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- periparturient dairy cows 围产期奶牛
- periparturient dairy cow 围产期乳牛
- They raise dairy cows, hogs and chickens, too. 他们还饲养奶牛、猪和鸡。
- The dairy farm keeps many dairy cows. 乳牛场饲养了很多乳牛。
- The land is used mainly for dairy cows to produce fresh milk . 这片土地主要用来养奶牛，让它们产出新鲜牛奶。
- Abstract : Ketosis is a common nutrition metabolic disease of dairy cows. 摘要 ： 酮病是奶牛的一种重要的营养代谢病。
- Selection for Increased Production and the Welfare of Dairy Cows: Are New Breeding Goals Needed? 产奶量增多的基因选择与奶牛福利:是否需要新的育种目标?
- BOSTON: For most people, the word farm conjures up images of dairy cows out to pasture, or amber waves of grain. 波士顿:对大多数人来说,这个词农场虚构形象奶牛出牧场或黄色波浪谷物。
- Lower reproductive performance of high producing dairy cows is associated with negative energy balance(NEB). 高产奶牛繁殖性能下降与能量负平衡(NEB)有关。
- ViaLactia chief scientist Dr Russell Snell says Marge was discovered during a routine screening of dairy cows. 自从2001年马奇被发现后，研究人员成功的喂养了它并期望它的后代也能够产出低脂牛奶。
- The buffalo kingdom now ensouls all dairy cows, particularly those in organic farms. 水牛王国现在正给所有奶牛赋予灵魂，特别是在有机农场。
- The objective of this study was to explore the causes of mastitis in dairy cows and its control measures. 摘要[目的]探索奶牛乳腺炎病因及其防制措施。
- The objective of the study is to strengthen studies on immunocontrol of mastitis in dairy cows. 摘要[目的]为了加强奶牛乳房炎免疫控制。
- The milk fat percentage of 327 Chinese-Holstein dairy cows on the Xining Dairy Farm was determined. 对西宁奶牛场327头中国荷斯坦泌乳奶牛的乳汁进行乳脂率测定。
- However, though Iowa has lots of pigs, distillers' grains work much better as feed for beef and dairy cows. 然而，尽管艾奥瓦有很多猪，酒糟谷对肉牛和奶牛其实更好。
- It was an effectual method that cowside test diagnose the dairy cows subclinical ketosis with milk analysis strip. 使用乳汁分析试纸条牛旁检测是一种有效的奶牛亚临床酮病诊断方法。
- Effects of supplementary corn silage or concentrate on the digestibility of compound rice straw-based blocks and milk performance of dairy cows. 补充青贮玉米或精料对复合稻草块消化率及其饲喂奶牛产奶性能的影响。
- Function、use、effect、and problem of bovine somatotrop(BST) on lactation of dairy cow were elucidated in the article. 本文对牛生长激素（BST）对奶牛泌乳的作用机制、应用方法、效果及带来的问题等方面进行了论述。
- XIE Xian-Sheng. The effect of arginine on dairy cow sex. Animal Husbandry &Veterinary Medicine, 2003, 35(12): 19?20. 谢献胜.;精氨酸对奶牛后代性别控制的试验
- The result indicated that use of BST on nutritional metabolism and milk production of dairy cow could be raised. 说明了BST的应用确实可以调整奶牛体内营养物质的代谢水平和大幅度提高产奶量。
