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July 28, 2013

Southeast Asia

Use of Veterinary Medicines, Feed Additives and Probiotics in Four Major Internationally Traded Aquaculture Species Farmed in Asia


From Abstract: Antimicrobials, parasiticides, feed additives and probiotics are used in Asian aquaculture to improve the health status of farmed aquatic animals and to prevent or treat disease outbreaks.  Detailed information on the their use in Asian aquaculture is limited.  This study reports on a survey on the use of chemical and biological products on 252 aquaculture farms and the sale of these products from 56 farm supply shops in four countries in Asia.  The survey was conducted between 2011 and 2012 and included nine aquaculture farm groups: penaeid shrimp farms in Bangladesh, China, Thailand and Vietnam; freshwater prawn and shrimp farms in Bangladesh; tilapia farms in China and Thailand; and pangasius farms in Vietnam.


Results were analyzed on the frequencies of use of active ingredients and chemical classes, reported dosages and applied volume relative to production.  A range of farm management and farm characteristics were used as independent variables to explain observed chemical use patterns reported by farmers within each group.  Sixty different veterinary medicinal ingredients were recorded (26 antibiotics, 19 disinfectants, and 15 parasiticides). Semi-intensive and intensive shrimp farms in China, Thailand and Vietnam showed a decrease in the use of antibiotic treatments, but these farm groups utilized the largest amount of chemicals relative to production.  Feed additives and plant extracts, probiotics and disinfectants were the most used chemical classes, mainly for disease prevention.


The surveyed farmers generally did not exceed recommended dosages of veterinary medicines, and nationally or internationally banned compounds were (with one exception) not reported by the surveyed farmers or by the chemical sellers.  Factors underlying the observed differences in chemical use patterns differed widely amongst farm groups, and geographical location was found to be the only factor influencing chemical ingredient application patterns in the majority of the studied farm groups.


Source: Aquaculture.  Use of Veterinary Medicines, Feed Additives and Probiotics in Four Major Internationally Traded Aquaculture Species Farmed in Asia.  Andreu Rico (email, Department of Aquatic Ecology and Water Quality Management, Wageningen University, Wageningen University and Research Centre, P.O. Box 47, 6700 AA Wageningen, The Netherlands), Tran Minh Phu, Kriengkrai Satapornvanit, Jiang Min, A.M. Shahabuddin, Patrik J.G. Henriksson, Francis J. Murray, David C. Little, Anders Dalsgaard and Paul J. Van den Brink.  In Press, Accepted for Publication.  Available Online of July 24, 2013.


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