ABSTRACT

The written report under discussion was conducted in 90 days in order to analyse the impact of three dietary protein feeds (15% CP, 20% CP, and 25% CP) on elemental concentration (Fe, K, Na, Zn, Ca, Mg, Pb, Cd) in hybrid fry (Catla catla? x Labeo rohita?) by using Flame Atomic Absorption Spectrometry. Criteria for preparation of feed was based on cost effectiveness and local availability of ingredients. An increasing trend of essential elements was noted with increasing protein level. Accumulation trend in all treatment groups in decreasing order is “K”> “Ca”> “Na”> “Mg”> “Fe”> “Zn”> “Pb”> “Cd”. Regression analysis between different elements and body weight exhibited significant correlation in group fed on 15% protein (T1) and 25% protein (T3) except for Pb (Lead) and Cd (Cadmium) respectively, while the subjects fed on diet containing 20% protein (T2) showed no correlations in different metals except in Ca (Calcium). The study revealed that metals in different groups exhibited diverse allometric relation with increasing body weight. Analysis of hybrid body length with total metal concentration revealed that all metals evaluated in the study showed allometrically negative and non significant correlation in all the groups fed on different diets. The multiple regression analysis showed no relation among hybrid body weight and length against elemental concentration in all three feeding groups except in some elements (Na, Pb, Cd). The results indicate, hybrid fed with plant protein feeds showed the levels of elements (essential and non essential) within the permitted levels of international standards. Keywords: Crude protein (CP), hybrid, elemental concentration, Allometry, Multiple regression

https://ijbpas.com/pdf/2019/November/MS_IJBPAS_2019_4857.pdf

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https://doi.org/10.31032/IJBPAS/2019/8.11.4857