Clostridium perfringens in Poultry Feed Ingredients and Control with Chemical Treatments17 February 2014
The pathogen that causes necrotic enteritis in broilers, Clostridium perfringens, was found in 60 per cent of feed samples in Brazil, where researchers found that some chemical treatments were effective in reducing contamination.
Broiler feed can include meat and bone animal meal and vegetable meal, and one of the major contaminants of these feed components can be Clostridium perfringens, according to M.F. Casagrande from Universidade Estadual Paulista in Jaboticabal, Brazil and co-authors there and Btech Tecnologias Agropecuária e Comercial Ltda.
In a paper in the current issue of Journal of Applied Poultry Research, they explain that, because chemicals have the potential to inhibit the growth of this pathogen, they conducted two experiments to evaluate the effects of chemicals on the growth of C. perfringens in experimentally inoculated feed ingredients.
In the first experiment, the objective was to verify the presence of C. perfringens in samples of ingredients.
The objective of the second experiment was to evaluate the effects of Salmex, formaldehyde, and organic acids against an experimental C. perfringens inoculum.
The researchers isolated C. perfringens from 60 per cent of the feed samples.
The treatment with 3g per kg of Salmex, which was composed of propionic acid, formaldehyde and terpenes, decreased the amount of C. perfringens in the samples and was more effective after five days of treatment.
Significant differences were observed between the products and the action time but no difference was found among the ingredients.
The treatments with formaldehyde and Salmex were more efficient than the treatments with organic acid.
Casagrande M.F., M.V. Cardozo, M.C. Beraldo-Massoli, L. Boarini, F.A. Longo, A.C. Paulilo and R.P. Schocken-Iturrino. 2014. Clostridium perfringens in ingredients of poultry feed and control of contamination by chemical treatments. J Appl Poult Res. 22(4):771-777. doi: 10.3382/japr.2012-00707