Reproductive Performance Analysis of Bulls of Milk Shorthorm and Angus Cattle;
短角、安格斯两品种公牛繁殖性能分析
Discussion on Chinese Holstein Bull Breeding;
中国荷斯坦种公牛培育刍议
The Mechanism and influence of Heat Stress on Semen Quality in Breeding Bull;
热应激对种公牛精液品质的影响及机理研究
Influence of dietary organic selenium on the sperm vitality of breeding bulls;
添加适量有机硒对种公牛精子活力的影响
The utility of MIS of breeding bulls in China;
计算机在全国种公牛站信息管理中的应用
The scrotal circumferences(SC) and some semen qualitative characteristics including semen volume,sperm motility and concentration, 6 wks semen production and effective sperm counts of breeding bulls in four breeds(21 Simmental,12 Limousin,6 Gelbvich and 12 Holstein) were measured in the Zhongda Breeding Bull Station of Shandong.
通过对山东中大种公牛站现有四个品种(西门塔尔、利木赞、盖普威、荷斯坦)种公牛阴囊周径(scrotal circumference,SC)的测量,分析其与采精量、精子活率、精子密度、6周总采精量、6周总有效精子数5个指标间相关关系。
Effect of different levels of selenium on semen quality in bulls
不同硒水平对种公牛精液品质的影响
With the PCR-SSCP (polymerease chain reaction-Single Strand Conformation Polymorphism), genetic polymorphism of Catsper1 gene’s 4 sites and ACTG2 gene’s 2 sites in 40 bulls were detected in this study.
种公牛的精液品质好坏决定着牛群体的发展和品质改良。
The Influence of heat stress on semen quality and serum biochemical indexon beef breeding bull;
热应激对肉用种公牛精液品质及血清生化指标的影响
Factor Analysis of Affecting the Frozen Semen Quality of Luxi Cattle Bull
鲁西黄牛种公牛冷冻精液质量影响因素分析
Reproductive Performance Analysis of Bulls of Milk Shorthorm and Angus Cattle
短角、安格斯两品种公牛繁殖性能分析
Primary Analysis of Fresh and Frozen Semen Quality of South Devon Bull
南德温种公牛原精、冻精品质初步分析
Effect of different levels of selenium on semen quality in bulls
不同硒水平对种公牛精液品质的影响
A STUDY ON CROSS COMBINATIONS OF DANISH HOLSTEIN BULLS TO OTHER STRAINS OF HOLSTEIN COWS
丹麦黑白花种公牛与不同品系黑白花母牛杂交组合配套的研究
Characterization of alternative complement hemolytic pathway activity in Holstein bull serum
荷斯坦种公牛血清替代补体溶血活性研究(英文)
The Mechanism and influence of Heat Stress on Semen Quality in Breeding Bull;
热应激对种公牛精液品质的影响及机理研究
Effects of Copper and Manganese on Semen Quality and Antioxygenic Property in Stud Holstein Bulls
铜和锰对种公牛精液品质及抗氧化性能的影响
Effect of Succulent Fodder to Bull Semen Quality
多汁饲料对种公牛精液品质的影响研究
Observation of The Growth and Development of Canadian and Germany Simmental Bulls
加系和德系西门塔尔肉用种公牛生长发育观察
Some Details Easily Neglected in Feeding and Management of Breeding Bulls
种公牛饲养管理中易被疏忽的几项细节管理
A milk cow is a female, a bull is a male of the same animal.
奶牛是母牛，而公牛则是这种同类动物的雄牛。
a soft thick undyed leather from the skins of e.g. buffalo or oxen.
一种软而厚的天然色水牛或公牛皮革。
Our company act for various living the leather, the cow skin of head customs clearance whole affairs!!!
本公司代理各种生牛皮、牛头皮通关一切事宜！！！
His bull will come to serve our cows tomorrow.
明天我们用他的公牛与我们的母牛配种。
"cattle:any of various mammals of the genus Bos, including cows, steers, bulls, and oxen, often raised for meat and dairy products."
牛:一种牛属哺乳动物,包括母牛、食用牛、公牛,为食用肉和奶制品而饲养。
Any of various mammals of the genus Bos, including cows, steers, bulls, and oxen, often raised for meat and dairy products.
牛一种牛属哺乳动物，包括母牛、食用牛、公牛，为食用肉和奶制品而饲养
A young cow or bull.
小牛年幼的母牛或公牛