[1]Department of Animal Feeds and Nutrition Faculty of Animal Husbandry Nusa Cendana University Kupang 85001 Indonesia;
[2]Department of Animal Feeds and Nutrition Faculty of Animal Husbandry Brawijaya University Malang 6514 Indonesia;
[3]Laboratory of AnimaI Reproduction Faculty of Animal Husbandry Brawijaya University Malang 6514 Indonesia;