الفهرس 
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Abstract
9. INTRODUCTION
Nowadays, the use of some antibiotics as growth promoter
creates a huge problem for environmental condition and health of
consumers. Therefore, nutritionists are trying to substitute those with
different natural feed additive, such as organic acids. Organic acids
have been used for decades in feed preservation, either for protecting
feed from microbial and fungal destruction or to increase the
preservation effect of fermented feed. Organic acids are not antibiotics
but, if used correctly along with nutritional, managerial and biosecurity
measures, they can be a powerful tool in maintaining the health
of the gastro intestinal tract of poultry, thus it is improving their
performances. If it applied correctly, organic acids work in poultry, not
only as a growth promoter but also as a meaningful tool of controlling
all bacteria, both pathogenic and non-pathogenic (Wolfenden et al.,
0227).
There is an increasing trend in using organic acid and their
mixtures, as alternatives to antibiotic growth promoters due to their
inhibiting activity on the growth