PRRS疫苗的效益

jmpig2002

請問各位朋友是否有人打prrs疫苗
其對母豬隻繁殖障礙有多大的幫助?
對肉豬呼吸到综合症候群有多大的幫助?
還是有另類的處理方式?
煩請不吝討論:)

9v-6882

以下文章由經農公司提供

Douglas

Other swine diseases are usually part of PCVAD outbreak

By Jeff DeYoung, For Lee Agri-Media

Help is on the way for pork producers battling porcine circovirus associated disease (PCVAD).
A joint study with Iowa State University and Boehringer Ingelheim Vetmedica Inc. in St. Joseph, Mo., has indicated other swine diseases play a key role in PCVAD occurrence and severity. The announcement was made during World Pork Expo June 8.
In addition to porcine circovirus type 2 (PCV2), other diseases such as porcine reproductive and respiratory syndrome (PRRS), salmonella and influenza are usually part of any PCVAD outbreak, said John Kolb, senior manager for swine biologicals with Boehringer Ingelheim.
Kolb worked with ISU researcher Kent Schwartz on the Monitoring Assignment for Global Insight of Circovirus (MAGIC) study.

About 60 farms were surveyed throughout 2006, he noted.
“About 72 percent of the pigs with PCVAD were infected with PRRS, while 58 percent had salmonella, 30 percent had influenza and 20 percent had mycoplasma,” he said. “The key appears to be the diseases that are present with the PCV2.”

Kolb said farms with at least twice the normal mortality were surveyed, adding they were located throughout the United States.
The MAGIC project also included herd-case information and animal diagnostics, including extensive serum and tissue sampling, and post-mortem examinations.
All samples were evaluated by ISU's Veterinary Diagnostic Laboratory.
“PRRS was really the big one. It is explosive in terms of a high-mortality rate in both the lab and the field,” Kolb said. “We saw a very good response in a live vaccine at least four weeks ahead of exposure. I would caution producers not to forget about PRRS because it appears to be the key driver in PCVAD.”
In one case, Kolb said a producer who had only been marketing 70 percent of the pigs he sent to the finishing barn saw a 10 percent boost when he vaccinated for PRRS and salmonella.
When he also vaccinated for PCV2, he was able to market 95 percent of those pigs.
Kolb suggests vaccinating pigs for PCV2 at weaning or at about 3 weeks old. Vaccination not only benefits herd health but also weight gain, he added.
He cited an ISU study that showed PCV2-infected pigs that were vaccinated for PRRS had a significantly higher average daily gain and fewer lung lesions over animals not vaccinated for PRRS.
Kolb said it's important for producers to work together with their veterinarians to come up with a solution.
“If you suspect something, get your veterinarian out to check them out and get the information to the lab,” he said. “Don't wait too long.”
Three vaccines for PCV2 are available, Kolb added.
gThe amount of vaccine we have right now makes it hard to keep up with demand,” he said. “It should become more available in the near future.”

Source : http://www.tristateneighbor.com/articles/2007

貴哥

落英文耶........

效益如何?對疫苗公司肯定贊.....因為不便宜
現場的效益........聽有使用過的場只有兩種反應.......沒感覺&滲尿換滲屎

gtc

個人經驗 88.12   89.01
L  X   L
小女豬 離乳當天(30天)  PRRS  VAC
觀察至 第一產 離乳後   5日配上率
都優於 未 prrs vac  組

Tiger

貴哥您形容得真貼切阿~
:102 :102 :102

病毒性疫苗省不得...
但是台灣目前最不能省得應該只有HC跟PR吧?!

FOLIN

原帖由 貴哥 於 2008-7-17 22:54 發表
落英文耶........

效益如何?對疫苗公司肯定贊.....因為不便宜
現場的效益........聽有使用過的場只有兩種反應.......沒感覺&滲尿換滲屎

這樣我怎麼敢打下去= =
本來打算要打的....難道我那小小的場也要搞實驗組阿

蘇少儀

介紹精確又實用的評估方法
打週號(將記事本拿出來標上各週的週別，一年52週)，配合週批次管理制
(如果一段時間內需要追蹤到該週的那一胎(母豬)，可以左耳打週(批)次(52週可用)�右耳打該週(批)的胎次(99胎可用))．
這樣豬是那一週齡(批次)死亡或淘汰(如果加上週胎次，甚至可以追蹤到母豬同胎)，不用查資料，馬上知道．育成率多少，清清楚楚．(每週用不同的疫苗或藥品處理，和對照組比一下，那些疫苗或藥品的效果就普普可知，不用在網路上爭來爭去)．
如果不知道基本的耳號打法(1/9/3)，那應該先參加畜試所或屏科大的養豬班學起．
你就知道什麼產品有用，什麼產品沒有用了......................................

[ 本帖最後由 蘇少儀 於 2009-7-29 04:44 編輯 ]

KenYu

在有需要得時候, 商品化的疫苗肯定有其效果. 以下是摘自張靖男教授的文章 (台灣豬病的變遷與防治方法之更迭及建議, 中化藥訊第71期)供大家參考並敬請指教,謝謝~

在此特別要提到的是二十年前的時代，死菌疫苗，例如沙氏桿菌、敗血大腸菌疫苗等效果極為良好；病毒方面，不論死毒假性狂犬病疫苗或豬生殖與呼吸道綜合症臟器疫苗，效果亦能立竿見影。可是到後來我們發現，這些疫苗最後都慢慢式微，效果極差甚至已完全失效。考其原因，發現以前台灣所無的傳染病，不論是放線桿菌胸膜肺炎、頑固型沙氏桿菌症、敗血型大腸桿菌症、假性狂犬病、口蹄疫、豬生殖與呼吸道綜合症、環狀病毒第二型感染症等，初次侵入時都像颳颱風一樣攻勢凌厲，豬隻多呈急性甚至超急性症狀，罹患率與死亡率均極高，此時使用死菌、死毒疫苗均能顯現卓越效果。然而過了一段時間，疾病就會轉型，由急性轉為慢性、或成為不顯性，看來似乎銷聲匿跡，其實已進駐於豬群，潛伏存在各齡豬體中，此時死毒疫苗已難再發揮功效。這些潛伏的病原有的會干擾免疫系統，使豬隻免疫能力大受影響，有的會不時地冒出來感染，但症狀已不再典型。如要用疫苗對付這些傳染病，只能使用弱毒活苗了。根據使用經驗，基因缺損弱毒沙氏桿菌疫苗及弱毒豬生殖與呼吸道綜合症等活苗效果相當良好。

蘇少儀

任何事務應知其精微之處，不是炒大鍋飯．
能類比的再類比
不能類比的，做類比就有點"不倫不類"
養豬業者都在用心學習，賣藥的還"稀理嘩啦"
任何人，任何事都無法一步到位，重要的是"心"．日益精進的"心"
不過一種米養百樣人，參考參考...............................

[ 本帖最後由 蘇少儀 於 2009-7-29 21:28 編輯 ]