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March 25, 2014

United States

Arkansas—Corn Protein Concentrate in Shrimp Feeds

 

Corn protein concentrate (CPC) is the dried protein fraction of corn primarily originating from the endosperm after removal of the majority of the non-protein components by enzymatic solubilization of the protein stream obtained from the wet-mill process.  CPC (Empyreal 75, Cargill Corn Milling, Cargill, Inc., Blair, Nebraska, USA), used in the present study, is high in protein (79.7%) and is a rich source of methionine (1.77%).

 

To evaluate the potential of corn protein concentrate under commercial conditions, four diets were manufactured by Rangen, Inc.  (Angleton, TX, USA) as a sinking 3-mm extruded pellet.  Diets contained approximately 36% protein and 10% lipid.  The basal diet was designed to contain 15% fish meal that was replaced with graded levels of CPC (0, 4, 8 and 12%).

 

The results demonstrate that the use of alternative plant proteins such as CPC helped to reduce feed cost without significantly reducing yield, therefore reducing overall production costs.  Hence, the use of CPC, a protein-rich ingredient having high levels of methionine, should be encouraged as an alternative protein source in commercial shrimp feed formulations.

 

Source: Aquafeed.comAQUAFEED (a quarterly, e-magazine that covers advances in feed formulation and processing).  Editor, Suzi Fraser Dominy (editor@aquafeed.com).  Corn Protein Concentrate: a Cost-Effective Replacement for Fish Meal in Shrimp Diets.  Melanie Rhodes, Denghang Yu, Yangen Zhou, Luke A. Roy, Terrill R. Hanson and D. Allen Davis (email davisda@auburn.ed, School of Fisheries Aquaculture and Aquatic Sciences, Auburn University, Alabama 36849, USA.  Issue 1, Volume 6, Spring 2014.

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