Growth performance and nutrition-related serum metabolites in growing pigs fed on Acacia Tortilis leaf meal

Abstract The objective of the study was to determine the response in metabolites and growth performance in growing pigs fed on Acacia tortilis leaf meal-based diets using a dose-response trial. Forty-eight male hybrid pigs (28.5±2.18 kg BW) were individually penned and assigned in a complete randomized design to six experimental diets containing 0, 30, 60, 90, 120, and 150 g/kg DM of A. tortilis leaf meal. Pigs were bled once after three weeks for biochemical analyses. An increase in A. tortilis resulted in quadratic reductions in ADFI ( P P P A. tortilis . There was a quadratic increase in alanine aminotransferase (ALT) ( P P P A. tortilis inclusion increased. Using the broken-stick model, the optimum levels of leaf meals marking break points at which threshold values of ADG, serum iron, serum cholesterol and total protein occurred when A. tortilis was included at 64.8, 60.0, 87.1 and 63.2 g/kg DM, respectively. In conclusion, growth performance, serum iron and total proteins are reliable indicators of optimum inclusion levels of leaf meals in pigs.