No. 9, 2008

• 7  Study on Vitamin A Optimum Requirements of Lactating Holsteins…………………Zhao Guoqi, Guo Yuhua, et al.

  11 Effect of Dietary Concentrate-to-forage Ratio on Milk Production and Its Contents…Caodan, Wang Jinxun, et al.

  13  Effects of Dietary Protected Fat on Milk Production and Its Contents…………………………………Tana, Jirimutu

  15 The Application of the Whole Cottonseed and the Cottonseed Meal on Dairy’s Feedstuffs………………………………………………………………………………………………………………………Wang Anping, Tian Kexiong, et al.

  18 Research Progress of Vitamin E in Cow Nutrition…………………………………………Wang Yaqian, Yu Lu, et al.

  21 The Growth, Breeding and Production Performance of Cloned Holstein Cattle…Lu Donglin, Wei Dianhui, et al.

  24 Bovine Sex-Controlled Semen and Its Application…………………………………Sun Fengjun, Xue Jianhua, et al.

  27 Analysis of Correlation Factors Affecting the Milk Yield of Xinjiang Brown Cattle………Liu Wujun, Fang Yi, et al.

  29 Effects of Mineral Nutrients on Reproduction Performance in Dairy Cow………Guo Aiwei, Xiong Chunmei, et al.

  32 Etiology of Subacute Ruminal Acidosis and Its Deuteropathy in Dairy Cow……………………………Ma Chengxi

  34 Isolation and Identification of Dermatophyte in Dairy Cattle…………………Zhao Changcheng, Wang Jian, et al.

  37 Study on the Etiology of Retention of Placenta in Dairy Cows……………………………………………Luo Junping

  39 Investigation on Recessive Ketosis in a Dairy Farm of Minhe County in Qinghai Province………………………………………………………………………………………………………………………………Jin Zhiyong, Zhang Shou

  41 Isolation, Identification and the Susceptibility Test of  Pasteurella Multocida in Dairy Cattle……………………………………………………………………………………………………………………Chen Jianxin, Yan Jianglin, et al.

  43 Raw Milk IgG and Lf Concentration Improvement Using IgG/Lf High Synthesis Capability Cow Selection Program……………………………………………………………………………………Liu Guanglei, Wang Jiaqi, et al.

  49 Minimizing Phosphorus Excretion in Ruminants by Trophic-manipulation…………………………Yang Zhengde