Evalution of protein characteristics of Poultry byproduct meal with CNCPS model and its different levels effect on Baluchi lambs performance

In order to investigate the effect of various levels of Poultry by-product meal(PBM) on the performance of Baluchi male lambs, an experiment was conducted in a completely randomized design with 4 experimental diets containing (0, 2.5, 5 and 7.5 ) doses of Poultry by-product meal residues and 6 replicates (Lamb) in each treatment. The fattening was a 90- day feeding period preceded by a 14-day adaptation period. Different levels of Poultry by-product meal had no significant effect on daily lamb weight, average daily intake of dry matter and feed conversion ratio. Significantly higher Blood urea nitrogen was observed in control diet than other treatment (P <0.05), but there was no significant difference in plasma glucose in experimental diets (P <0.05). The protein and protein portions of A, B, B1, B2, B3 and C in this experiment were 11.8, 8.23, 22.21, 19.1, and 81.3%, respectively. The results of current study showed that Poultry by-product meal 7.5% can be used in lamb̓̕s finishing diets without adverse effect on performance.