Batool A Majeed, Wasan Moaed Shaker, Samar S Ghazi and Bahaa A Alsereah

The experiment used 180 quail eggs with florfenicol in some production and egg hatchring distributed into four groups, at a rate of 45 egg for each treatment, inject the eggs before the first day of Incubation at the wide end of the egg with the following compounds. The first group: There is no injected group (control), The second group: a group of injections with phosphate-buffered saline solution. The third and fourth groups whose members were injected with florfenicol injectable solution at a dose of 10 and 20 mg/kg of egg weight, respectively. The results indicated that notice the highest hatching rate was in the third and fourth treatments, respectively. As for the average weights of hatched birds, they increased significantly in the third and fourth treatments, respectively, compared to the other study treatments. there was a numerical increase in the mortality of birds in the first and second treatments compared to the rest of the study treatments, as there were no deaths during the breeding period, that there was a significant increase in the average weights of perished embryos during the various stages of embryonic development. As for the differences between the percentages of perished embryos during stages of embryonic development and the percentage of quantitative embryonic deaths were not significant. As significant increase for all ages compared to the live weight character of the birds treated 2, 3, 4 and Control group. No significant difference appeared between the study treatmentson weight gain. We conclude that injecting hatching eggs with florefenicol on the first day before incubation, at a dose of 20 mg/kg eggs, improved the final weight of the birds and eggs hatcharing.

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