Modelling the maximum potential of nitrogen deposition and requirements of lysine for broilers

摘要: This study aimed to develop a dynamic model estimate lysine (Lys) requirements based on the maximum theoretical potential of nitrogen deposition (NDmaxT) and metabolic bodyweight (MBW) growing broilers. Three N balance trials were conducted (6–21, 22–37 38–53 days age) at average ages 14, 30 46 days, respectively, with 36 male broilers (Cobb 500) used in each trial. In trial, NDmaxT was estimated by exponential fitting daily intake as function for age. The obtained application technique. To relation MBW, mean standard deviation generate new population. critical fitted NDmaxT, resulting following model: = 1677 + (–1677 13810 × MBW) (0.151MBW). data so generated Goettingen calculate Lys retention response. Modelling resulted greater than recommended values, an difference 1.05 times recommendation management guide studied strain. According results from this simulation, provided consistent estimates may enable nutritionists provide nutritional strategies optimise production MBW.