Digestion kinetics of protein feed ingredients and their impact on nitrogen utilization in growing pigs.

ABSTRACT: The velocity of nitrogen release impacts nitrogen utilization efficiency and animal growth. Yet the crucial junctures linking nitrogen release and utilization from diverse feed ingredients to digestion kinetic parameters remain obscure. This study aimed to evaluate and subdivide in vitro protein digestion characteristics (such as release rate of free amino acids [FAA]) of three commonly used protein feed ingredients and to correlate the characteristics with nitrogen utilization in vivo. Ten soybean meals (SBM), eleven cottonseed meals (CM), and nine rapeseed meals (RM) were selected for in vitro study. After predigested for 120 min, the characteristics were evaluated within the small intestine stage. The release rate of total FAA from CM was significantly lower than SBM or RM during the fa

SUBMITTER: Li J 

PROVIDER: S-EPMC12145679 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature