Amino acid digestibility of single cell protein from Corynebacterium ammoniagenes in growing pigs

One experiment was conducted to evaluate the effect of a single cell protein (SCP) produced by Corynebacterium ammoniagenes on ileal amino acid digestibility in growing pigs. Nine barrows (20.2 ± 1.47 kg of body weight) fitted with a T-cannula in the distal ileum and were allotted to a 3 × 3 Latin square with three diets and three periods per square. Two diets containing soybean meal (SBM) or SCP as the only source of amino acid and a nitrogen-free diet were formulated. The coefficient of apparent ileal digestibility (CAID) and standardized ileal digestibility (CSID) of crude protein and all indispensable AA except lysine, methionine and threonine, were lower (P<0.05) for SCP than for SBM. The SCP had higher (P<0.05) CAID and CSID of glutamine than SBM. The results provide information on the amino acid composition and digestibility of a new protein source in growing pigs.