The role of proteolytic enzymes of some local isolates of Arthrobotrys Spp. in the biocontrol of third stage larvae of Haemonchus contortus

In this study the presence of protease in three isolates of fungi Arthrobotrys including A.oligospora. var.oligospora, A.cladodes .var.macroides and A.oligospora. var. sarmatica (zare), was investigated. Our finding revealed the presence of protease in all three local isolates of Arthrobotrys. Althoug the highest activity of the enzyme was observed in A.cladodes var macroides (p0.05).Proteolitic activity of three isolate was shown in both media used, but was higher in Soy peptone. Anti protease activity of PMSF at 1mM and 0.1mM inphenyl PMSF media were higher than EDTA, for A. cladodes var macro ides and A.oligospora var oligospor (p