老湿司午夜爽爽影院榴莲视频-国产欧美日韩电影一区-亚洲成熟毛多妇女av毛片-中文日韩欧美天堂-国产欧美精品av-欧美亚洲成人免费电影-久久精品视频91

news

What kind of disease is colibacillosis

Duck raising equipment has now been recognized by most people and used by most duck raising places. Although duck raising equipment can assist duck raising and ensure the cleanness and hygiene of the farm, duck raising equipment can not prevent the occurrence of colibacillosis. Colibacillosis is a kind of acute or chronic disease caused by pathogenic Escherichia coli. It is very lethal and has harmed many poultry breeding industry recently.
The incidence rate of infection is very high due to colibacillosis, which is able to infect ducks of all ages. However, due to the different environment of farms, some farms with relatively good environmental hygiene control have a low prevalence rate, while the poor farms with poor environmental hygiene control without using duck farming equipment have a higher incidence. The incidence rate and mortality rate of this disease are quite different. Ducklings passed through acute septicemia, while adult ducks mainly suffered from subacute and chronic infection. In most cases, due to the influence of various stress factors and other diseases, the infection of this disease may be very serious. The disease often occurs in adult laying ducks before opening. The addition of dead Amoy rate affects laying, and the production performance cannot be fully developed. After the disease occurred in the breeding duck farm, it directly affected the hatching rate and hatching rate of the eggs. Colibacillosis can occur all the year round, but it often occurs in rainy, hot and humid seasons. Poor ventilation, poor sanitary conditions and high density of culture are the main causes of the disease.
Well, Xiaobian has introduced to you what kind of disease E.coli Disease is. The next problem we are facing is how to prevent and treat it. Then the next phase of inclusive duck breeding equipment will discuss with you how to prevent and treat E.coli Disease.

  • Contact us
  • Web:http://m.destudio.cn/en/
  • http://qdph.en.alibaba.com
  • Tel/Whatsapp/Wechat:+8618266221406 +15621127700
  • Email:elsa@sdpuhui.cn nanaliu@sdpuhui.cn
  • Focus on us
  • Sales service hotline
  • 18660928200
  • Address：The streets of Bei'an Li Ling Industrial Park in Qingdao city of Jimo
  • Address：China Shandong Linyi Town Secondary Village Development Zone

Copyright 2017 Qingdao Puhui Agriculture and Animal Husbandry Science and Technology Co., Ltd. All Rights Reserved

欧美制服丝袜国产日韩一区 | 国内少妇人妻偷人精品XXX | 野花视频高清HD完整版 | 色哟哟国产精品一区二区真心好看 | 黄 色 网 站 免 费 涩涩屋 | 免费一级欧美片在线观 | 97久久久久人妻精品专区 | 日韩人欧美?片内射∵久久中国 | 亚洲精品国产综合久久一线 | 国产精品中文原创AV巨作首播 | 亚洲日韩一区在线观看 | 亚洲黄色一级大片 | 国产成人手机高清在线观看网站 | 国产精品毛片一区视频播 | WWW夜片内射视频日韩精品成人 | www.999精品视频观看免费 | 黄色毛片在线观看 | 蜜桃一区二区三区视频网址 | 一级黄色香蕉视频 | 午夜福利一区二区三区高清视频 | 久久久久久免费一区二区三区 | 国产大屁股喷水视频在线 | 国产精品久久久久久亚洲内射 | 久久夜色国产亚洲色欲AV | 欧美曰韩日B大片在线看 | 国产成人精品久久一区二区三区 | 又大又粗欧美黑人AAAAA片 | 无码AV免费精品一区二区三区 | 国产麻豆精品精东影业AV网站 | 久久不卡免费视频 | 欧美黑人又粗又大XXXX视频 | 国产国产精品人在线视 | 国内精品久久人妻互换 | 日韩高清成片免费视频 | 国产高潮国产高潮久久久无码 | 无码中文2020字幕二区 | 四虎影视国产精品亚洲精品 | 国产成人久久精品二三区麻豆 | 亚洲精品午夜久久久久久久久 | 国产成人精品无码免费视频 | 免费看**a一级毛片 国产精品无码AV片在线专区 |