Effect of different levels of brewer's yeast Schizosaccharomyces pombe and molasses on some cellular Blood parameters traits of common carp Cyprinus carpio L.

Abstract

Study was done at Agricultural Research Experiment Station in Um Akf in Samawa, from 1 October/2022 to 20 December /2023, at a dugout pond, it is about 570 meters away from the Euphrates/Atshan River, at coordinates E 45.189309N ,31.321394, to determine the effect of different levels of Brewer's yeast Schizosaccharomyces pombe and molasses and their mixture on fish blood. Experimental parameters were as follows: T0: control diet (without additives). T1: add 0.5 mg brewer's yeast / kg diet. T2: add 1 mg brewer's yeast / kg diet. T3: add 1.5 mg molasses / kg diet. T4: add 2 mg molasses / kg diet. T5: add 0.5 mg brewer's yeast + 1.5 mg molasses / kg diet. T6: add 0.5 mg brewer's yeast + 2 mg molasses / kg diet. T7: add 1 mg brewer's yeast + 1.5 mg molasses / kg diet. T8: add 1 mg brewer's yeast + 2 mg molasses / kg diet. Results indicated that all special treatments, in addition to brewer's yeast and molasses, significantly improved cell blood parameters RBC, Hb, PCV, MCV, MCHC and Platelets) of carp fish compared to control treatment, T2 treatment (addition of 1.5 mg molasses / kg diet) gave the best results significantly compared to the rest of the experimental treatments.