Assessment of the anti-Salmonella activity of commercial formulations of organic acid products.

Assessment of the anti-Salmonella activity of commercial formulations of organic acid products. Avian Pathol. 2013 Apr 22; Authors: Wales A, McLaren I, Rabie A, Gosling RJ, Martelli F, Sayers R, Davies R Abstract Organic acid products are widely used in the UK poultry industry as feed or water additives. Claims for Salmonella control are made for some of these products, but there are few studies comparing the anti-Salmonella effect of the various products in tests that reflect field application. The present studies examined the effects of 13 commercial blends (four water products and nine feed products) on Salmonella Enteritidis and Typhimurium strains. Initial screening, in nutrient broth, of all products with all strains revealed little variation between strains in respect of maximum inhibitory and bactericidal dilutions of each product. However, between the products there was wide and significant variation in the maximum inhibitory and bactericidal dilutions, spanning a 700-fold range in the case of bactericidal dilutions for feed-associated products. Further tests were performed, examining reductions in inoculated Salmonella numbers in various matrices (water, feed, soiled litter, crop and caecal contents) following the addition of the products at recommended inclusion rates. One product, incorporating formaldehyde in addition to organic acid, was consistently most active in all matrices, exceeding reductions associated with other products...
Source: Avian Pathology - Category: Pathology Authors: Tags: Avian Pathol Source Type: research