PMID: 9187632Jun 1, 1997Paper

Response of rainbow trout (Oncorhynchus mykiss) to supplements of individual essential amino acids in a semipurified diet, including an estimate of the maintenance requirement for essential amino acids

The Journal of Nutrition
M RodehutscordE Pfeffer

Abstract

We studied the effects of increasing dietary concentrations of each of the following amino acids on growth, feed intake, feed conversion ratio and composition of gain in rainbow trout in six dose-response experiments: L-lysine, L-tryptophan, L-histidine, L-valine, L-leucine and L-isoleucine. Semipurified diets containing 20.1 MJ digestible energy/kg dry matter, with wheat gluten and crystalline amino acids as sole sources of amino acids, were fed to rainbow trout [initial mean body weight (BW) 40-51 g, depending on the amino acid studied]. In one series of 24 diets, lysine concentration ranged from 4.5 to 58.0 g/kg dry matter; in five further series of 12 diets each, concentrations ranged from (in g/kg dry matter): tryptophan, 1.3 to 5.6; histidine, 2.6 to 13.5; valine, 6.2 to 34.2; leucine, 10.0 to 42.0 and isoleucine, 5.0 to 15.3. Each diet was fed to a group of 20 fish for 53-64 d, depending on the amino acid studied. Dry matter intake, weight gain, feed conversion ratio, protein concentration of gain and total protein deposition followed exponential response functions. To achieve 95% of the maximum protein deposition, dietary concentrations of 27.7 g lysine, 2.0 g tryptophan, 5.8 g histidine, 15.7 g valine, 13.6 g leucine a...Continue Reading

References

Dec 1, 1991·The Journal of Nutrition·P S ChooH W Ferguson
Jul 1, 1989·The British Journal of Nutrition·T C Wang, M F Fuller
Jan 1, 1983·Journal of Animal Science·H G Ketola
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Citations

Jun 25, 2020·Animals : an Open Access Journal From MDPI·Genciana TerovaSimona Rimoldi
Aug 13, 2013·Archives of Animal Nutrition·Saskia KroeckelAndreas Susenbeth
Oct 12, 2018·Animal : an International Journal of Animal Bioscience·C TornoC Schulz
Dec 12, 2003·The British Journal of Nutrition·Xavier RollinSadasivam J Kaushik
Feb 17, 2015·The British Journal of Nutrition·Saskia KroeckelAndreas Susenbeth
Jan 14, 2009·The British Journal of Nutrition·Noelie BodinXavier Rollin
Dec 7, 2018·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Beth M Cleveland, Lisa M Radler

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