01472naa a2200217 a 450000100080000000500110000800800410001910000220006024501220008226000090020452008310021365000130104465000250105765000150108265000150109765000100111270000240112270000210114670000200116777300670118720753732017-09-11       2017    bl uuuu     u00u1 u    #d1 aREINIGER, R. C. P  aCan Haemonchus placei-primary infected naïve lambs withstand Haemonchus contortus infections?h[electronic resource]  c2017  aAn experiment was conducted with the objective of evaluating whether a 5000 L3 larvae Haemonchus placei primary infection, a less pathogenic parasite species for sheep, could attenuate highly pathogenic Haemonchus contortus infections in lambs. Thirty nine 6-month-old lambs were divided in three primary-infection groups: (HcPI) H. contortus-primary infected lambs, (HpPI) H. placei-primary infected lambs, and (CTRL) non-infected control lambs. Later, these same individuals, then aged 10-month old, were cross challenged with Haemonchus parasite species, creating four groups: HcPI challenged with H. placei (HcPI-HpCH), HpPI challenged with H. contortus (HpPI-HcCH), HcPI challenged with H. contortus (HcPI-HcCH), and CTRL. After a 60-day challenge peri- od, all animals were necropsied for gastrointestinal worm counts...  aCordeiro  aHaemonchus contortus  aInfecção  aNematóide  aOvino1 aCASTRO, L. L. D. de1 aBENAVIDES, M. V.1 aBERNE, M. E. A.  tResearch in Veterinary Sciencegv. 114, p. 136-142, Oct. 2017.