Effect of magnetized water on weight gain, daily weight gain and feed conversion rate of common carp (Cyprinus carpio L.)

تأثير الماء الممغنط في معدلات الزيادة الوزنية والنمو اليومي والتحويل الغذائي لأسماك الكارب الشائع ((Cyprinus carpio L.

Abstract

The present study was carried out to determine the effect of a magnetic water treatment on growth rates of the common carp Cyprinus carpio L. used in the current study, 80 model of fingerlings Fish of common carp with weights range between 21 g and 24 g. The overall length were from 8.9 - 9.9 cm and randomly distributed on four Treatments with 2 replicates , first treated control without a magnetization, in the second one there was a magnetization device with magnetic intensity equals to 2000Gauss ,in the third  treatment the magnetic intensity was 3000 Gauss ,and in the fourth the intensity was 4000 Gauss. The experiment lasted for 141 days science July 9^th 2012 till November 11^th 2012. The current study shows a significant increase (P ≤ 0.05) for weight gain (0.94±38.75)g, daily weight gain (0.005±0.27 g) and the rate of feed conversion rate (0.10 ± 3.17), for the fourth fingerlings treatment (4000 Gauss) .