For example, silage production is not common, thus precluding the use of microbial cultures.

例如，由于青贮饲料的生产并不普遍，因而阻碍了微生物培养物的使用。

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No silage and no additives for them if their milk is to be made into cheese.

如果牛奶用来制作奶酪，则不使用青贮饲料和特别添加料。

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Breeding of a new dual-purpose grain and silage hybrid maize variety Yudan No.

粮饲青贮兼用型杂交玉米新品种渝单七号的选育。

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