Effect of adding different levels of celery seeds powder with or without supplementation of exogenous enzymes upon the cost of feed for egg production and the external and internal quality of quail eggs

A total 250 quail females 120 days old were randomly divided in to ten dietary treatments (1: basal diet, 2: basal diet plus 0.10% exogenous enzymes, 3: basal diet contained 0.25% celery seeds powder, 4: basal diet contained 0.50% celery seeds powder, 5: basal diet contained 0.75% celery seeds powder, 6: basal diet contained 1.00% celery seeds powder, 7: basal diet contained 0.10% exogenous enzymes plus 0.25% celery seeds powder, 8: basal diet contained 0.10% exogenous enzymes plus 0.50% celery seeds powder, 9: basal diet contained 0.10% exogenous enzymes plus 0.75% celery seeds powder, 10: basal diet contained 0.10% exogenous enzymes plus 1.00% celery seeds powder). The numbers of birds for each replicate (cage) were five birds and each treatment included five replicates. The results of statistical analysis showed significant differences (p