Title: Adding Value to Animal Protein Ingredients while Meeting the Needs of the Worldwide Aquaculture Industry

Principle Investigator: Dominique P Bureau

Year: 2008

Objective: A) Overall Objectives

The overall objective of this project is to achieve a better characterization of the nutritive value of rendered animal protein ingredients currently produced in North America and add value to these ingredients by improving their nutritive value and suitability for various aquatic species cultured around the world.

B) Specific Objective (As per the Original Proposal)

1) Proceed with the fine characterization of the nutritional composition of different types of rendered animal protein ingredients with emphasis on minor nutrients and to contrast the composition of these ingredients with what is currently known about nutrient requirement of aquatic species cultured worldwide

2) Evaluate the potential of various relatively simple (cost-effective) processing techniques (air classification, incubation) to improve digestibility and availability of nutrients in rendered animal protein ingredients.

3) Develop and evaluate high digestible nutrient density (high protein, low ash) “low pollution” animal protein ingredients for use in high value feeds for marine “carnivorous” fish species (Atlantic salmon, white sea bass), derived from poultry, porcine or ruminant raw material (to respect different market requirements).

4) Develop and evaluate lower economical value of high ash animal proteins (e.g. bone fraction from air-classification of conventional meat and bone meal or poultry by-products meal) as cost-effective sources of phosphorus, micro-minerals, phospholipids, and cholesterol for warm water gastric aquatic species (Nile tilapia, shrimp) and agastric species (e.g. carps) species widely cultured in Asia and Latin America.

5) Explore the potential of various feed additives and simple processing techniques to improve the digestibility of phosphorus and other minerals in high ash animal proteins fed to agastic fish species (carps) widely cultured in Asia and of high nutrient density animal protein ingredients fed to marine carnivorous fish species.

6) Modify and validate an existing phosphorus digestibility model developed for salmonid fish (Hua and Bureau, 2006) to various fish species cultured around the world, notably those widely cultured in Asia and Latin America.

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