THE EFFECT OF Usnea spp. EXTRACT TO THE GROWTH OF SOME MORAXELLA ISOLATES



Praptiwi Praptiwi(1*), M. Harapirti(2), Masniari Poeloengan(3)

(1) Research and Development Center for Biology-LIPI Bogor
(2) Research and Development Center for Biology-LIPI Bogor
(3) Balai Penelitian Veteriner-Bogor
(*) Corresponding Author

Abstract


The aim of this study was to determine the inhibition effect of Usnea spp. extract against the growth of some Moraxella sp. isolates by in-vitro method. Three isolates of Moraxella sp. (1,1589 and ll) were obtained from the cattle that suffer from pink eye disease in Central Java used in this study. Every isolate was tested against several concentrations (10.0, 7.5, 5.0, 2.5 and 1.25%) of Urnea spp. extract. The result indicated that the higher the extract concentration, the higher the growth inhibition of Moraxella sp. obtained (P<.05). The growth inhibition of 10.0, 7.5, 5.0, 2.5 and 1.25% extract concentration were 22.7, 19.7, 17.3, 13.3 and 10.7 mm respectively. The most sensitive Moraxella sp. isolate to Usnea spp. extract was Moraxrella isolate ll (P<.O5). The growth inhibition 0fM0raxelIa isolate 1, 1589 and 11 were 13.2, 17.6 and 19.4 rnrn respectively. 1t was concluded that Usnea spp. extract could inhibit the growth of Moraxella sp.


Keywords


Usnea spp., Moraxella, Growth inhibition.

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