Abstract
One hundred Cobb 500™ broiler chicks were used in a 28-day trial to study the effects of betaine supplementaton on performance parameters, carcass characteristics and blood parameters in commercial broiler. Birds were randomly distributed into five dietary treatment groups designated as T0, T1, T2, T3 and T4 and betaine was supplemented at 0%, 0.25%, 0.35%, 0.45% and 0.60% for T0, T1, T2, T3 and T4 treatment groups respectively. All birds had free access to ad-libitum feeding. Results indicated that, feed intake increased (P 0.05). Heterophil, Basophil, Serum albumin and Serum Glutamic Oxaloacetic Transaminase decreased (P<0.05) at 4th week. Maximum net profit per broiler (Tk. 18.4) was obtained from birds fed diet supplemented with 0.45% betaine. It was concluded that, increasing levels of supplemental betaine substantially improved performance parameter, carcass characteristics and net profit without interfering blood and serum parameters in commercial broiler.
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