International Journal of Poultry Science1682-83561994-7992Asian Network for Scientific Information10.3923/ijps.2016.448.453Sumiati DarmawanA. WiryawanK.G. 1120161511Objective: The aim of this study was to investigate the effect of feeding diets containing different amounts of omega-3 and omega-6 fatty acids and organic zinc on egg quality and blood hematology. Methodology: Ninety Magelang laying ducks of 21 weeks old were randomly divided into 18 experimental units in a completely randomized design with 6 treatments and 3 replications. The treatment diets included the following: R0 = Diet without palm oil, fish oil or organic zinc with ratio of 1:5 omega-3 and omega-6, R1= Diet with ratio of 1:1.5 omega-3 and omega-6+200 ppm organic zinc, R2 = Diet with ratio of 1:3 omega-3 and omega-6+200 ppm organic zinc, R3 = Diet with ratio of 1:4.5 omega-3:omega-6+200 ppm organic zinc, R4 = Diet with ratio of 1:6 omega-3 and omega-6+200 ppm organic zinc, R5 = Diet with ratio of 1:7.5 omega-3 and omega-6+200 ppm organic zinc. Results: The R2 treatment decreased significantly (p<0.01) yolk cholesterol but the highest value of vitamin A was resulted by R5. The best ratio of omega-3 and omega-6 was produced by R2 (1:3.4). The R1 treatment resulted the lowest heterophil to lymphocyte ratio. Conclusion: Conclusively, feeding diets with ratio of omega-3:omega-6 fatty acids of 1:3+200 ppm organic zinc produced the best ratio of omega-3:omega-6 in yolk as well as increased vitamin A content, decreased yolk cholesterol content and did not interfere ducks physiologically.]]>Kazmierska, M., B. Jaros, M. Korzeniowska, T. Trziszka and Z. Dobrzanski,2005146973Steinberg, D.,200546179190Hardini, D., T. Yuwanta, Zuprizal and Supadmo,2006Rattus norvegicus L. blood cholesterol content.]]>11260265Patterson, E., R. Wall, G.F. Fitzgerald, R.P. Ross and C. Stanton,20122012Benson, M.K. and K. Devi,20094798103Simopoulos, A.P.,2004207790Meunier, N., J.M. O'Connor, G. Maiani, K.D. Cashman and D.L. Secker et al.,200559S1S4Munoz, E.C., J.L. Rosado, P. Lopez, H.C. Furr and L.H. Allen,200071789794Koppenol, A., E. Delezie, J. Aerts, E. Willems and Y. Wang et al.,201493564573Mandal, G.P., T.K. Ghosh and A.K. Patra,20142716081614Kral, I. and P. Suchy,200069189194Elagib, H.A.A., A.D.A. Ahmed, K.M. Elamin and H.E.E. Malik,20122568572Darmawan, A., K.G. Wiryawan and Sumiati,201336197202Burke, R.W., B.I. Diamondstone, R.A. Velapoldi and O. Menis,197420794801Bain, B.J. and F.R.C. Path,2005353498507Kehui, O., W. Wenjun, X. Mingshen, J. Yan and S. Xinchen,200417843847Aziz, Z., S. Cyriac, V. Beena and P.T. Philomina,2012436466Adkins, Y. and D.S. Kelley,201021781792Jump, D.B., S. Tripathy and C.M. Depner,201333249269Palupi, R., L. Abdullah, D.A. Astuti and Sumiati,2014Indigofera sp., top leaf meal in laying hen diets.]]>13198203Leeson, S. and J.D. Summers,20053rd Edn.,Pages: 398Pages: 398Rahman, M.M., M.A. Wahed, J.G. Fuchs, A.H. Baqui and J.O. Alvarez,2002759298Carrillo-Dominguez, S., G.E. Avila, P.C. Vasquez, B. Fuente, C.C. Calvo, J.M.E. Carranco and R.F. Perez-Gil,201261219Suripta, H. and P. Astuti,2007coturnix coturnix japonica). [The effects of sardine and palm oil in rations on the ratio of omega-3 to omega-6 fatty acids in eggs of Coturnix coturnix japonica].]]>322227, (In Indonesian)Sturkie, P.D. and P. Griminger,19761976pp: 53-75pp: 53-75Ismoyowati, I., T. Yuwanta, J.H.P. Sidadolog and S. Keman,200688893Ali, A.S., Ismoyowati and D. Indrasanti,2013110011013, (In Indonesian)Wardhana, A.H., E. Kencanawati, Nurmawati, Rahmaweni and C.B. Jatmiko,2001Euphorbia hirta L.) preparations on erythrocyte number, haemoglobin level and haematocrit value of chicken infected with Eimeria tenella].]]>6126133, (In Indonesian)McCowen, K.C. and B.R. Bistrian,200377764770Rusmana, D., W.G. Piliang, A. Setiyono and S. Budijanto,200810110116Wajizah, S., K.G. Wiryawan, W. Manalu and D. Setyaningsih,20137912, (In Indonesian)Kelleher, S.L. and B. Lonnerdal,200613611851191Brody, T.,1994Pages: 658Pages: 658Day, M.J. and R.D. Schultz,2010Pages: 256Pages: 256Ismoyowati, M. Samsi and M. Mufti,201214111117Prasad, A.S., F.W. Beck, B. Bao, J.T. Fitzgerald, D.C. Snell, J.D. Steinberg and L.J. Cardozo,200785837844Winarsi, H., D. Muchtadi, F.R. Zakaria and B. Purwantara,2004152834, (In Indonesian)Campo, J.L., M.G.G. Gil, I. Munoz and M. Alonso,200079453459