提高淘汰西门塔尔和荷斯坦奶牛优质肉比例的研究

杜玮;余雄;李洪波;张杨;周岩伟;于青云;周磊

The Rearch of Improving the High Quality Meat Rate of Simmental and Holstein Cow

DU wei;YU Xong;LI Hong-bo;ZHANG Yang;ZHOU Yan-wei;YU Qing-yun;ZHOU Lei

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