ARS | Publication request: EFFECT OF COMPETITIVE EXCLUSION OF SALMONELLA SHEDDING IN SWINE

Submitted to: Salmonella and Salmonellosis International Symposium
Publication Type: Abstract Only
Publication Acceptance Date: April 7, 1997
Publication Date: N/A

Technical Abstract: The effect of administration of competitive exclusion cultures to swine on Salmonella (SAL) shedding was evaluated. Baby pigs were provided a competitive exclusion (CE) culture (pCF1) at farrowing and 24 hr later, then challenged with 10**3 Salmonella. Fecal swabs were taken daily for 7 days. Piglets provided pCF1 had decreased SAL shedding compared to untreated controls (controls = 72/72, pCF1 = 10/56 SAL positive fecal swabs). In two separate experiments baby pigs provided a different CE culture (pCF3) one time at farrowing and again at weaning and then 24 hr post weaning challenged with 10**6 (exp 1) or 10**9 (exp 2) SAL. Shedding of SAL was measured for one week post challenge. Fecal SAL shedding was decreased in the 10**6 group from 32% SAL positive in controls to 0% SAL positive in pCF3 treated pigs. In the 10**9 challenged groups fecal SAL shedding was decreased from 81% SAL positive in controls to 44% SAL positive in treated. Results suggest that treatment of pigs with competitive exclusion cultures can decrease fecal SAL shedding in baby and weaned pigs.