dairy cattle 奶牛 ; 乳用牛
Dairy Cattle Farmer 奶牛农民 ; 奶牛农场主
quirement of dairy cattle 乳牛养分需要量
China Dairy Cattle 中国奶牛 ; 对青海省奶牛胚胎移植的思考与建议 ; 上海光明召开荷斯坦奶牛育种会议 ; 美国对牛奶品质的监控
nutrients requirement of dairy cattle 乳牛养分需要量
Black and White Dairy Cattle 因此又称之为黑白花牛 ; 因被毛为黑白相间的斑块
They learn first hand about the health and nutrition of dairy cattle, as well as the science of making butter, cheese, and other dairy products.
他们亲自了解有关奶牛的健康和营养知识，以及制作黄油，奶酪和其他乳制品的技术。
The state's refineries already churn out more than five times as much of the stuff as its small stock of dairy cattle can eat.
该州的精炼厂已经生产出的饲料数量是其小型奶牛可食用量的五倍以上。
Dairy cattle similarly produce vast quantities of GHG emissions.
奶牛也同样产生大量的温室气体。
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