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Aqua Feeds: Formulation & Beyond Volume 1, Issue 2, 2004
Title:	Re-emergence of Extruded Shrimp Feed
Section:	Technology, pages 18-20
Author & Affiliation:	Dr. George W. Chamberlain Global Aquaculture Alliance St. Louis Missouri, USA
E-mail:	georgec@integra.prserv.net

Web Summary

Extrusion has been used to manufacture shrimp feed since the early 1970’s, but the process has not been widely adopted, due to a persistent tendency for expansion of extruded feeds, which leads to undesirable flotation. Expansion was exacerbated with use of smaller die openings. To minimize flotation, feed manufacturers were forced to limit inclusion levels of starch, which tended to increase raw material costs. These constraints have been virtually eliminated though recent advancements in extrusion technology such as adjustments to the design and speed of the screw, configuration of the die, vacuum venting of the extruder barrel, etc. It is now possible to produce 100% sinking extruded shrimp feeds with density equivalent to pelleted feeds.

In this article, the author explains the rationale and advantages of using extrusion in shrimp feed manufacturing.

This article has 1 figure and 2 tables.

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