规模化猪场的疫病控制是一项系统工程,应从抓好小气候环境控制、日常饲养管理、卫生消毒、保健、免疫接种、检疫检测、有害微生物净化等环节做起,采取综合性措施,才能控制疫病的发生和流行.

当前母猪生殖保健存在五大误区:滥用缩宫素、滥用脱霉剂、滥用抗生素、滥用生殖激素、子宫滥用药物,文章一一针时这些误区进行分析,提出了科学合理的保健方案.

Forty-five Chinese Holstein cows were randomly divided into 3 groups according to weight, calving days,milk yield and parity.The cows in 3 groups were fed with basic diet,basic diet pius 50 and 80g/day composite antioxidant respectively.The milk yield for each cow was monitored everyday and somatic cell count in milk was detected at fixed period.Milk samples wete collected on days 1,10,20 of official experiment. The activities of superoxide dismutase (SOD),glutathione peroxidase (GSH-Px),malondialdehyde(MDA) and catalase (CAT) in the milk were measured.Results showed that the activities of SOD,GSH-Px, and CAT in the experimental group were sifnificantly improved(P<0.05 or P<0.01),while the MDA content was sifnificantly reduced(P<0.05),the milk yield has increased(P<0.05) and SCC in milk has dropped(P<0.01) after feeding composite antioxidant. All the data suggest that composite antioxidant has positive effects on increasing the antioxidative activity of bovine mammary gland , scaveinging free radicals and enhancing the healrh level of mammary gland.

<正>在猪场,母猪子宫内膜炎发病率在20%以上,而且更多的隐性子宫内膜炎不被发现和认识,它给母猪的生殖健康带来了严重的威胁。发生子宫内膜炎的母猪与正常母猪相比产后初配的天数和产后受孕天数相应的增加15.81天和30.67天,情期受胎率下降21.36%,平均配种受胎次数增加0.51次。同时,母猪发