ si 30♂) si „ROSS-308” (30♀ si 30♂), sacrificati la vârsta de 42 zile. Pe baza datelor gravimetrice obtinute la sacrificare si dupa 24h de refrigerare a carcaselor, s-a calculat randamentul la sacrificare. De asemenea, prin raportarea greutatilor partilor transate la greutatea carcaselor, s-a calculat proportia acestor sortimente comerciale de carne în alcatuirea carcasei. La puii COBB-500, s-au obtinut urmatoarele valori medii, pentru ambele sexe: randament la sacrificare: 78,94% (la cald) si 77,76% (dupa refrigerare); participarea portiunilor transate în alcatuirea carcasei: 29,66% (piept cu os si piele), 8,98% (aripi), 15,71% (pulpe superioare), 13,33% (pulpe inferioare) si 32,33% (tacâm). În cazul puilor ROSS-308 (masculi si femele), s-au calculat valorile medii redate în continuare: randamentul la sacrificare: 79,56% (carcase proaspat eviscerate) si 78,40% (carcase refrigerate); proportia de participare a partilor transate în carcasa: 29,20% (piept cu os si piele), 9.11% (aripi); 16.31% (pulpe superioare); 13.32% (copanele) si 31.4% (tacâm). Pentru ambele genotipuri studiate, randamentul la sacrificare s-a încadrat în intervalul specificat de producatorii hibrizilor (77-80%) iar participarea pieptului în carcasa a atins valori foarte bune.

Cuvinte cheie: pui broiler, sistem intensiv, carcasa, randament la sacrificare, portiuni transate