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Amino acid requirement of rainbow trout ( Oncorhynchus mykiss ) I. Development of the test diet

Amino acid requirement of rainbow trout ( Oncorhynchus mykiss ) I. Development of the test diet By M. RODEHUTSCORD~, PACK', S. JACOBS' and E. PFEFFER' M. 'Znstitutfur Tierernahrung, Endenicher Allee 11, D-13115 Bonn, Germany; 2DegussaAG, Applied Technology Feed Additives, PO Box 1341,D-63403 Hanau, Germany Recommended amino acid supplies for trout are mostly derived from studies using fingerlings. The objective of our experiments was to estimate the amino acid requirement of trout between 50 and 2OOg body mass employing dose-response experiments. The first step was to develop a test diet which ideally can be characterisized by: (a) giving comparable performances to practical type diets; (b) using well standardized components; and (c) enabling a specific deficiency for each essential amino acid to be determined. Numerous studies published in the literature did not cover all these salient points. In search of a test diet which may fill the gap, three consecutive trials (A, B and C) were carried out in a recirculation system. Groups of 20 trout each were kept in round plastic tanks (250 1, each treatment 4 replicates; temperature 15.5-17.5 "C; initial body mass 46-55 8). Diets were prepared as moist pellets of about 4 mm diameter and frozen until feeding. Feed was offered twice a day (to satiation to avoid feed losses). Weight gain http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Ichthyology Wiley

Amino acid requirement of rainbow trout ( Oncorhynchus mykiss ) I. Development of the test diet

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Publisher
Wiley
Copyright
Copyright © 1995 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0175-8659
eISSN
1439-0426
DOI
10.1111/j.1439-0426.1995.tb00047.x
Publisher site
See Article on Publisher Site

Abstract

By M. RODEHUTSCORD~, PACK', S. JACOBS' and E. PFEFFER' M. 'Znstitutfur Tierernahrung, Endenicher Allee 11, D-13115 Bonn, Germany; 2DegussaAG, Applied Technology Feed Additives, PO Box 1341,D-63403 Hanau, Germany Recommended amino acid supplies for trout are mostly derived from studies using fingerlings. The objective of our experiments was to estimate the amino acid requirement of trout between 50 and 2OOg body mass employing dose-response experiments. The first step was to develop a test diet which ideally can be characterisized by: (a) giving comparable performances to practical type diets; (b) using well standardized components; and (c) enabling a specific deficiency for each essential amino acid to be determined. Numerous studies published in the literature did not cover all these salient points. In search of a test diet which may fill the gap, three consecutive trials (A, B and C) were carried out in a recirculation system. Groups of 20 trout each were kept in round plastic tanks (250 1, each treatment 4 replicates; temperature 15.5-17.5 "C; initial body mass 46-55 8). Diets were prepared as moist pellets of about 4 mm diameter and frozen until feeding. Feed was offered twice a day (to satiation to avoid feed losses). Weight gain

Journal

Journal of Applied Ichthyology – Wiley

Published: Dec 1, 1995

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