Modeling EAA requirement and developing low fishmeal diet for yellow perch
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Overall, my dissertation research sought to enhance production of yellow perch by developing a low cost, complete diet for juvenile yellow perch by determining: the digestibility of commonly-used feedstuffs; dietary lysine requirements (digestible basis) for yellow perch; dietary amino acids requirement modeling by perch body AA composition profile; and the capacity to use poultry byproduct meal to replace fish meal with balanced amino acids profile. Chapters 3 through 6 document the multiple experiments that were carried out to develop a low cost, complete diet for juvenile yellow perch. Chapter 3 describes the digestibility study of various feedstuffs for yellow perch. Using the digestibility values from chapter 3, chapter 4 researches on the dietary lysine requirement for yellow perch based upon a digestibility level. Chapter 5 explains the modeling amino acids requirement for yellow perch based upon feedstuffs' digestibility, lysine requirement and body AA composition. Chapter 6 describes a fish meal replacement experiment using the ideal protein concept in juvenile yellow perch. Our researches find out yellow perch had a high crude protein and amino acids digestibilities on various feedstuffs, the dietary lysine requirement was determined at 1.33% of dry diet basis, and fish meal could be replaced up to 50% by poultry byproduct meal based on growth performance in yellow perch diet.
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