Application of organig acid mixture (antibacterial)‎ added to ration for improving broiler performance

الملخص EN

A study was conducted to evaluate the effect of supplement of formic and propionic acids mixture and their ammonium salts on broiler perform-ance.

In the first experiment, the reduction of bacterial load in ration treated by the preparation understudy (at a concentration of 1 Liter/ Ton) compared with the control along one month.

This reduction incr-eased at percentage of 11.1%, 19%, 28.5%, 39.2% and 57% in 1, 2, 7, 15 and 30 days respectively.

The main isolated bacteria from ration were: Citrobacter amalaniticus, Enterobacter aerugenes, E.coli and Proteus mirablus could be isolated till 7 days, while this period was extended in case of Staphylococcus aureus and Klebsiella pneumoniae to 15days.

On the other hand, Streptococcus faecalis, Bacillus anthracoid, Pseudomonas aeruginosa and Salmonella spp.

were isolated even at the 30 day.

In the second experiment, One hundred day-old chicks were divided into 2 groups.

The first group 50 chicks received ration-containing the preparation (1 liter / ton).

The second group chicks received normal ration.

The obtained results revealed that, the prepa-ration increase the body weight and feed conversion efficiency from 1704.4 g and 0.657 to 1733.4 g and 0.695respectively.

In addition, it decreases feed consumption and mortality rate (from 2.5% to 2%).

Bacterial examination of heart blood and liver from freshly dead broi-lers in both groups was performed.

With the addition of the preparation Edwardsiella spp.

was failed to be isolated at 7 days.

While, Citrobacter amalaniticus, Enterobacter aerugenes, Micrococcus spp., Proteus mirablus, Staphylococcus aureus and Staphylococcus epidermides were not isolated after 15 days.

E.coli and Klebsiella pneumoniae isolated until 30 days.

On the other hand, Bacillus anthracoid, Streptoc-occus faecalis, Pseudomonas aeruginosa and Salmonella spp were isolated even after 30 days.

In conclusion, the present study clarified that preparation have some beneficial effect in improving the performance of broilers.