Utilization of Corn Gluten Meal as a Protein Source in Diets for Gilthead Sea Bream (Sparus aurata L.) Juveniles. Journal of FisheriesSciences.com, 6(1):63-73.


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YİĞİT M. , BULUT M. , ERGÜN S. , Guroy D., Karga M., Kesbic O. S. , ...More

Journal of FisheriesSciences.com, vol.6, no.1, pp.63-73, 2012 (International Refereed University Journal)

  • Publication Type: Article / Article
  • Volume: 6 Issue: 1
  • Publication Date: 2012
  • Title of Journal : Journal of FisheriesSciences.com
  • Page Numbers: pp.63-73

Abstract

The utilization of corn gluten meal (CGM) was evaluated as a partial fish meal (FM) substitute in practical diets for gilthead sea bream juveniles. Four test diets (isonitrogenous and isoca-loric, 52% protein and 10% lipid, 19 kJ/g diet) containing increasing levels of CGM were for-mulated to replace anchovy meal at levels of 0%, 10%, 20%, and 30%. Triplicate groups of ju-venile sea bream (initial body weight of 1.5 g) were reared in a Recirculating Aquaculture System (RAS) over 45 days at 18±2°C. Fish fed a diet containing 10% of CGM showed com-parable growth performance similar to the control diet containing FM as the sole protein source. No mortality was observed in all treatment groups. Dietary CGM inclusion levels of 20% and 30% showed lower growth performance, feed utilization, and protein efficiency com-pared to the control and the 10% CGM inclusion diets. However these values were not signifi-cantly different among fish fed the CGM10 and CGM20 diets. Economical analyses also con-firmed the growth related experimental results in terms of best profit obtained with the 10% CGM inclusion diet. Results in the present study showed that CGM alone without any amino acid supplements can substitute FM up to 10% with no adverse effects on growth performance, feed utilization, or economical inputs in gilthead sea bream juveniles.