豬流行性腹瀉恢復後感染生豬生產需要幾個月

taiwanp · 發表於 2014-1-31 15:34:42

雖然豬流行性腹瀉和豬傳染性胃腸炎是相似的病毒，恢復時間差異很大發布日期： 2014年1月29日

當一個農場被爆發打豬流行性腹瀉病毒  （PEDV），它可能需要幾個月的生產恢復到常規水平。馬修·特納博士，與獸醫預安排農場，討論在國際集約化畜牧生產的豬肉峰會期間舉辦的瓦特全球媒體遙控豬流行性腹瀉病毒圓桌討論的困難養豬生產者有個豬流行性腹瀉病毒爆發後反彈。本次峰會是與國際生產和加工博覽會（同時舉行IPPE）在亞特蘭大1月29日。

豬流行性腹瀉是一種類似病毒的一個比較有名的豬病毒，傳染性胃腸炎病毒（TGE）。用於治療與這兩種病毒感染後消毒的方法也類似。然而，復甦進程還遠未類似，特納說。

從歷史上看，它已經比較容易擺脫豬傳染性胃腸炎的，特納說，與豬傳染性胃腸炎成為流行的機率是罕見的。相反，它是難以擺脫的豬流行性腹瀉病毒和它成為流行的機率是更為常見。臨床症狀豬傳染性胃腸炎一個恢復過程中的表現是罕見的，但它是很常見的豬流行性腹瀉病毒，他補充說。

在最近的33個豬場獲得的數據採樣，它感染豬流行性腹瀉病毒豬斷奶恢復到正常的生產號碼的數量後平均14週了。抽樣顯示，斷奶母豬大約10頭前一個豬流行性腹瀉病毒感染兩個星期，但這一數字下降到幾乎沒有感染的一周。在接下來的三個星期裡，沒有豬斷奶了，但直到第六週斷奶前水平達到60％，他們在那裡的豬流行性腹瀉病毒感染前的。

“這需要大約14週的生產爆發前後母豬實際開始斷奶豬，她應該斷奶的數量，”特納說。

雖然斷奶數字可能反彈圍繞14時第  一個豬流行性腹瀉病毒感染後一周，它實際上需要更長的時間比生產完全恢復。“我們真的永遠不要回來正常生產通過全項的母豬場，”特納說。

製片人更警惕一個豬流行性腹瀉病毒爆發後，與人工流產和降低受孕率是比較常見的。是由一個積極的質量控制工作，確保已經歷了爆發豬流行性腹瀉病毒的農場不傳播病毒窩之間，他們沒有做任何培養。
“這些全部加起來更大的損失預斷奶的損失比我們通常希望看到，”特納說。

原文：
Recovery of pig production after PEDV infection takes monthsWhile PEDV and TGEV are similar viruses, the recovery times differ greatly
Release Date: 2014年1月29日
When a farm is hit by an outbreak of porcine epidemic diarrhea virus (PEDV), it can take months for production to return to regular levels. Dr. Matthew Turner, a veterinarian with Prestage Farms, discussed the difficulties pig producers have rebounding after a PEDV outbreak during a remote PEDV roundtable discussion hosted by WATT Global Media during the VIV International Pork Production Summit. The summit was held in conjunction with the International Production and Processing Expo (IPPE) in Atlanta on January 29.PEDV is a similar virus to a more well-known porcine virus, transmissible gastroenteritis virus (TGE). The methods used to treat and disinfect after an infection of the two viruses are also similar. However, the recovery process is far from similar, Turner said.Historically, it has been relatively easy to get rid of TGEV, Turner said, and the odds of TGEV becoming endemic is rare. Conversely, it is difficult to get rid of PEDV and the odds of it becoming endemic is much more common. The showing of clinical signs during a TGEV recovery is rare, but it is common with PEDV, he added.In a recent sampling of data obtained from 33 pig farms, it took an average of 14 weeks after a PEDV infection for the number of pigs weaned to return to normal production numbers. The sampling showed sows weaned about 10 piglets two weeks prior to a PEDV infection, but that number dropped to almost none the week of the infection. During the following three weeks, there were no pigs weaned, and it wasn't until the sixth week before weaning levels reached 60 percent of where they were before the PEDV infection."It takes about 14 weeks of production after the outbreak before a sow actually starts to wean the number of pigs she should be weaning," said Turner.While weaning numbers may rebound around the time of the 14th week after a PEDV infection, it actually takes even longer than that for production to fully recover. "We really don't ever come back to normal production through the full term for a sow farm," said Turner.Producers are more vigilant after a PEDV outbreak, and abortions and reduced conception rates are more common. An aggressive quality control effort is made to make sure that farms that have experienced a PEDV outbreak don't spread the virus between litters, and they do not do any fostering."Those all add up to higher losses pre-wean losses than we normally would expect to see," Turner said.
資料來源：  http://www.wattagnet.com/166288.html

ttaawwkk · 發表於 2014-2-1 23:40:22

johnny2007 發表於 2014-1-31 23:54
今天聽到有兩個大場PED有返撲的情況.

真的會返撲嗎???

我有遇到反撲，不是全部
只有偶發幾個案例....
但有一批懷孕母豬感染恢復後的十天之內就生產
該批懷孕母豬所生產的仔豬全數再度感染
不過這次母豬食量正常也能正常的哺乳，所以仔豬死亡率相當的低
但也從一開始的上吐下瀉到現在下痢到不像話......
其仔豬發育相當不良
而超過十天之後的懷孕母豬所生產的卻都沒有感染
所以我想應該是母豬的抗體還沒形成

豬頭兄 · 發表於 2014-2-1 11:07:32

本帖最後由豬頭兄於 2014-2-1 11:27 編輯

本文提供了很重要的資訊
看翻譯文不太懂
看原文也不完全懂
看有沒有大師可以再詳細說明的

PEDV is a similar virus to a more well-known porcine virus, transmissible gastroenteritis virus (TGE). The methods used to treat and disinfect after an infection of the two viruses are also similar.
PEDV跟TGE類似,只是TGE比較常見.兩種病毒的處理方式雷同.

However, the recovery process is far from similar, Turner said.Historically, it has been relatively easy to get rid of TGEV, Turner said, and the odds of TGEV becoming endemic is rare.
但是兩種病毒的恢復過程卻天差地別. 從以往的經驗來看,要擺脫TGEV相對簡單,TGEV長駐在爆發場的狀況也不常見.

Conversely, it is difficult to get rid of PEDV and the odds of it becoming endemic is much more common.
相對的,PEDV不但很難擺脫,常駐在爆發場內的狀況也很常見.

The showing of clinical signs during a TGEV recovery is rare, but it is common with PEDV
從TGEV中復原的臨床症狀不明顯,但是PEDV則非如此
(這一句不懂)

it took an average of 14 weeks after a PEDV infection for the number of pigs weaned to return to normal production numbers. The sampling showed sows weaned about 10 piglets two weeks prior to a PEDV infection, but that number dropped to almost none the week of the infection. During the following three weeks, there were no pigs weaned, and it wasn't until the sixth week before weaning levels reached 60 percent of where they were before the PEDV infection.
PEDV爆發場需要平均要14周才能恢復到原有的產能.
爆發前兩周一頭母豬可離乳10頭小豬.
爆發當周離乳率幾乎0.
接下來的三周離乳率0.
要到六周離乳率才會恢復到先前的60%.

"It takes about 14 weeks of production after the outbreak before a sow actually starts to wean the number of pigs she should be weaning," said Turner.While weaning numbers may rebound around the time of the 14th week after a PEDV infection, it actually takes even longer than that for production to fully recover.
大約要14周可恢復到先前的離乳數,但是豬場要從PEDV感染完全恢復,需要更長的時間.

"We really don't ever come back to normal production through the full term for a sow farm," said Turner. Producers are more vigilant after a PEDV outbreak, and abortions and reduced conception rates are more common.
母豬場可能永遠無法恢復到正常的產能
儘管生產者在經歷過PEDV爆發後作業上會比較謹慎,但是流產跟受孕率降低的機率仍可能偏高.

An aggressive quality control effort is made to make sure that farms that have experienced a PEDV outbreak don't spread the virus between litters, and they do not do any fostering."Those all add up to higher losses pre-wean losses than we normally would expect to see," Turner said.
盡可能避免病毒在不同窩小豬之間的傳播,也盡可能避免小豬代養.如此可避免離乳前的損失.
(這個不懂,這樣可避免PEDV的傳播嗎?)