...huong cua tuoi va mua vu den chat luong tinh dich va ket...
[Affection of age of boars and seasons to the sperm quality and results of artificial insemination]Anh huong cua tuoi va mua vu den chat luong tinh dich va ket qua phoi giong cua lon duc giong Dai Bach va Ladrance nuoi tai Bac Giang ...