A 12-week feeding trial was performed to evaluate the use of animal and plant protein, in combination with dietary supplement glucosamine (GlcN) an amino sugar and a prominent precursor in the biochemical synthesis of glycosylated proteins and lipids on threatened Asian catfish fry, Clarias batrachus fry (av. wt. 0.23 + 0.02 to 0.25 + 0.03g). Six practical feeds (CP 34.27 to 43.52 %, kcal/100g 377.1 to 399, and total fat 1.67 to 6.70%) were formulated on the basis of whole animal or animal-plant combined protein feeds blended with GlcN at 0.5, 5.0 and 10.0%. The six-feeds were prepared by blending with GlcN (F-1, PAG::0:100:0.5; F-2, PAG::0:100:5.0; F-3, PAG::0:100:10.0; F-4, PAG::75:25:0.5; F-5, PAG::75:25:5.0; F-6, PAG::75:25:10.0). The best growth performance was recorded in fish fed F-2 feed among the animal protein group feeding regime (F-1 to F-3) as 0.56±0.04g followed by F-3 (0.46±0.02g) and F-1 (0.38±0.02g). The survival ranged with 60±4.3 to 70±2.4% in animal protein rich diets whereas, the survival range recorded as 50±2.4 to 53±2.4% in plant protein rich diets F-4, F-5 and F-6 in comparison to control feed(F-7) showing 43±1.4% survival. The survival significantly (p
Key words: Glucosamine, Growth, Animal & Plant protein, Clarias batrachus, Fry.
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