1Simultaneous Determination of Resides of Macrolide and Lincosamide in Animal Feed by Ultra-performance Liquid Chromatography-Tandem Mass SpectrometryHan Juanzhu, Yang Wenyao, Xuan Bing, Ma Lei, Li XinnanExperimental Research1-92Genetic diversity and phylogenetic relationship of three local pig breeds in Northwest ChinaZhou Xiumin, Yang Yongjiang, Bi Yingjie, Ren Weihe, Zhang LiExperimental Research10-153Analysis of SNP Polymorphism of SLA-DRB Gene Exon 2 in PigsChang Ruigang, Shu Dan, Ren Weihe, Luo Longlong, Liu LixiaExperimental Research16-184Problems should be paid attention to pig farm in high temperature seasonYang Zuoju, Leng HanbingFeeding and Breeding19-225Study on improving reproductive performance of Chinese traditional medicine in sowsShi Yuewu, Tong Yanlin, Liu Qizhi, Mi Chengjun, Liu Yingzi, Zhou TiezhongFeeding and Breeding23-256Application of Biotechnology in Yak's High Efficient ProductionPingcuo Zhandui, Zhu Yanbin, Basang Wangdui, Tian Bo, Danjiu Luobu, Wang Jiu, Gongga Sangbu, He Shicheng, Ciren Zhuoma, Ni MaFeeding and Breeding26-297The exploration on application and prospect of sorghum instead of corn in the feed of poultryLiu Shengnan, Sun YanFeeding and Breeding30-338Diagnosis of mixed infection of Pasteurella multocida and bovine respiratory syncytial virusCao Yu, Yu Rendong, Zhou YulongEpidemic Prevention34-399Experimental Study on Treatment of Gout in Laying Hens with Integrated Traditional Chinese and Western MedicineYang Lihua, Liu Chunjie, Wen WeiEpidemic Prevention40-4310Effect of meteorological factors on dairy cattle breeding in Heilongjiang ProvinceChen Zhiying, Yin Ni, Chi XiangheInvestigation and Analysis44-4811Production situation analysis on laying hens and chicken of Liaoning province in the first half of 2017Zheng Guangyu, Zhang Tingting, Liu QuanInvestigation and Analysis49-5312Dairy production situation research report of Liaoning Province in the first half of 2017Lin GuangyuInvestigation and Analysis54-5513Main problems and countermeasures of thinking on grain as fodderZhuang Wenfa, Chen Chong, Zhang Xiaohua, Yang Wei, Cai XingmanMonograph Summarize56-59 