Effect of Different Levels of DL-Methionine Replaced with Betafin on Some of Blood Parameters on Broiler Chickens

This experiment was conducted to evaluation the effect of dietary Betafin (Betaine anhydrous 97%) supplementation as a replacement for DL-Methionine on blood parameters of 42 days old broiler chickens. Total 300 days old Ross 308 broilers were used in a completely randomized design with 4 treatment and 5 replicates in each treatment and 15 birds/replicates and reared on the floor pens for 42 days. A basal diet was formulated as control according to NRC recommendations for starter (1-21 days) and grower (22-42 days) periods. In experimental diets, DL-Methionine levels were formulated either according to NRC (control (T-1)) or at 90 (T-2), 80 (T-3) and 70% (T-4) of the control. The incompletes levels of the Methionine in T-2-T-4 supplemented by adding Betafin to the diets. The results indicated that by replacement of Betafin. instead of DL-Methionine in diets of broiler blood parameters was not altered significantly. Although, in birds fed T-4, the concentration of the all measured blood parameters except HDL was the maximum or minimum when compared to other groups.