, Yaser A. Amer, Prof. of mathematics, faculty of science, zagazig university
Ying Lin, College of Animal Science and Technology, Zhejiang A&F University, Hangzhou 311300, China Yogesh Mahor Yukun Jia, College of Animal Science and Technology, Zhejiang A&F University, Hangzhou 311300, China Yurany Andrea Hoyos Tejada
