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Title: EFFECT OF CHALLENGE TIME AND DOSAGE ON SALMONELLA CECAL COLONIZATION FOLLOWING TREATMENT WITH CF3, A CHARACTERIZED COMPETITIVE EXCLUSION CULTURE

Author
item Hume, Michael
item Corrier, Donald
item Nisbet, David
item DELOACH, JOHN

Submitted to: Journal of Food Protection
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 10/29/1997
Publication Date: N/A
Citation: N/A

Interpretive Summary: Chicks at one day of age were treated with a mixture containing 29 beneficial bacteria referred to as CF3**TM. Previous studies demonstrated that the growth of Salmonella in the digestive tracts of young chicks experimentally infected with Salmonella 48 h after the chicks were treated with the CF3**TM bacteria was reduced. The purpose of the present study was to determine the effect of CF3**TM treatment on Salmonella infection in chicks when exposure to Salmonella occurred at 4, 24, or 48 h after they were given CF3**TM. The results indicated that following experimental infection with Salmonella the numbers of Salmonella were significantly decreased in chicks treated with CF3**TM as early as 4 h after the treatment. The results of this study are of interest to researchers, growers, and producers of poultry products.

Technical Abstract: Broiler chicks were treated by oral gavage on day-of-hatch with a continuous-flow competitive exclusion culture containing 29 cecal bacteria (CF3**TM). At 4, 24, or 48 h post-treatment, chicks were challenged by oral gavage with 10**2 or 10**4 Salmonella to determine the effects of challenge time and dosage on Salmonella cecal colonization. Cecal propionic acid concentrations increased (P