4.1 Article

Comparative Growth Performance, in vivo Digestibility and Enzyme Activities of Labeo rohita Fed with DORB Based Formulated Diet and Commercial Carp Feed

Journal

TURKISH JOURNAL OF FISHERIES AND AQUATIC SCIENCES
Volume 18, Issue 9, Pages 1025-1036

Publisher

CENTRAL FISHERIES RESEARCH INST
DOI: 10.4194/1303-2712-v18_9_02

Keywords

DORB (de-oiled rice bran); exogenous enzymes; methionine; lysine; essential fatty acids

Funding

  1. Indian Council of Agricultural Research, New Delhi
  2. Vaighai Agro Products Limited, Tamil Nadu

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A 60-day feeding trial was conducted to study the nutrient utilization and growth performance of Labeo rohita fed with T1 [DORB supplemented with phytase and xylanase (0.01% each)], T2 [T1+ L-lysine(1.4%), L-methionine (0.4%), combination of EPA and DHA (0.5%)], T3 [DORB supplemented with phytase (0.01%), combination of xylanase and cellulase (0.075%), L-lysine (1.4 %), L-methionine (0.4 %), combination of EPA and DHA (0.5%)] and T4 (commercially available carp feed) diets. Weight gain%, SGR, and FCR were similar (p>0.05) for the fishes fed with either T3 feed or commercial carp feed (T4), whereas PER was highest for the T3 group. A significantly higher apparent dry matter and carbohydrate digestibility were observed in the T3 group. Highest crude protein digestibility was observed in T4 group, though lipid digestibility was similar in both T3 and T4 groups. The activities of digestive enzymes were similar in T2, T3 and T4 groups, whereas the lowest activity of these enzymes were observed in T1 group. Based on the findings it is concluded that T3 feed (crude protein 18.18 %) is having comparable growth performance of Labeo rohita as compared to T4 diet (crude protein 32.01 %) due to higher In vivo digestibility.

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