2017
Development of Digestibility Matrix for SBM in Pacific White Shrimp
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Contributor/Checkoff:
Soy Aquaculture Alliance
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:
1730-352-0505
Contributing Organization (Checkoff):
United Soybean Board
$65,646
Institution Funded:
Auburn University
$65,646
Brief Project Summary:

Two growth trials compared the biological value of L. vannamei offered high soy feed formulations. The growth response was not as different as expected, but there were clear differences. The strongest correlation between growth and the feed formulations was phosphorus and phytate, with the level of phytate being the driver, as it affects both mineral and protein availability. Raffinos was also weekly correlated with the growth response. Another goal of this project was to identify soy crushers that utilize soy from multiple countries of origin and obtain samples for chemical analysis and biological testing.

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

Information And Results
Final Project Results

Updated December 3, 2019:

View uploaded report Word file

Two growth trials were completed that compared the biological value (growth response) of L. vannamei offered high soy feed formulations. The growth response was not as different as expected; however, there were clear difference. As in previous project we used principle component analysis and standardization techniques to correlate a response of growth to characteristics of the meals. In this case the strongest correlation was to phosphorus and phytate. As both are correlated it is probably the level of phytate that is the driver as this will effect both mineral and protein availability. Raffinos was also weekly correlated with the growth response which is logical and supported by other research. One theory for the limited response is that the meals were source with to similar a composition. Using both cluster analysis and principle component analysis we looked at how related the meals were and identified two major groups and three sources that acted differently. There is no clear association of one group or the other with performance. Although, the data on digestibility is not reliable, there were considerable difference between samples. Hopefully with revised data we may see better trends. A master of science thesis will be developed around the data and we will continue to work with more advanced statistics to help identify drivers of the growth response.

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.