|Mcreynolds, Jackson - TX A&M UNIVERSITY|
Submitted to: Southern Poultry Science Society Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: January 20, 2003
Publication Date: N/A
Technical Abstract: The objectives of this study were to evaluate the effectiveness of feeding an Experimental Chlorate Product (ECP) for 7 d prior to slaughter on the reduction of Salmonella in the crop and ceca of market-age broilers, and its subsequent effects on their performance. At 6 wk of age, one hundred and sixty broilers were randomly assigned to eight groups of twenty birds and placed in floor pens containing pine litter. Prior to placement, each bird was orally challenged with 1 x 10**9 Salmonella Typhimurium (ST). Groups 1 through 6 were fed a normal broiler ration supplemented with 0, 0.5, 1.0, 5.0, 10.0, or 18.0 g/bird/d of a feed grade ECP, respectively. Group 7 was fed a normal diet supplemented with 25.0 g/bird/d of the experimental carrier alone (containing no chlorate) and group 8 was fed a normal broiler ration with 1 x ECP (containing 15mM chlorate ion equivalent) added to the drinking water. Performance variables investigated were BW, feed consumption, feed conversion, and mortality. Crop and cecal contents were aseptically collected and spread on Brilliant Green and MacConkey agar plates to enumerate ST and wild type Escherichia coli (EC), respectively. No dietary effects on BW, feed consumption, feed conversion, or mortality were observed. However, litter samples from the pens of birds exposed to ECP had significantly higher moisture content than birds not exposed to ECP. Litter moisture significantly increased as the percentage of ECP in the diet increased. ECP in the diet or in the drinking water significantly reduced the incidence of birds positive for ST without affecting the number of birds positive for EC in both the crop and ceca. However, birds fed higher ECP concentrations had 1-2 log reductions of ST and EC in the crop and ceca. These results indicate that ECP supplementation of feed or water prior to slaughter effectively reduces Salmonella and Escherichia species in broilers, and may potentially reduce the risk of contaminating poultry products.