Effects of Passive Immunization against Peptide Tyrosine Tyrosine on the Activity of Digestive Enzymes in Rats

Fan Zhiyong^1,2*, Zhang Guanglei¹, Zhou Dinggang³, Liang Zhe³, Wu Xin⁴ and Wang Fenglai²

¹Engineering Research Center for Feed Safety and Efficient Utilization of Ministry of Education, Institute of Animal Nutrition, Hunan Agricultural University, Hunan, 410128, China

²State Key Laboratory of Animal Nutrition, Beijing 100081, China

³College of Animal Science and Technology, Sichuan Agricultural University, Yaan, 625014, China

⁴Hunan Provincial Engineering Research Center of Healthy Livestock, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China

^*Corresponding Author: Fan Zhiyong, Engineering Research Center for Feed Safety and Efficient Utilization of Ministry of Education, Institute of Animal Nutrition, Hunan Agricultural University, Hunan, 410128, China, Tel: +86-731- 84618176 Email: