Use of Corn-Derived Ethanol Coproducts and Synthetic Lysine and Tryptophan for Growth of Tilapia (Oreochromis niloticus) Fry

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• 作者：Y. Victor Wu ; Ronald R. Rosati ; and Paul B. Brown
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：1997
• 出版时间：June 1997
• 年：1997
• 卷：45
• 期：6
• 页码：2174 - 2177
• 全文大小：57K
• 年卷期：v.45,no.6(June 1997)
• ISSN：1520-5118

文摘

Corn gluten meal, corn gluten feed, and corn distillers' grains withsolubles, the coproducts fromethanol fermentation of corn, were incorporated in tilapia diets with32 and 28% protein. The dietswere balanced in amino acid composition by addition of soy flour and/orsynthetic lysine andtryptophan. The diets were fed to tilapia fry of average initialweight of 0.5 g in aquaria for 8weeks. Weight gain expressed as percentage increase after 56 dayswere best (P < 0.05) for a 28%protein diet with 67% corn gluten feed and 26% soy flour, a 32%protein diet with 54% corn glutenfeed and 39% soy flour, and the control diet with 32% protein.Weight gain was positively correlatedwith protein content, lysine/protein, and protein/energy. Fish fed32% protein diets exhibited thesame feed conversion ratio and protein efficiency ratio (P> 0.05) as the control 32% protein diet.Fish fed 28% protein diet with 82% corn distillers' grains withsolubles and synthetic lysine andtryptophan and 28% protein diet with 67% corn gluten feed and 26%soy flour also resulted in thesame feed conversion ratio and protein efficiency ratio (P> 0.05) as the control diet. Fish fed theremaining two 28% protein diets exhibited higher feed conversion ratioand lower protein efficiencyratio (P < 0.05) than fish fed the control diet. Itappears the 28% protein diet with 67% corn glutenfeed and 26% soy flour is adequate for tilapia fry based on weightgain, feed conversion ratio, andprotein efficiency ratio.Keywords: Tilapia; corn gluten meal; corn gluten feed; corn distillers'grains with solubles; syntheticamino acids; weight gain; feed conversion ratio; protein efficiencyratio