highly significantp < 0.0001
Moreover, our results showed that the overall average resistance of Salmonella isolated from M-hatcheries was higher than that of L-hatcheries ( p = 0.0013), while statistical analysis performed by using two-way ordinary ANOVA, showed that the difference in resistance to the individual antimicrobial was statistically highly significant ( p < 0.0001) ( Figure 3 ).