Acetic acid for broiler fed rations experimentally contaminated with" Salmonella Enteritidis" and" Salmonella Typhimurium".

Abstract:

An experiment was performed with 200 chicks at 1 day old. Fowls were allotted in a completely randomized design with five treatments and four replications of 10 chicks, each. Ration was based on corn-soybean, formulated according to nutritional requirements and without any animal by-product or conservatives. This ration was experimentally contaminated with Salmonella Enteritidis and Salmonella Typhimurium and treated with acetic acid in five different concentrations (0, 0.5%, 1.0%, 1.5% and 2.0%) from eight to 21 days of age. Weight gain, feed intake and feed-to-gain ratio were evaluated and, simultaneously, the efficiency of acetic acid to reduce and/or eliminate, from experimental rations, the pathogen, at different supplementation levels. The presence of bacteria was evaluated from cloacal swabs and pool liver, heart and gall bladder of one fowl from each experimental replication. The acetic acid levels of 0.5%, 1.0% 1.5% and 2.0% influenced positively the weight gain and feed-to-gain ratio. When the Salmonella sp. recovering was analyzed in treated rations, the concentration of 1.5% acetic acid showed the highest reduction on bacterial contamination. Acetic acid at 1.5% concentration was effective to reduce Salmonella sp. contamination in ration, but not to eliminate concentrations.

Año de publicación:

2008

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Fuente:

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