Open AccessEffects of Dietary Fiber on Growth and Gastric Emptying Time of the Freshwater Prawn Macrobrachiurn rosenbergii (De Man, 1879)
Author(s) -
Carmen GonzálezPeña Maria,
Gomes Santo Z.,
Moreira Gloria S.
Publication year - 2002
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/j.1749-7345.2002.tb00023.x
Subject(s) - macrobrachium rosenbergii , prawn , biology , digestion (alchemy) , gastric emptying , zoology , nutrient , fiber , cellulose , fishery , food science , stomach , biochemistry , ecology , chemistry , organic chemistry , chromatography
Feeding experiments were conducted on large and small adult freshwater prawns Macrobrachium rosenbergii (36.96 ± 1.65 and 13.48 ± 1.65 g in weight) to determine the impact of dietary fiber on growth, digestion, and gastric emptying time. Fiber was incorporated as Q‐ cellulose into four semi‐purified diets at calculated levels of 0, 5, 10 and 15% at the expense of starch and fed for an 8‐wk period. The experiment was conducted in a closed, filtered, recirculating freshwater system. The results indicate that the specific growth rates, feed conversion ratios, and protein efficiency ratios improved as the levels of dietary fiber increased from 0.4% to 8%. Gastric emptying times increased as the level of inclusion of cellulose in the diets increased. It was concluded that diets containing up to 10% dietary fiber increases growth rates in adult prawn Macrobrachium rosenbergii by increasing nutrient residence time in the gastrointestinal tract, thereby increasing absorption.