Antibacterial Activity of Ethanol and Methanol Extracts of Date Pits Against Staphylococcus aureus and Escherichia coli

S OF PAPERS 191 The WS prevalence was above 90% in all groups. The prevalence of WS score 2 was 54.0, 81.2, 62.5 and 68.6% whereas the mean WS scores were 1.50, 1.79, 1.58 and 1.63, for C, Cox, V and VLE, respectively, being significant (P<0.001) the difference Cox vs C and V. The prevalence of WS grade 2 causes breast downgrade that results in economic losses, and the mean WS score was higher in birds treated with coccidiostat than in vaccinated ones, but no difference was observed due to the diet. These results could be explained by the different growing curves of the groups. This study provided a new perspective for the control of WS prevalence and a starting point for further studies.