Effect of N,N-dimethylglycine Sodium Salt on Organ Indexes, Blood Physiobiochemical Indices and Antioxidative Performance of Broilers

The present study was conducted to evaluate the effects of NNdimethylglycine sodium salt(Na-DMG) on organ indexes, blood physiobiochemical indices and anti-oxidative performance of broilers. A total of 720 one-day-old AA broilers were randomly allocated into six groups with 6 broilers in each group, and fed with a commercial starter diet supplemented with Na-DMG at 0, 300, 500, 1 000, 1 500 and 2 000 mg/kg, respectively, for 42 days. The results showed that 1) dietary supplementation of Na-DMG at 2 000 mg/kg improved signicantly the spleen index of broilers(P 0.05); 2) compared with the control group, Na-DMG supplementation at 1 000 mg/kg increased signicantly the blood triiodothyronine(T3) leve l of 21-day-old broilers(P 0.05), but had no significant effect on blood physiobiochemical indices of42-day-old broilers(P 0.05); 3) dietary Na-DMG mainly affected the total antioxidant capacity(T-AOC) in blood and liver and at concentrations above 500 mg/kg improved signicantly the blood T-AOC level of 42-day-old broilers(P 0.05), as well as at concentrations above 1 000 mg/kg increased the liver T-AOC level compared with the control group(P 0.05). In conclusion, dietary Na-DMG can promote the development of the pancreas effectively, enhance the immune function and signicantly increase the antioxidant capacity of broilers, especially when supplemented at concentrations at 1 000–2 000 mg/kg.