Water soaking and exogenous enzyme treatment of plantbased diets: effect on growth performance, whole-body composition, and digestive enzyme activities of rohu, Labeo rohita (Hamilton), fingerlings

Xavier, Biji and Sahu, N P and Pal, A K and Jain, K K and Misra, Sougat and Dalvi, R S and Baruah, Kartik (2012) Water soaking and exogenous enzyme treatment of plantbased diets: effect on growth performance, whole-body composition, and digestive enzyme activities of rohu, Labeo rohita (Hamilton), fingerlings. Fish Physiology and Biochemistry, 38 (2). pp. 341-353.

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    Abstract

    A 2 9 2 9 2 factorial experiment was conducted to delineate the main effect of water soaking of plant ingredients, phytase, cellulase, and their interactions on the growth and digestive enzyme activities of Labeo rohita fingerlings. Two basal diets were prepared using water-soaked (S) or unsoaked (US) plant-based ingredients. Feed of US ingredients was supplemented with phytase (U kg-1) and cellulase (%) at the level of 0, 0 (Cus); 500, 0 (T1); 0, 0.2 (T2); 500, 0.2 (T3), and feed of S ingredients at 0, 0 (Cs); 500, 0 (T4); 0, 0.2 (T5), and 500, 0.2 (T6), respectively. Three hundred and sixty fingerlings were randomly distributed into eight treatments, each with three replicates. Soaking of the ingredients for 24 h significantly reduced the tannin content. However, feeding of S diets did not improve the fish growth. Highest performance was recorded in the T3 group. A significant interaction between dietary phytase and cellulase was observed for apparent net protein utilization. Tissue crude protein, ether extract, and ash content of the fingerlings were observed highest in the T3 group. Activities of amylase, protease, and lipase were recorded highest in the T3 group. Results suggested that soaking of plant-based ingredients reduces tannin content; however, growth and digestive enzyme activities of group fed soaked diet were not improved, possibly due to leaching of soluble nutrients. Probably, a shorter duration soaking may be effective in reducing tannin content and avoiding nutrients leaching.

    Item Type: Article
    Uncontrolled Keywords: Antinutritional factor; Soaking; Phytase; Cellulase; Growth; Digestive enzymes; Labeo rohita
    Subjects: Fish Biotechnology
    Divisions: CMFRI-Visakhapatnam
    Depositing User: Arun Surendran
    Date Deposited: 20 Feb 2014 06:47
    Last Modified: 09 Sep 2015 15:58
    URI: http://eprints.cmfri.org.in/id/eprint/9896

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