THE INFLUENCE OF FEED PROTEIN LEVEL ON PRODUCTIVE PERFORMANCES AT ROSS 308 HYBRID

Abstract

Few years ago our country start breeding broiler hybrids due to the high growing
performances. In our experiment the influence of protein ration level on growing
performances and slaughter yield hybrid Ross 308, were performed. The two
experimental lots were keeping in optimum microclimate condition in unprotected
cage, on soil on permanent layer and having different protein level ration. For
obtaining the information regarding the average gain the chicken were weighing
weekly and the feed quantity ingested were periodical weighing. The L1 group
received a high protein level ration content compared with L2 group. During the all
experiment period the highest weighing gain on group L1, were observed. At the end
of the experiment the average gain for the chicken from L1 group were 2555,2 g with
a feed conversion of 1,96 kg feed / kg gain and for L2 group were 2099,6g with a
feed conversion of 2,14 kg feed / kg gain. The highest slaughter yield values (69, 67
% at warm and 65,6 % after 24 h of refrigeration ) for the group L1, were observed.