Effects of Dietary Lipids, Dietary Protein and Environmental Temperatures on Growth, Feed Conversion and Body Composition of Channel Catfish
- 1 February 1977
- journal article
- research article
- Published by Elsevier in Journal of Nutrition
- Vol. 107 (2), 272-280
- https://doi.org/10.1093/jn/107.2.272
Abstract
Studies were conducted to determine the effects of several lipid supplements in practical-type diets for channel catfish (Ictalurus punctatus) fingerlings reared at 23° and 28°. Maximum growth and feed efficiency were obtained when diets were supplemented with 9% animal tallow, 9% menhaden oil or a combination of the two (4.5% of each). A growth suppression was observed when fish were fed a diet containing a combination of 3% corn oil, 3% animal tallow and 3% menhaden oil. In studies on interactions of dietary protein and lipid at 23° and 28°, increasing dietary protein from 25% to 35% resulted in higher gains. At 28°, increasing dietary lipid from 5% to 12% resulted in increased gains with diets containing 35% protein but not with diets containing 25% protein. At 23°, 5% lipid was sufficient in all cases. Carcass lipid levels increased with increasing temperature and were positively correlated with weight gains and negatively correlated with carcass moisture content. Improved protein conversion (protein fed:protein gained) was noted when dietary protein levels were increased from 25% to 35%; when dietary lipid levels were increased from 5% to 12%; and when environmental temperature was increased from 23° to 28°.Keywords
This publication has 19 references indexed in Scilit:
- The Response of Rainbow Trout to Varying Protein/Energy Ratios in a Test DietJournal of Nutrition, 1973
- Effect of dietary linolenic acid and docosahexaenoic acid on growth and fatty acid composition of rainbow trout (Salmo gairdneri)Lipids, 1972
- Effects of Dietary Lipids on Growth, Food Conversion, Lipid and Fatty Acid Composition of Channel CatfishJournal of Nutrition, 1972
- Essential Fatty Acids in the Diet of Rainbow Trout (Salmo gairdneri): Growth, Feed Conversion and Some Gross Deficiency SymptomsJournal of Nutrition, 1972
- Interactions of Stocking Density and Water Turnover on Growth and Food Conversion of Channel Catfish Reared in Intensively Stocked TanksThe Progressive Fish-Culturist, 1971
- Calorie-to-Protein Ratio for Brook Trout (Salvelinus fontinalis)Journal of the Fisheries Research Board of Canada, 1971
- Interactions in the metabolism of polyunsaturated fatty acids in the coho salmon, Oncorhynchus kisutch (Walbaum)International Journal of Biochemistry, 1971
- EFFECT OF ETHYL LINOLEATE, ETHYL LINOLENATE AND ETHYL ESTERS OF HIGHLY UNSATURATED FATTY ACIDS ON ESSENTIAL FATTY ACID DEFICIENCY IN RAINBOW TROUTTHE JOURNAL OF VITAMINOLOGY, 1966
- The influence of dietary fatty acids and environmental temperature on the fatty acid composition of teleost fishJournal of Oil & Fat Industries, 1963
- Multiple Range and Multiple F TestsBiometrics, 1955