Effect of Organic Magnesium Supplemented from Different Time on the Antioxidation Capacity of Broilers

An experiment was conducted to study the effect of OM supplementation time on the performance and anti-oxidation capability of broilers. Four hundred and fifty day-old broilers were randomly allotted to five treatments. The five treatments were control, and group 2, 3, 4, and 5 (organic Mg diet was fed from 7th, 6th, 5th and 4th week respectively). The results showed that there was a tendency to reduce the MDA content in liver and heart with the supplementation of OM in the last four weeks. Broilers in group 3 had higher TAOC (P0.05). Birds fed OM had higher TAOC of liver, and GSH-Px activity of spleen compared with those of control (P0.05), and showed time-length-dependent character. The activity of CAT in muscle of group 3, 4 and 5 were enhanced significantly (P0.05). The activity of CAT in spleen of group 4 was increased significantly (P0.05). The use of OM enhanced the level of GSH in heart significantly (P0.05).