biological control of campylobacter species by using bacillus thuringiensis

Abstract: Bacillus thuringiensis ( B.T.) varities namely : thuringiensis , israelensis and kurstaki were tested for the resistance of campylobacter strains ( C.fetus subspecies venerealis , c.fetus subspecies fetus c.jejuni and c.sputorum , subspecies bubulus) in vitro . 12*12(6) colony forming units ( c.f.u) of B.t. of each type were used up to 10 serial dilution of each campylobacter strains from each dilution .0.5 ml of 75 hrs thiol broth cultures of campylobacter strains containing 25*10(7) cfu were inoculated and incubated at 37 c in microaerophilic condition . each dilution was examined after one .2.3.6.12and 24 hrs under phase contrast microscope for campylobacter viability , the present study showed that different concentration of B.T.var thuringiensis ( 0.02*10(6): 12*10(6) were completely inhibited the growth of campylobacter species . while .B.T.var isruelensis sensitive only for growth of c.f ssp . fetus at concentration of ( 0.02*10(6) : 12*10(6) ) but inhibited the growth of c.jejuni at higher concentration ( 0.75*10(6) : 12*10(6) at concentration ( 0.18*10(6) : 12*10(6) ) inhibited the growth of c.f. ssp. venerealis and at concentration ( 3*10(6) : 12*10(6) ) inhibited the growth of c.f. ssp. bubulus
on the other hand ,B.t. var kurstaki hand no inhibiting effect ( resistant ) on c.f.ssp. venerealis , c. jejuni and c. sp ssp . bubulus at all concentration used while , inhibited the growth of c.f. ssp . fetus only at higher concentration ( 3*10(6) : 12*10(6)
Publication year 2004
Availability location مكتبة معهد بحوث صحة الحيوان
Availability number
Organization Name
City الاسماعيلية
serial title مجلة كلية الطب البيطرى بقناة السويس
Author(s) from ARC
Agris Categories Animal diseases
AGROVOC
TERMS		 Bacillus thuringiensis. Biological control. Campylobacter.
Publication Type Journal
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