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- The Contents of progesterone(P) and oestradiol(E_2) in the milk of 50 Chinese Holstein cows were measured within 23 days after delivery and 12 days during oestrus with radioactive immunity. 用放射免疫法测定了50头荷斯坦牛产后23d内及发情前后12d内乳中的孕酮(P)和雌二醇(E2)的含量。
- A Study on the Fertility of Chinese Holstein Cows in Chengdu Area 成都地区黑白花奶牛繁殖力研究
- Relationship Between the Parity of Chinese Holstein Cows and the Contents of Progesterone and Oestradiol in Their Milk 奶牛产犊胎次与乳中孕酮、雌二醇含量的关系
- Change of Contents of Progesterone and Oestradiol in the Milk of Chinese Holstein Cow During Oestrous Cycle 中国荷斯坦牛发情周期中孕酮、雌二醇含量的变化规律
- The Relationship Between Afterbirth Non-exuviation of Chinese Holstein Cows and the Contents of Progesterone and Oestradiol in Their Milk 奶牛胎衣不下与乳中孕酮、雌二醇含量的关系
- The Contrast of The Body Measurement Traits, Body Weight and Production Trait between Australian Holstein Cows and Chinese Holstein Cows under TMR Breeding Condition TMR饲养条件下中、澳荷斯坦牛体尺体重及生产性能的比较
- Chinese Holstein cows 中国荷斯坦牛
- Chinese Holstein cow 中国荷斯坦牛
- These results suggest that genotype CC of HSP70-1 gene may be used as a molecular and genetic marker to improve the phenotype of anti-mastitis in Chinese Holstein dairy cows. 在中国荷斯坦奶牛群体中,HSP70-1基因CC基因型可作为改良奶牛乳腺炎抗性性状的分子遗传标记。
- The German Holstein cows rank among the world's best of Holstein breed. 德国的荷斯坦奶牛是世界最好的荷斯坦种群。
- In this study, 30 Australian Holstein cows and 30 Chinese cows were sampled to measure about the body measurement traits, body weight and production trait under TMR breeding condition. 摘要选择年龄、胎次、泌乳期相近的澳牛与我国本地奶牛各30头，采用单因素对比试验方法，测定澳牛与本地奶牛在全混日粮(TMR)饲养条件下体尺、体重及生产性能的差异。
- Six Holstein cows were used to study the effect of premix and compound buffers on milk production and milk composition. 试验一用六头荷斯坦奶牛研究了添加预混料和复合缓冲剂对奶牛产奶量和乳脂构成的影响。
- Forty-two lactating Holstein cows were used in a randomized complete block design. 本试验选用42头荷斯坦产奶牛分为3组，每组14头。采用完全随机化区组设计进行试验。
- Genetic diversity in Xuwen and Hainan yellow cattle and Holstein cows based on protein polymorphisms was studied with starch electrophoresis in this experiment. 采用淀粉凝胶电泳技术和组织化学染色方法，研究徐闻黄牛、海南黄牛和荷斯坦牛血液蛋白的遗传多样性。
- The PCR-SSCP products of primer showed polymorphisms and could be divided into four genotypes: AA,AB,AC,CC among 70 Jersey and Holstein cows. 供试的70头娟姗牛和荷斯坦奶牛共发现4种基因型;分别为AA型、BB型、AB型和AC型;卡方检验奶牛在该位点基因频率差异极显著(P<0.;01);未达到Hardy Weinberg平衡。
- In this study, the milk components SCC,NAGase, peroxidase, catalase, lipase, and FFA were analysed and compared 434 milk samples from 30 Holstein cows. 对某牧场30头荷斯坦奶牛的434个奶样进行体细胞数、NAG酶、过氧化物酶、过氧化氢酶、脂酶、游离脂肪酸含量的测定。
- Abstract Eleven trace elements in fetal cotyledon and dam hair of female Tianzhu white yaks and Lanzhou Holstein cows were measured. 摘要 测定了天祝白托牛母牛、兰州荷斯坦母牛胎儿胎盘和被毛中的11种微量元素含量。
- The objective were to determine effects of selenized yeast on lactating Holstein cows performance and in selenium concentrations in the serum and milk. 通过日粮添加富硒酵母研究有机硒对泌乳奶牛乳硒含量和血清硒含量的影响。
- The polymorphism of DGAT1's 3'UTR in Chinese Holstein was detected through PCR-SSCP (Polymerase Chain Reaction-Single Strand Conformation Polymorphism). 摘要采用PCR-SSCP分子标记方法对中国荷斯坦奶牛DGAT1基因3'非翻译区进行了多态性分析。
- The result showed that three genotypes AA, BB and AB of the 3'UTR of DGAT1 gene were found and the genotype frequencies were 0.2977, 0.0534, 0.6489 in Chinese Holstein. 结果表明：在中国荷斯坦奶牛中检测的DGAT1基因3'UTR有AA型、BB型和AB型3种基因型，其频率分别为0.;2931，0
