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  • Title: Effect of cecal cultures lyophilized in skim milk or reagent 20 on Salmonella colonization in broiler chicks.
    Author: Hollister AG, Corrier DE, Nisbet DJ, Beier RC, DeLoach JR.
    Journal: Poult Sci; 1994 Sep; 73(9):1409-16. PubMed ID: 7800640.
    Abstract:
    Mixed cultures of cecal bacteria that were grown under continuous flow anaerobic conditions were prepared as lyophilized powder in skim milk or Reagent 20 (R-20; a mixture containing sucrose and bovine serum albumin fraction V) and compared with broth cultures for reduction of Salmonella typhimurium enteric colonization. Day old broiler chicks were provided a standard corn-soybean diet with: 1) no culture, (control); 2) broth culture administered by crop gavage; 3) broth culture added to the drinking water; 4) culture lyophilized in skim milk and added to drinking water; 5) culture lyophilized in skim milk in gelatin capsules and force-fed; 6) culture lyophilized in R-20 and added to drinking water; and 7) culture lyophilized in R-20 in gelatin capsules and force-fed. All groups were challenged on Day 3 with 10(4) cfu of S. typhimurium per chick. Culture by crop gavage, culture in the drinking water, skim milk powder in capsules, and R-20 powder in the water and in capsules significantly (P < .05) reduced mean Salmonella colony-forming units in cecal contents by 3.21 to 5.26 log10 units at 10 d of age. Likewise, the number of cecal-culture-positive chicks in the same groups was significantly less than controls with reductions of 27 to 67%. The numbers of Salmonella per gram of cecal contents and the percentage of cecal-culture-positive chicks in the skim milk powder in the drinking water group were not different from control chicks in one of two experiments.(ABSTRACT TRUNCATED AT 250 WORDS)
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