Effect of Organic Acids on Shrimp Pathogen, <Emphasis Type="Italic">Vibrio harveyi</Emphasis> |
| |
Authors: | Saori?Mine Email author" target="_blank">Raj?BoopathyEmail author |
| |
Institution: | (1) Department of Biological Sciences, Nicholls State University, Thibodaux, LA 70310, USA;(2) Present address: Department of Coastal Sciences, Gulf Coast Research Laboratory, University of Southern Mississippi, Ocean Springs, MS 39564, USA; |
| |
Abstract: | Shrimp farming accounts for more than 40% of the world shrimp production. Luminous vibriosis is a shrimp disease that causes
major economic losses in the shrimp industry as a result of massive shrimp kills due to infection. Some farms in the South
Asia use antibiotics to control Vibrio harveyi, a responsible pathogen for luminous vibriosis. However, the antibiotic-resistant strain was found recently in many shrimp
farms, which makes it necessary to develop alternative pathogen control methods. Short-chain fatty acids are metabolic products
of organisms, and they have been used as food preservatives for a long time. Organic acids are also commonly added in feeds
in animal husbandry, but not in aquaculture. In this study, growth inhibitory effects of short-chain fatty acids, namely formic
acid, acetic acid, propionic acid, and butyric acid, on V. harveyi were investigated. Among four acids, formic acid showed the strongest inhibitory effect followed by acetic acid, propionic
acid, and butyric acid. The minimum inhibitory concentration (MIC) of 0.035% formic acid suppressed growth of V. harveyi. The major inhibitory mechanism seems to be the pH effect of organic acids. The effective concentration 50 (EC50) values at 96 h inoculation for all organic acids were determined to be 0.023, 0.041, 0.03, and 0.066% for formic, acetic,
propionic, and butyric acid, respectively. The laboratory study results are encouraging to formulate shrimp feeds with organic
acids to control vibrio infection in shrimp aquaculture farms. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|