D. H. Lim1, V. U. Mayakrishnan1, K. S. Ki1 and Tae Il Kim1*
1Dairy Science Division, National Institute of Animal Science, Rural Development Administration, #114, Shinbang 1Gil, Seonghwan-eup, Seobuk-gu, Cheonan-si, Chungcheongnam-do 31000, Republic of Korea