Affiliation:
1. Department of Animal Science, Texas A&M University , College Station, TX 77843 , USA
Abstract
Abstract
We recently reported that supplementing glycine to soybean meal (SBM)-based diets is necessary for optimum growth of 5- to 40-g (phase I) hybrid striped bass (HSB). The present study tested the hypothesis that supplementing glycine to SBM-based diets may enhance the growth of 110- to 240-g (phase II) HSB. HSB (the initial body weight of approximately 110 g) were fed an SBM (58%)-based diet supplemented with 0%, 1%, or 2% of glycine, with l-alanine serving as the isonitrogenous control. There were four tanks per dietary group, with four fish per tank. The fish were fed their respective diets to apparent satiation twice daily. The feed intake and body weight of fish were recorded daily and every 2 wk, respectively. At the end of the 56-d feeding trial, plasma and tissue samples were collected to determine amino acid concentrations and histological alterations, and tissues were used to measure the oxidation of l-glutamate, l-glutamine, l-aspartate, and glycine. Results showed that dietary supplementation with 1% and 2% glycine dose-dependently increased (P < 0.05) the concentration of glycine in the plasma of HSB by 48% and 99%, respectively. Compared with the 0%-glycine group, dietary supplementation with 1% glycine did not affect (P > 0.05) the feed intake of HSB but increased (P < 0.05) their final body weight, weight gain, and gain:feed ratio during the whole period by 13%, 29%, and 21%, respectively. Compared with the 1% glycine group, dietary supplementation with 2% glycine increased (P < 0.05) the feed intake, final body weight, and weight gain of HSB by 13%, 7%, and 14%, respectively. Compared with the 0%-glycine group, fish fed with the 1%-glycine and 2%-glycine diets had a greater (P < 0.05) villus height in the proximal intestine, when compared with the 0%-glycine group. Collectively, these results indicated that SBM-based diets did not provide sufficient glycine for phase II HSB (110 to 240 g) and that dietary glycine supplementation is essential for their optimum growth and intestinal structure.
Publisher
Oxford University Press (OUP)
Subject
Genetics,Animal Science and Zoology,General Medicine,Food Science
Reference61 articles.
1. Effects of dietary glycine supplementation on growth performance, immunological, and erythrocyte antioxidant parameters in common carp, Cyprinus carpio;Abbasi;Animals (Basel),2023
2. The effects of dietary heat-killed probiotics bacteria additives in low-fishmeal feed on growth performance, immune responses, and intestinal morphology in juvenile olive flounder Paralichthys olivaceus;Back;Aquac. Rep.,2020
3. Changes in immune and enzyme histochemical phenotypes of cells of the intestinal mucosa of Atlantic salmon (Salmo salar L) with soybean-meal induced enteritis;Bakke-McKellep;J. Fish Dis.,2000
4. Database of nutrient digestibility’s of traditional and novel feed ingredients for trout and hybrid striped bass;Barrows,2018
5. Comparative oxygen consumption and metabolism of striped bass Morone saxatilis and its hybrid M. chrysops ♀ × M. saxatilis ♂;Brougher;J. World Aquac. Soc.,2005
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