Effect of Different Levels of Brewer’s Yeast Schizosaccharomyces pombe and Molasses on some Growth Parameters of Common Carp Cyprinus carpio L.

Abstract

From October 1, 2022, to December 20, 2023, researchers at the first agricultural research and experiment station in Um Al-Akf, Al-Muthanna Governorate, used a 45-by-35-by-1.5-meter dugout pond located 570 meters from the Euphrates/Atshan River (at the coordinates E 45.189309N, 31.321394) to test the effects of various concentrations of the brewer’s yeast Schizosaccharomy The common carp, Cyprinus carpio L. The 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. The results indicated that all special treatments, in addition to brewer’s yeast and molasses, significantly improved the growth parameters of carp fish compared to the control treatment. Results were much better with the T3 therapy (addition of 1.5 mg molasses / kg diet) compared to the other experimental treatments.