RESULTS RELATED TO THE MEAT PRODUCTION OF "ROSS-308" CHICKEN BROILERS, REARED IN FAMILIAL-TYPE FARMS
R. Bălău, I. Vacaru-Opriş
Abstract
The compulsory characteristic of certain E.U. measures, related to poultry welfare, imposed to run some researches on the quantitative and qualitative aspects of poultry meat in alternative-familial technological systems. The biological material comprised 3000 ROSS-308 chickens, equally divided in 2 groups: Control group-LC (natural micro-climate, access to paddock, conventional feeders and water devices); Experimental group-LE (artificial micro-climate, closed hall, automated equipments). Studied parameters: slaughtering efficiency, meat/bones ratio, meat chemical composition. Chickens have been slaughtered at 42 days old, the efficiency-dressed weight reaching 70.84% (LC)-74.09% (LE). Boned breast participated in carcass structure with 34.73% (LC)-36.80% (LE); thighs and shanks participated with 28.28% (LC)-30.73% (LE) proportions in carcass; meat/bones ratio was calculated at 3.99:1 (LC)-4.23:1 (LE) values. The chemical investigations for breast fillet revealed proteins content between 23.11% (LC) and 23.79% (LE), while lipids oscillated from 0.75% till 0.98% (LE-LC); for rear limbs samples, was found a proteins content of 18.94%-19.33% (LC-LE), respectively lipids concentration of 8.15%-8.82 % (LE-LC). Although freedom of movement negatively influenced meat yield, its dietetic value was better in these fowl reared within the familial system, due to inner poorer lipids content.
