REPLACEMENT OF COMMERCIAL DRY YEAST (SACCHAROMYCES CEREVISIAE) WITH ANIMAL PROTEIN CONCENTRATE AND ITS EFFECT IN SOME BLOOD PARAMETERS FOR FINGERLINGS COMMON CARP CYPRINUS CARPIO L.

The experiment was conducted in the fish laboratory of Animal Production Department, Facultyof agricultural sciences, University of Sulaimaniya in Kurdistan region of Iraq for the period from25/07/2015 to 15/10/2015. Starting with a period of the acclimatization for 21 days, to test theefficiency of using commercial dry yeast Saccharomyces cerevisiae as alternative protein source toanimal protein concentrate (APC) used in the manufacturing of diets for common carp Cyprinuscarpio L. by using 90 fish of common carp C. carpioat weights ranged 22-42 gm. Divided into 15groups distributed at randomly on 15 plastic ponds by five treatments with three replicates pertreatmentthetreatments contain different levels from APC and yeast S.cerevisiae as below: Firsttreatment (Control T1) 100% APC/ 0.00% yeast S. cerevisiae,second treatment (T2) 75% APC/25% yeast S. cerevisiae, third treatment (T3) 50% APC/ 50% yeast S. cerevisiae, forth treatment(T4) 25% APC/ 75% yeast S. cerevisiae, fifth treatment (T4) 0.00% APC/ 100% yeast S.cerevisiae. T5 was significantly differences (P≤0.05) in counts red blood cells RBC as comparedwith other treatments, T4 was significantly differences (P≤0.05) Packed Cell Volume (PCV) ascompared to the other treatments ,also treatments T3, T2 and T4 significantly increase (P≤0.05) inmean concentration of hemoglobin (MCHC) as compared to the other treatments,T2 wassignificantly increase (P≤0.05) in white blood cells counts WBC and granulocytes percentage ascompared to the other treatments ,also treatments T2 and T3 significantly increase (P≤0.05) inmonocytes percentage as compared to other treatments.The results of blood serum showed that T2 significant improvement (P≤0.05) inthe level of Cholesterol concentration as compared to the othertreatments, significant improvement (P≤0.05) in the level of Triglyceride concentration for T2 ascompared with T1 and T5, T3 was significantly improvement (P≤0.05) in High-density lipoproteins(HDL) as compared to the other treatments, significantly improvement (P≤0.05) in low-densitylipoproteins concentration LDL for othertreatments as compared with T1.