National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A 60-day experiment was conducted to determine the effect of graded levels of dietary Zinc supplementation on growth and nutrient utilization of Pangasianodon hypophthalmus (Sauvage, 1878) fingerlings. Fishes of uniform size (average weight 10.5-11 g) were divided into six experimental groups in triplicates following completely randomized design (CRD). Six is nitrogenous and is energetic (30% Crude protein and 381kcal/100g Digestible energy) casein-based diet were supplemented with 20 (control), 23(T1), 26(T2), 29(T3), 32(T4) and 35(T5) mg zinc/kg diet respectively were fed to Pangasianodon hypothalamus juveniles for a period of 60days. The Specific growth rate (SGR), Protein efficiency ratio (PER), and Feed efficiency ratio (FER) were significantly (p < 0.05) higher in the T4 treatment group. Intestinal amylase, gill carbonic anhydrase activities were increased whereas muscle Calpain activity was lowered with increased supplementation level of Zinc in the diets in subsequent treatment groups. Based on our finding it is concluded that dietary Zinc supplementation at 32mg/kg diet improves growth performance and flesh quality of Pangasianodon hypophthalmus.
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