alexa Effects of Dietary Protein Levels on the Growth, Feed Utilization and Haemato-Biochemical Parameters of Freshwater Fish, Cyprinus Carpio Var. Specularis
ISSN: 2150-3508

Fisheries and Aquaculture Journal
Open Access

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Research Article

Effects of Dietary Protein Levels on the Growth, Feed Utilization and Haemato-Biochemical Parameters of Freshwater Fish, Cyprinus Carpio Var. Specularis

Imtiaz Ahmed* and Amir Maqbool

Fish Nutrition Research Laboratory, Department of Zoology, University of Kashmir, Hazratbal, Srinagar

*Corresponding Author:
Imtiaz Ahmed Khan
Fish Nutrition Research Laboratory
Department of Zoology, University of Kashmir
Hazratbal, Srinagar, India
Tel: +91 9419968539
Fax: 019422421357
E-mail: [email protected]

Received date: November 15, 2016; Accepted date: December 21, 2016; Published date: December 29, 2016

Citation: Ahmed I, Maqbool A (2016) Effects of Dietary Protein Levels on the Growth, Feed Utilization and Haemato-Biochemical Parameters of Freshwater Fish, Cyprinus Carpio Var. Specularis . Fish Aqua J 8:187. doi: 10.4172/2150-3508.1000187

Copyright: © 2016 Ahmed I, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

An 8-week feeding trial was conducted to study the effects of dietary protein levels on the growth, feed utilization and haemato-biochemical parameters of mirror carp, Cyprinus carpio specularis (1.50 ± 0.02 g; 4.5 ± 0.05 cm). Six casein-gelatin based isocaloric (367 kcal 100 g-1, gross energy) diets containing graded levels of dietary protein (25%-50% CP) were formulated. 20 fish were randomly stocked in triplicate groups in 75L circular trough fitted with continuous flow-through system and fed experimental diets at 4% BW/day at 0800 and 1700h. Maximum live weight gain (258%), best feed conversion ratio (FCR) (1.63) and protein efficiency ratio (PER) (1.53) were obtained in fish fed diet containing 40% dietary protein. However, quadratic regression analysis live weight gain, FCR, PER and body protein deposition (BPD) data indicated requirements for dietary protein at 43.5%, 41.6%, 34.7% and 37.3% of dry diet, respectively. Significantly higher whole body protein, low moisture and intermediate body fat contents were recorded at 40% protein containing diet (P<0.05). While minimum ash content was recorded at 25% protein level. The highest HIS value (3.39%) was observed at the lowest protein level. Significant differences were also observed in Hb, HCT and RBC values of different groups fed with varying levels of dietary protein (P<0.05). Whereas, no significant differences were observed in their WBC count except at 25% protein level, where higher WBC count was recorded (P>0.05). Based on the above results, it is recommended that 41.5% protein level would be useful for optimum growth and efficient feed utilization of this fish species.

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