Project description:Avian coccidiosis is a major disease of poultry caused by the intestinal protozoa Eimeria. Aviagen line A and line B birds show differential susceptibility to Eimeria infection, with line B birds exhibiting higher lesion scores and mortality. The objective of this study was to examine differential intestinal gene expression between line A and B chicks in response to a challenge with Eimeria maxima. Following challenge with 1 x 10^4 oocysts/chick, greater than 40% of line A chicks had lesion scores of 0 to 1 (on 0 to 4 scale), similar to controls. In contrast, all line B challenged chicks at this same dose had lesion scores of 2 to 4.
Project description:Eimeria tenella is a high pathogenic coccidian that causes avain coccidiosis. Both Nitromezuril(NZL) and Ethanamizuril(EZL) are novel triazine compounds with high anticoccidial activity, but the mechanisms of their action are still unclear. This study explored the response of E.tenella to NZL and EZL by the study of changes in protein composition of the second-generation merozoites using label free quantification proteomics.After drug treatment, the merozoites were analyzed by LC-MS/MS. The identified proteins were annotated and analyzed by Gene ontology, Kyoto Encyclopedia of Genes and Genomes pathway and Protein-protein interaction networks analysis.
Project description:This study investigated the ability of two novel adjuvant formulations, QCDC (Quil A/cholesterol/DDA/Carbopol) and QCDCR (QCDC/Bay R1005), in combination with a recombinant profilin vaccine, to modulate host protective immunity and to alter new gene expression during experimental avian coccidiosis.