以下信息僅供一般參考和教育用途,並非建議,也非具體行動方案。
The following information is for general informational and educational purposes only and is not to be construed as recommending or advocating any specific course of action.
使用塞內卡病毒(SVA)進行的研究被用來計算「生產日期」(生產日期或加工過程中最後一個潛在汙染點)之後的保存時間,以降解99.99%的潛在病毒汙染(基於病毒半衰期數據)。還需要更多的研究來證實這些結果是否可以外推到其他同類飼料成分的研究中。實施額外的飼料生物安全措施,例如從世界上不流行該病的國家採購和/或在飼料中添加經批准的作為飼料成分的緩和劑,將提高飼料安全信心。
Research using Senecavirus A (SVA) was used to calculate the following holding times after the 「born on date」 (the date of manufacture or the last potential contamination point in processing) to degrade 99.99% of potential viral contamination (based on viral half-life data). More research would be needed to confirm if these results could be extrapolated to other feed ingredients in like classes to those studied. Implementing additional feed biosecurity practices, such as sourcing from FAD-free countries of the world and/ or adding a mitigant approved as a feed ingredient to whole feed, will increase feed safety confidence.
此外,還有關於非洲豬瘟在運輸期間的越洋條件下(平均溫度12.2oC)半衰期的最新信息。如果目標是解決豆粕中潛在的ASF汙染,那麼保存時間需要更長,儘管本實驗使用的溫度與SVA略有不同。
In addition, updated information about African swine fever half-life, under the transoceanic conditions during shipment (average temperature of 54° F), is available. If the objective is to address potential ASF contamination in soybean meal the holding time is longer, although this experiment used slightly different temperatures than those used for SVA.
如果原料以防止進一步汙染的方式運輸,則可能受汙染的原料到美國的運輸時間可包含於「生產日期」後的總保存時間。例如:
The transit time to the United States of the potentially contaminated feed ingredient can be applied to the total holding time after the 「born on date」 if the ingredient is transported in such a way that would prevent further contamination. For example:
維生素D在15°C密封后的總保存時間為26天(或者「生產日期」之後26天),減去運輸時間 14天,就等於進一步保存時間為12天,以滿足「生產日期」後的26天總保存時間。
26 days total holding time for Vitamin D at 59° F after sealing, or the 「born on date」, – 14 days in transit = 12 days further holding time needed to meet the 26 total holding days after the 「born on date.」
與您的飼料供應商交流,並要求所有進口飼料產品的「生產日期」。要了解更多關於病毒半衰期的原始研究,請訪問豬健康信息中心網站www.swinehealth.org/originalfeedholdingtime了解動物飼料成分中SVA的穩定性。另外,在www.swinehealth.org/AFIAbiosecuritypractices網站上可以找到關於飼料和原料生產的生物安全指南。
Talk with your feed suppliers and ask for the 「born on date」 for all imported feed products. To learn more about the original study on viral half-life, see Stability of SVA in animal feed ingredients at www.swinehealth.org/ originalfeedholdingtime on the Swine Health Information Center website. Also, find biosecurity guidelines in Developing Biosecurity Practices for Feed & Ingredient Manufacturing at www.swinehealth.org/AFIAbiosecuritypractices from the American Feed Ingredient Association website.