Determination of Optimum Protein and Energy Levels for Broiler Chicks in the Tropics

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Abstract
THREE experiments were conducted to investigate the effects of different protein levels (17, 20, 23 and 26%) and energy levels (2800, 3000 and 3200 KCals/Kg diet) on the performance of broiler chicks in the tropics. Maximum weight gains and efficiency of feed conversion were obtained on the rations containing 23 or 26% protein. As the dietary energy level increased, there was a slight depression in weight gain. The best performance of chicks was obtained on the rations containing 2800 KCals/Kg diet. Feed intake was observed to be inversely related to energy content, although in most cases not significantly so at each protein and energy series. Generally birds were observed to meet their energy requirements. From these studies, a protein level of 23 or 26% and energy level of 2800 or 3000 K Cal/Kg diet may be tentatively recommended for a tropical country like Nigeria.

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