COMPARATIVE-STUDIES OF ANTIFUNGAL POTENTIALITIES FOR SOME NATURAL PLANT OILS AGAINST DIFFERENT FUNGI ISOLATED FROM POULTRY

The inhibitory effect of eight natural oils on ten pathogenic fungi is olated from the digestive and respiratory tracts of dead chickens in K ena Governorate showed that crude peppermint oil only has a highest ef fect against some isolated fungi and a low response against others. Wh ile its 10% and 2% oil concentrations failed to give any effect agains t all the tested fungi. Crude chamomile and pelargonium oils showed mo derate effect against all isolated fungi. The effect of different dilu tions of chamomile, cumin and celery oils appeared that the 10% concen tration showed more effective than the crude oil. Lemongrass and basil oils have almost the same behaviour towards the isolated fungi as the crude oils and the 10% concentration affected them greatly. On the ot her hand 2% basil oil gave no effect at all. Critical concentrations o f the efficient oils against isolated fungi were calculated. The most efficient oils were lemongrass against Aspergillus flavipes, chamomile against A fumigatus and cumin against A. nidulans, while cumin agains t A. glaucus, clove against A. flavus were chamomile against A. flavus and clove against A. flavipes were the lowest efficient oils.