Trout Production: Feeds and Feeding Methods

Published: December 16, 2008

Summary

In trout farming, the amount and suitability of feed used determines the profitability of production. Trout and other salmonids can efficiently digest foods that contain primarily protein (mostly from fish), and can obtain some of their energy from fats and, to a lesser extent, from carbohydrates. Fry and fingerling trout require a higher protein and energy content in their diets than larger fish...

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#Fish feed and nutrition

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Dr. Justin Tan Yu-Wen

Meriden Animal Health Limited

4 de junio de 2009

Commercial production of trout can easily be improved with the use of oregano essential oils in trout feed. A commercial trial was conducted by a reputable international aqua feed producer from Denmark that produces rainbow trout feed.

Rainbow trout (Oncorhynchus mykiss) were fed with either standard control feed or a similar feed containing Orego-Stim® Aquatract at 550 ppm. The length of the trial was 49 days and the fish were reared in a Danish trout farm using a flow-through system, with average water temperatures of 9.4 °C.

Results revealed that trout fed with feed containing Orego-Stim® Aquatract showed improvements in average weight gain by 9.4[percent], total weight gain by 14.9[percent] and feed efficiency by 3.2[percent].

This ultimately resulted in a Return-On-Investment (ROI) ratio of 8.6 : 1, which meant that for every €1 spent on Orego-Stim® Aquatract, producers gained an additional profit of €8.60 in return on top of usual profits, due to the additional increase in liveweight gain.

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