Immune-modulatory effects of dietary Saccharomyces cerevisiae cell wall in broiler chickens inoculated with Escherichia coli lipopolysaccharide.

摘要: Abstract 1. An experiment was conducted to study the effect of yeast (Saccharomyces cerevisiae) cell wall (YCW) supplemented in diets broiler chickens challenged with Escherichia coli lipopolysaccharide (LPS). 2. One-day-old chicks were randomly distributed into 24 cages (6 replicate cages; 8 birds/cage) and inoculated 0 or 1 mg/kg body weight E. coli-LPS (d 4 9) 500 mg YCW/kg feed, resulting a 2 × 2 factorial arrangement treatments. Experimental did not include coccidiostats, in-feed antibiotics enzymes. 3. On d 21, inoculation reduced gain feed intake increased conversion ratio (FCR) birds, an maintained until 28 d. In contrast, given YCW improved FCR at both 21 age. 4. challenge relative bursa Fabricius, except when YCW, which resulted interaction. Supplementation exacerbated cel...