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A laboratory feeding trial was conducted for 80 days using rohu, Labeo rohita, fingerlings (5.67 ±0.25 g) to evaluate the optimum dietary carbohydrate level. Five semipurified diets containing 30, 35, 40, 45, and 50% carbohydrate (diets D1 to D5) were formulated and fed to triplicate groups of fish. All the diets were isonitrogenous (35% protein) and almost isocaloric. Fish performance in terms of...
The apparent digestibility of both raw and treated (fermented) sesame (Seasamum indicum) seed meal by rohu, Labeo rohita, fingerlings was evaluated at 20, 30, and 40% levels of incorporation for each, using fishmeal based feed as the reference diet. The anti-nutritional factor, phytic acid, from raw sesame seed meal, could be reduced below detection limit by fermentation with lactic acid bacteria...
A 60-day feeding experiment was conducted in the laboratory to evaluate the interactive effects of dietary protein and carbohydrate levels on growth, feed utilization efficiency, and nitrogen metabolism in rohu, Labeo rohita fingerlings (mean weight 4.06 ±0.08 g). Nine purified diets prepared with 25, 35, and 40 % protein level each having 15, 25, and 35 % carbohydrate were fed to nine different feeding...
Background. Linseed and its by-products constitute a major source of dietary protein, but due to amino-acid imbalance and presence of anti-nutritional factors their use in fish feed is limited. Therefore, fermentation of linseed by lactic acid bacteria and/or fermented diets increases the level of linseed inclusion into the diet of rohu fingerlings by up to 40 percentage points. Materials and Methods...
Background. Dietary carbohydrate use is a priority in aquaculture because of its low cost and high availability, especially for herbivorous and omnivorous fish. Gelatinization is a process that improves carbohydrate use. However, excess dietary carbohydrate may cause metabolic stress and cellular changes as fish inherently use low carbohydrate. The aim of this study was to determine the effects of...
Background. Yeast extract powder (YEP) is a rich source of several B vitamins and is used mainly in bacterial culture. In the present study, the effect of dietary supplementation of YEP on growth, feed conversion, nutrient ADC, body composition, and digestive enzyme profile of rohu, Labeo rohita (Hamilton, 1822) fingerlings was evaluated. Materials and Methods. Rohu fingerlings (mean individual weight...
Background. Our previous study has shown that four aquatic weeds viz. Asian watermoss, Salvinia cucullata; water spinach Ipomoea reptans; water chestnut, Trapa natans; and lesser duckweed, Lemna minor from north-east India are important sources of proteins, vitamins and minerals, suitable for incorporation in fish diet. The aim of the present study was to compare the efficacy of these aquatic weeds...
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