Tail Muscle Free Amino Acid Concentration of Pacific White Shrimp,Litopenaeus vannamei,Fed Diets Containing Protein‐bound versus Crystalline Amino Acids |
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| Authors: | Joe M. Fox Addison L. Lawrence Eunice Li‐Chan |
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| Affiliation: | 1. Texas AgriLife Research, 1300 Port Street, Port Aransas, Texas 78373 USA;2. Shrimp Mariculture Project, Texas Agricultural Experiment Station, 1300 Port Street, Port Aransas, Texas 78373 USA;3. Department of Food Science, The University of British Columbia, Vancouver, British Columbia Canada V6T 1W5 |
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| Abstract: | Tail muscle tissue free amino acids (FAA) concentration is reported for subadult (4.3 g) Litopenaeus vannamei fed diets containing only protein‐bound amino acids, crystalline lysine as a supplement to protein‐bound lysine, and only crystalline amino acids (CAA). FAA were determined in shrimp at 0.00, 0.25, 0.5, 1, 2, 4, and 8 h postfeeding. Highest total tissue concentrations of essential amino acids and individual amino acids were typically observed 4 h postfeeding for shrimp fed intact and crystalline lysine‐supplemented feeds. Those shrimp offered diets containing only CAA showed no tissue maxima. Similar uptake patterns for lysine shown by shrimp fed the intact and crystalline lysine‐supplemented diet indicate the potential use of small amounts of crystalline lysine in shrimp feeds. |
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