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養殖魚類投餵水產益健飼料之細菌性病原調查

  • 日期:112-04-17
  • 計畫編號:112農科-1.6.7-水-A1(4)
  • 年度:2023
  • 領域:漁業科技研發
  • 主持人: 劉姵妏
  • 研究人員:黃美瑩、陳建彰、謝豐群

近年來因氣候變遷,氣溫及水質的劇變容易造成魚蝦緊迫,且高水溫有利於病原孳 生,甚至造成嚴重疾病。研究顯示,利用益生菌可以改善水質,增加營養吸收,減 低病原菌感染的風險,調節魚蝦的免疫。目前市面上益生菌種類繁多,但部分益生 菌怕熱,無法添加於水產飼料製程,因此市售水產飼料含有益生菌者非常少。再者 雖然水產業者大都肯定益生菌之功效,也有業者應用益生菌於養殖現場,但幾乎都 是自行添加益生菌於飼料後再投餵魚蝦,不僅費時費工,且無法確定益生菌活性。 故本研究利用本所研發含有B. pumilus D5之益健飼料應用於鱸魚與吳郭魚養殖,針 對試驗魚種主要病原與益生菌B. pumilus D5能抑制之病原為監測標的,配合益健飼 料安全管理技術之輔導機制下,比較投餵益健飼料後對鱸魚與吳郭魚主要細菌性病 原之影響,並進行病原菌之藥物敏感性試驗,比較投餵益健飼料後對抗藥性之影響 ,同時進行益健飼料益生菌活性評估,將結果提供給養殖戶參考。

研究報告摘要(英)


Climate change causes fish and shellfish stress and the rising water temperature makes bacterial pathogens grow easily sometimes they lead to severe disease. A lots studies show that probiotics can improve water quality, nutrient absorption, reducing pathogen infection, regulate immune functions but it's difficult to add robotic into aquatic feed due to the high temperature during the manufacturing process. Nowadays, there are many kinds of probiotics applied to the aquacultere industry, while commercial aquatic feed including probiotics is rare. The farmers still add probiotic to feed manually because of the positive functions. However, the way of adding probiotics to fish feed is time-consuming and labor-costing, meanwhile the qualities of probiotics farmers used are unverified. Therefore, this research is going to apply the healthy feeds which is developed by our institute with probiotic Bacillus pumilus D5 to bass and tilapia, we regularly detect the target bacterial pathogen's quantities to verify the healthy feed's inhibition, meanwhile we measure the antibiotic resistances of pathogens after feeding to fish and count the Bacillus pumilus D5 in healthy feed to make sure the proper storage period.