Ammar Thamer^(1)*

(1). Department of Animal Production, College of Agriculture and Forestry, University of Mosul, Mosul, Iraq

 (*Corresponding author:  Ammar Thamer,Email: amar.raeed@uomosul.edu.iq)

Received: 24/01/2023       Accepted: 10/04/2022

Abstract: 

Common carp Cyprinus carpio L. were fed on four balanced treatments in terms of crude protein (25.60%) and metabolic energy (13.28 MJ/kg feed). The first was the control diet, while the second, third, and fourth treatments were added to ginger Zingbar officinale  powder in proportions of 6 and 8 and 10%, respectively. The feeding experiment was carried out in glass aquariums for 56 days, preceded by a 21-day acclimation period to the aquarium environment. The results of the statistical analysis showed that the fish fed on 8% ginger (the third treatment) were significantly superior (P ≤ 0.05) over the control treatment and the fish fed on the second and fourth treatments in the criteria of final weight, weight gain, relative growth rate and specific  growth rate, feed conversion rate, feed efficiency ratio, and protein efficiency ratio PER, as well as in the parameters of retained protein,  protein productive value (PPV) and in the high percentage of crude protein in the edible portion of the body. The results of the current research showed that the addition of ginger had a positive effect on growth parameters and the utilization of food.

 Keywords: common carp, ginger, growth characteristics, feed conversion rate, PER, protein efficiency rate, PPV, protein yield.

Full paper in Arabic: pdf