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A study was conducted to determine the effect of increasing dietary levels of fish oil on vitamin E requirement and their effect on growth performance, liver vitamin E status, and tissue proximate and fatty acid compositions of channel catfish. Basal purified diets (42% protein and 3,800 kcal DE/kg) supplemented with 6, 10, and 14% menhaden fish oil were(More)
A study was conducted to examine the effect of dietary levels of distiller's dried grains with solubles 40% DDGS with supplemental lysine (Diets 1–5) as partial replacements of a combination of soybean meal and cornmeal on an equal protein basis were fed to juvenile catfish (13.33 6 0.25 g) for 12 wk. Growth performance and feed utilization efficiency were(More)
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Nine egg-white-based diets supplemented with three levels of vitamin C from L-ascorbyl-2Ž . polyphosphate 0, 50 and 3000 mgrkg for each of the three levels of iron from iron methionine Ž . 0, 30 and 300 mgrkg were each fed to juvenile channel catfish in triplicate aquaria twice daily to apparent satiation for 14 weeks. Fish fed with iron-deficient diets had(More)
Mozambique tilapia, (Oreochromis mossambicus), are a euryhaline teleost and an important biological model species. Captive male tilapia frequently have high levels of the estrogen-induced yolk precursor protein vitellogenin (Vg), a common indicator of exposure to estrogenic compounds. Sex steroids are found in commercial fish diets, but relatively few(More)
Distillers dried grains with solubles (DDGS), a co-product of the dry-mill ethanol industry, are the dried residue that remains after the fermentation of corn (or other grains) mash by selected yeasts and enzymes to produce ethanol and carbon dioxide. The nutrient composition of DDGS varies depending on the source of grain and the methods used for ethanol(More)
Juvenile Nile tilapia (Oreochromis niloticus) were fed with diets supplemented with 0 or 6% NaCl for 10 weeks. Tilapia were exposed to approximately 21 mg/l nitrite-N after 5 and 10 weeks of feeding to determine the effect of dietary NaCl supplementation on resistance to nitrite toxicity. Fish were sampled before (baseline, pre-exposure) and after 24 h(More)
The ACRSP Twelfth Work Plan, published in Fall 2005, described a standardized set of experiments to be undertaken by the Aquaculture Collaborative Research Support Program through July 2006, the end of the current grant period. Subsequently, USAID has provided the necessary funds to continue ongoing research and outreach activities for two additional years.(More)
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