Correction to: J Anim Sci Biotechnol. 5, 49 (2014)

https://doi.org/10.1186/2049-1891-5-49

Following publication of the original article [1], it was found that the Table 3 (the data of Plasma urea nitrogen) and Table 4 (the data of Plasma SOD and MDA) are incorrect.

Table 3 Effects of dietary tryptophan levels and diquat injection on the concentrations of tryptophan, large neutral amino acids (LNAA) and urea nitrogen in the plasma of the weaned piglets
Table 4 Effects of dietary tryptophan levels and diquat injection on the activities of antioxidant enzymes and the malondialdehyde concentration in the plasma and liver of the weaned piglets

The correct tables are provided below:

The original paper has been updated.