Research on the influence of dietary macronutrients on food intake and its regulatory mechanisms in broiler chickens

摘要

An experiment was conducted with two isocaloric diets (low protein (LP): 16.63 MJ/kg gross energy (GE), 126 g/kg protein, 106 g/kg fat; low fat (LF): 16.73 MJ/kg (GE), 242 g/kg protein, 43 g/kg fat) to search for the role of macronutrients in the regulation of the parameters of the energy balance and of food intake of broiler chickens. Broilers receiving the LP food had an excessive energy intake relative to their protein intake, resulting in a higher heat production and more fat accretion. Moreover,these animals had a more efficient protein metabolism. There was no clear relationship between diet induced thermogenesis (DIT) and level of food intake.