Melissa officinalis L. extract and its main phenolic compound rosmarinic acid as phytoprophylactic feed additives against koi herpesvirus infection in a pilot study

A. Haselmeyer, N. Nowotny, H. Heistinger, J. Kolodziejek, J. Homola, K. Nöbauer, E. Razzazi-Fazeli, H. Soliman, M. El-Matbouli, K. Zitterl-Eglseer^*

^*المؤلف المقابل لهذا العمل