Effect of adding different levels of ginger oil Zingibar officinale to the diets of common carp Cyprinus Carpio L. on some blood traits

The current study was conducted to investigate the effect of using different levels of ginger oil Zingibar officinale to diets of common carp Cyprinus carpio L. on some blood traits, were reared at experimental cages inside an earthen pond in the first agricultural research and experiment station of the College of Agriculture in Umm Al-Akaf area in Al-Muthanna Governorate, the experiment lasted for 82 days from 1/10/2021to 20/12/2021, including the 10-day acclimation period. A total of 80 common carp fish, with an average weight of 77±0.56gm, were brought, it was distributed randomly to four treatments with four replicates, each replicate 5 fishes. The fish were fed on experimental diets divided into four equal treatments of protein content and different in the proportions of adding ginger oil, the percentage of oil added to the treatments was 0, 0.25, 0.5 and 1%, respectively, the fish were fed on the experimental diets at 5% of the live weight, divided into 4 meals a day, then reduced to 3% of the live weight, and it was divided into 3 meals per day. The results related to the hematological and biochemical parameters of the experimental fish were shown, there were significant (P≤0.05) differences between the treatments, control treatment was superior on white blood cells number compare with the other treatments, while the fish of the third treatment recorded a significant superiority on red blood cells number compare other treatments, control treatment also recorded a significant superiority on hemoglobin concentration, T3 treatment was significantly superior on PCV. As for the biochemical parameters of the blood, the fish of the control treatment recorded a significant superiority in the concentration of albumin and glucose in the blood.