Investigation of calcium and phosphorous levels in diets and sera of black-and-white cows in Litong District in Ningxia
zhou xue hui 1; zhang li 1; jiang xue qin 2; gong wei hong 3; chen yan ling 4; zhang lin 5; deng jian xin 6; yan xi hu 6; yang xue wen 6; wang yue xia 6; yang yan mei 6; jia yu zhen 6; liu hui 6; (1. lanzhou institute of animal science and veterinary pharmaceutics; chinese academy of agricultural sciences; lanzhou 730050; china; 2. ningxia hui autonomous region administration of agriculture and animal industry; yinchuan 750001; china; 3. ningxia total station of animal industry; yinchuan 750001; china; 4. northwest sci tech university of agriculture and forestry; yangling 712100; china; 5. lanzhou veterinary research institute; chinese academy of agricultural sciences; lanzhou 730046; china; 6. litong district administration of animal industry; ningxia hui autonomous region; wuzhong 751100; china)
..............page:16-18
Cloning and construction of recombinant expression vector of Hypodermin C
yang dong ying 1; 2 ; luo jian xun 2 ; tang li gang 3; guan gui quan 2; ma mi ling 2; liu zhi jie 2; liu ai hong 2; dang zhi sheng 2; wang yan hua 2; yin hong 2 ; ouyang wu qing 1 (1. college of animal science and technology; northwest sci tech university of agriculture and forestry; yangling 712100; china; 2. lanzhou veterinary research institute; chinese academy of agricultural sciences; lanzhou 730046; china; 3. animal husbandry company of zhifu district in shandong province; yantai 264000; china)
..............page:3-6