V. H. La(Department of Animal Science, Chonnam National University)
B. R. Lee(Department of Animal Science, Chonnam National University, Korea Pear Research organization, Chonnam National university)
Md. T. Islam(Department of Animal Science, Chonnam National University)
S. H. Park(Department of Animal Science, Chonnam National University, Institute of Environmentally-Friendly Agriculture (IEFA), Chonnam National university)
T. H. Kim(Department of Animal Science, Chonnam National University)