Jianli Xiong, Hongtao Ren, Guanglu Li, Xiaochan Gao, Yong Huang and Shiyang Gao, 2023. Effect of Vitamin E Supplementation on Growth Performance, Immune Function, Serum Biochemical Parameters, and Antioxidant Capacity of Swan Goose (Anser cygnoid). Pakistan J. Zool., 55: 1223-1228. DOI: https://dx.doi.org/10.17582/journal.pjz/20200703020702