2016
Determination of Methionine Requirement and Efficacy of Methionine Supplements for Pacific White Shrimp Reared on Soy Based Diets
Contributor/Checkoff:
Category:
Export/Trade
Keywords:
Aquaculture
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Allen Davis, Auburn University
Co-Principal Investigators:
Project Code:
1640-512-5298
Contributing Organization (Checkoff):
Institution Funded:
Brief Project Summary:

No set methionine requirement for Pacific white shrimp is a major constraint to feed manufacturers accepting soy-based feed formulations. The objective of this research was to support a concerted effort to evaluate the efficacy of several amino acid supplements and attempt to quantify the methionine requirement. Shrimp are semi-continuous feeders and digest foodstuffs very quickly. There is no synchronous absorption of supplemented amino acids based on both absorption and clearance patterns of amino acids. Growth trials were conducted to evaluate the growth response to various methionine sources using a range of supplements.

Key Audience:
Aquaculture nutritionists, aquaculture feed producers, shrimp producers

Information And Results
Project Deliverables

The completed research has demonstrated that the uptake of amino acids in shrimp corresponds to the digestive physiology of the animal. In that, shrimp are semi-continuous feeders that process and digest foodstuffs very quickly. From the initiation of feeding, an upswing in amino acids in the hemolymph was apparent. The clearance of amino acids was also relatively fast with amino acid levels returning to overnight fasting levels within 60 minutes. This cycle of nutrients corresponds to the semi-continuous feeders habits of shrimp. Based on both absorption and clearance patterns of the amino acids, there was no indication of a synchronous absorption of supplemented amino acids.

Final Project Results

Updated February 18, 2021:

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The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.