Browsing by Author "Ogie, A. J."

Now showing 1 - 2 of 2

The comparative susceptibility of commercial and Nigerian indigenous chicken ecotypes to Salmonella gallinarum infection
(Faculty of Veterinary Medicine, Usmanu Danfodiyo University, Sokoto, Nigeria, 2013) Ogie, A. J.; Salako, A. E.; Emikpe, B. O.; Amosun, E. A.; Adeyemo, S. A.; Akinoluwa, P. O.
This study was to evaluate thè possible genetic resistance of exotic and indigenous chicks to Salmonella gallinarum. A total of 72 nine weeks-old chicks were used for thè study. The Fulani ecotype (Fulani smooth feathers - FSF), Yoruba ecotype (Yoruba smooth feathers - YSF), and thè Exotic breed (Nera Black) chicks were infected with a dose of S. gallinarum (8.3 x IO6 CFU) and were observed for 16 days. Evaluation of resistance was based on clinical signs, mortality, pathology, leukocyte count, bacterial count from liver and spleen of infected chicks. The highest peak for clinical signs in 5. gallinarum infected chicks coincides with highest mortalities recorded on day 11-12 dpi and bacterial count of both liver and spleen on day 8. The lymphocytes count declined on day 8 for all thè experimental chicks except for thè exotic breed. There was no significant difference between thè bacterial counts of thè different groups on day 8. In S. gallinarum infected chicks, 94.4% of all thè chicks showed clinical signs after infection, thè exotic breed showed a prolonged clinical signs while thè Yoruba ecotype showed thè least. 87.5%, 80.0% and 37.5% mortality were recorded in thè exotic breed, Fulani and Yoruba ecotypes respectively. The study showed that thè exotic chicken (Nera Black) was more susceptible to Salmonella gallinarum infection. It also indicated that within thè ecotypes in Nigeria, Fulani ecotype was more susceptible to Salmonella gallinarum infection than thè Yoruba ecotype. The lower clinical signs and mortality observed in Yoruba ecotype indicated a resistance of thè ecotype to 5. gallinarum infection.
The possible genetic influence on the susceptibility of exotic, Fulani, and Yoruba ecotype indigenous chickens to experimental Salmonella enteritidis
(Fundación CIPAV, Cali, Colombia, 2012) Ogie, A. J.; Salako, A. E.; Emikpe, B. O.; Amosun, E. A.; Adeyemo, S. A.; Toyosi, O. A
This study was conducted to evaluate the possible genetic resistance of exotic and indigenous chicks to Salmonella enteritidis. A total of 72 9 weeks old chicks were for this study which include the Fulani ecotype (FSF), Yoruba ecotype (YSF), and the Exotic breed (Black Nera cockerel). Chicks were infected with 3.8 x104 CFU of S. enteritidis and were observed for 16 days. Evaluation of possible genetic resistance was based on clinical signs, mortality and differential leukocytes count of infected chicks. Clinical signs were evident on day 3 with eighty three percent (83.3%) of the chicks showing severe clinical signs on day 8 post infection. The exotic breed had the most prolonged clinical signs with all the chicks showing severe clinical signs. Yoruba ecotype had the shortest timing for the clinical signs, with 62.5% of the Yoruba ecotype affected. 87.5% of the Fulani ecotype and 98% of the exotic breed were affected. No mortality was recorded with the chicks infected with S. enteritidis. Assessing the clinical signs observed from infected chicks revealed that Yoruba ecotype is the least susceptible. The result from the study also indicated that the exotic is more susceptible to Salmonella infection than the indigenous chicks. It also revealed that within the ecotypes in Nigeria, Fulani ecotype is more susceptible to Salmonella infection than the Yoruba ecotype. The differential susceptibility and the low mortality observed in Yoruba ecotype indicated probable genetic resistance to S. enteritidis