Vol. 11, Issue 11 (2022)

An experiment was conducted by feeding diets with different levels of energy (2850, 2950 and 3050 kcal/kg in pre-starter diet, 2950, 3050 and 3150 kcal/kg in starter diet and 3050, 3150 and 3250 kcal/kg in finisher diet) and protein (21.5, 22.5 and 23.5% in pre-starter diet, 20.5, 21.5 and 22.5% in starter diet and 19, 20 and 21% in finisher diet) to commercial broilers for a period of five weeks to assess abdominal fat content in environmentally controlled and open sided housing system. In both the housing systems, feeding different levels of energy and protein had a significant influence on abdominal fat yield in broilers. As the energy and protein level increases, there was a proportionate increase in the abdominal fat yield. The interaction between feeding different levels of energy and protein and housing system showed that the abdominal fat yield was significantly differed only within T₆ (optimum energy and high protein) and T₇ (high energy and low protein) group birds, whereas other treatment groups showed a non significant effect with respect to dietary treatments.