试验收集了湖南、浙江、福建、广东等4省8市的规模化猪场各阶段猪的粪便样品74份和肠道样品15份,以及现场采集了广州某生猪屠宰场肝脏和肺脏样各30份共计149份样品,对产气荚膜梭菌在猪中的感染情况进行流行病学调查.处理样品后进行产气荚膜梭菌的分离培养,16s rDNA PCR并测序鉴定阳性菌株,后进行毒素型分析.结果表明,猪产气荚膜梭菌的总检出率为20.81％,其中粪样的阳性率为13.51％,肠样的阳性率为33.33％,肺脏和肝脏的阳性率为26.67％;哺乳仔猪和后备母猪的产气荚膜梭菌阳性率分别为22.73％和14.29％;毒素分型结果表明分离到的31株产气荚膜梭菌全部为A型菌株,其中74.19％的菌株携带Cpb2毒素基因.研究结果为猪产气荚膜梭菌的防控提供流行病学数据.

本文介绍了当前病死猪和病害肉优化处理中存在的问题,介绍了当前对病死猪和病害肉的优化处理的方式,并对病死猪病害肉的优化处理提出了相应的建议,希望为病死猪、病害肉的优化处理应用提供一些可供采纳的建议.

中国是对猪肉需求量巨大的国家同时也是生猪养殖大国,随着我国居民的生活水平的不断提高,猪肉食品安全与每一位居民的生活密切相关,特别是瘦肉精事件被媒体曝光之后,食品安全问题逐渐得到人们的重视.为了提高保障肉类食品质量、保障居民身体健康,需要严厉打击瘦肉精违法行为,对生猪养殖和屠宰的各环节进行严格管控,按照食品监管相关部门文件中有关瘦肉精的规定加大对肉类产品中瘦肉精的检测,有效的检测手段可以遏制非法添加瘦肉精的违法行为,同时食品安全也有一定的保障.

随着生活条件的日益改善,市民对猪肉的需求越来越高,为保障猪肉的质量安全,要加大生猪屠宰场检疫工作,及时发现存在问题并给出相应的对策.本文首先检疫工作的背景,之后举出了对生猪进行检疫的意义,可以有效的预防传染病和寄生虫病,保障消费者的身体健康.最后指出了检疫工作存在的问题并给出了相应的解决方案.

随着社会经济的不断发展,人们生活水平有所提升,对生猪产品的需求急剧提升.为了能够从源头强化对生猪产品质量的全方位管控,减少动物疫病的传播路径,近年来我国相关部门也加强了对生猪运输车辆的监管,并出台备案政策,在一定程度上实现了动物疫情无跨区域传播目标.以生猪运输车辆备案监管作为切入点,阐述当前我国对生猪运输车辆的管理要求,指出目前存在于生猪运输车辆备案监管中的突出问题,并提出相关建议,希望能够为进一步提升我国生猪运输车辆的备案监管水平提供借鉴.

Objective]For the purpose of providing technical evidence for scientific control of human H7N9 infection, evaluating the effectiveness of monthly market closing measure.[Methods] One wholesale live poultry market and two retail live poultry markets in Guangzhou city were selected in March 2015. The environmental swabs and live poultry oral/cloacal swabs were sampled before,during and after the market closing day,and 2 470 samples were collected in total and then tested for type A avian influenza virus(AIV)byfluorescence RT-PCR. [Results] The positive rates of virus in environmental samples in 11 rounds samplings were 17.78%,10.00%,5.19%,29.63%,21.48%,22.96%,22.22%,45.93%,40.74%,47.41% and 25.19%,respectively. The results showed that although the positive rate of AIV declined dramatically on the day just after the market closing,the rates increased significantly from the second day afterwards. Besides,the positive rate of virus in the environmental samples increased with a similar trend to that of the poultry samples(Pearson correlation coefficient was 0.82).[Conclusions] This study is thefirst reported cohort study on the effect of monthly closing day in live poultry markets of China. The results indicate that although the monthly market closing practiceappearsto reduce AIV loads in LPMs,the effect is temporary.And it is indicated that AIV positive rate rose sharply again with the opening of the market and re-introduction of AIV infected live poultry. This suggests that the monthly market closing measure alone maynot be sufficient to control and eradicate AIV in this area.