Using different levels of energy in the diet of chicken slow-growing strain of rustic French Pedrês (Barre Gris Cou Nu)

This study aimed to evaluate the effect of energy levels on growth performance and yield broilers Caipira French Pedrês, slaughtered at 77, 84 90 days old. We used 192 day old chicks, mixed, reared under intensive birds/m2 density 6.4. The experimental design was completely randomized with four replications three treatments, unit being a box 16 birds. Treatments were defined by diets in initial phase (1-28 days) fattening (29 91 were: T1 - 3.000/3.100 kcal / kg, T2 –3.100/3.200 kg T3 -3.200/3.300 kg. variables studied average weight, feed intake, weight gain, conversion efficiency, protein efficiency ratio, carcass yield, prime cuts (breast, thigh thigh),wings, back, head + neck feet. birds showed better when fed containing 3,000 3,100 final stage, can be 77