The use of acidifiers in fisheries and aquaculture
In the field of aquaculture it is well established so far that the inclusion of antibiotics into the diets of fish (Ahmad and Matty, 1989) can promote growth and feed conversion.
However recently, growing awareness from consumers and producers of aquaculture species has resulted in calls for responsible and sustainable aquaculture, also in the much debated shrimp production in South East Asia (Verbeeke, 2001; Feedinfo, 2005). Public opinion and regulation authorities in most export countries focus now on the misuse of antibiotics in aquaculture and public attention has shifted towards production methods (Lückstädt, 2005).
Furthermore, the EU has banned all antibiotic growth promoters (AGP) from livestock production with effect of January 2006, since the use of low levels of these antibiotics in animal feeds possesses the possibility to transfer bacterial immunity to species pathogenic in animals and humans (Liem, 2004).
Due to the above mentioned facts however, alternatives needed to be found.
Several feed additives, including acidifier consisting of organic acids and their salts may be a promising alternative for the use of in-feed antibiotics in aquaculture.
In animal nutrition organic acidifier and their salts exert their performance promotion effects via three different ways, as currently reviewed by Freitag (2006): in the feed, in the gastro-intestinal tract and due to effects onto the metabolism of the animal (table 1).
See more at http://forum.efeedlink.com/contents/11-27-2007/4cecfd46-fd81-41e9-8b86-b7c1112bd30f-a001.html