In (I private Jann. the effects oj mycotoxicosis and/or bmcellosis were studied on bu.1Jaiocs and entlle, Frolll c(lch oJ species (one month after abortion or normal parturi-tum1 twenty animals were divided Into Jour equal groups. The first group was sert.'€d as control anImals, the second group was non·lrifected animals but the mycotoxins were detected in llleir scmm. the third group was naturally brucella Injected animals ((nd the Jourth group was both natllralfy brucella ilifected and

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... in poisoned animats, BrtJCellosts was ident!fied serologlcally andJrom the dinfcaf signs. Mycowxicologleal. serologicai, h.ormonal. serum protebl eiectrophoretlcal und biochemiCal studies u"'ere canied out. Results indicated that the Illycofoxins which were detected In serum. oJcuu.le and buffaloes arc qfla.loxtn·(jJ oc/tra(axin,A andJwnonsln'Bl by a cOllcenlFU' fions in buffaloes more than that in cattle. In contrast, the higher brucella titers wefe detected in cattle than (hat In buffaloes. MycoroxtrosL<; and/or bruceUosis could tnduced reproductive dlsturbances (due to tile chartges oj serum progesteron, estrogen, tliiodothyrontn (1'3) and thyroxill tT4J hornwnes), immwwsuppresslon by rnycotaxtoosis in buffaloes (beca.use oj garruna g[obulinemCa). metabotic dlscurbances (due !o lile increase oJT3. T4 arid total lipids), and Ifuer wJsuncllon in b4iJaloes (due In the increase oj total bilirubin conrentrutwn and the activit!! oj ALT enzyme). The mycofoxlns should be clticked. in regions oj high mcidence oj brucellosis in order to controWng or dimf/luting t.he mycotoxicosL'i which ts a predL<.posfng stress factor Jor OCCWTence oj Irifectinns by their iInmunooepressWlt propertfes. Mansoura. Vet. Moo. J. (137 -152} Vol. vm. No, 1. 2006 Abdel Fattah. Sh.M.; et al .. , 138 Tlw obtalm . .'d data wen; staUfilically «nalys{'d uSing F-tcsi through tht' analysts of variance {Ar;;OVA), and 111(' student's t-t.est according to Snedeco .