Influence of autolyzed whole yeast and yeast components on broiler chickens challenged with salmonella lipopolysaccharide

Abstract

The objective of this study was to assess the effect of dietary yeast products on broiler chickens challenged with salmonella lipopolysaccharide (LPS). The chicks were divided into 8 treatments with 6 replicates and 9 birds per replicate. The treatments consisted of a positive control (PC) [without supplementation and not challenged]; negative control (NC) [without supplementation but challenged]; whole yeast and challenged; yeast cell wall and challenged; yeast glucan and challenged; yeast mannan and challenged; zinc bacitracin and challenged; and Salinomycin and challenged. Whole yeast or Yeast cell wall was included at 2.0 g/kg diet. Yeast glucan or mannan was added at 0.20 g/kg diet. Zinc bacitracin (ZNB) and Salinomycin (SAL) was included at 50 and 60 ppm, respectively. Dietary treatments had no effect (P > 0.05) on feed intake (FI) at day 10. Supplementation with yeast and its derivatives improved (P < 0.05) body weight gain (BWG) and feed conversion ratio (FCR) on day 10. On days 24 and 35, LPS challenge declined FI, BWG, FCR, and flock uniformity (day 28) in the NC group compared to the PC group. Yeast products and antibiotics improved (P < 0.05) FI, BWG, FCR, and flock uniformity in LPS-challenged birds. On day 24, spleen weight increased while bursa weight decreased in the NC group relative to the PC group; this effect was reversed (P < 0.05) by feeding all yeasts and antibiotics. On day 24, application of all the dietary treatments ameliorated the changes observed in white blood cell, lymphocyte and monocyte counts as well as albumin and immunoglobulin G of NC birds. On day 35, all yeasts additives, ZNB and SAL improved (P < 0.05) the meat yield of broilers challenged with LPS. In conclusion, supplementation of diets with yeast and its derivatives can ameliorate the negative effects of salmonella LPS challenge on broiler chicks, thus improving the performance, flock uniformity, and meat yield.

Auto-lysed yeast and yeast extract effects on dry matter intake, blood cells counts, IgG titer and gene expression of IL-2 in lactating dairy cows under heat stress

“…Inconsistence with our finding, results from a study (Van Der Peet-Schwering, Jansman, & Smidt, 2007) showed that yeasts products can lowered the levels of neutrophils in the blood of piglets. Our finding is agreement with the report of Ahiwe et al (2019) who reported dietary supplementation of chickens with whole yeast, yeast cell wall, yeast glucan, and yeast mannan led to decrease (p < 0.05) in lymphocyte and Acta Scientiarum. Animal Sciences, v. 42, e48425, 2020 increase in neutrophil.…”

Effect of red osier dogwood extract on growth performance, blood biochemical parameters, and gut functionality of broiler chickens challenged or unchallenged intraperitoneally with Salmonella Enteritidis lipopolysaccharide

“…Comparing unchallenged versus challenged groups, the relative spleen weight was observed to be significantly higher among birds in the latter compared to the former. According to Ahiwe et al. (2019) , increased spleen weight was reported in broiler chickens challenged with Salmonella Typhimurium LPS.…”

Saccharomyces cerevisiaeas a probiotic feed additive to non and pseudo‐ruminant feeding: a review

“…Eimeria impaired gut function, shifted gut microbiome and performance; yeast nucleotides improved performance independently, attenuated Eimeria damage on indices of gut function and modulated caecal microbiome. In the study of (Ahiwe et al ) reported that whole yeast and its derivatives can improve meat yield of broilers and through its effect on white blood cell, lymphocyte and monocyte counts, may be linked to an amelioration of stress induced by Salmonella lipopolysaccharide in broilers. They also noted that autolysed yeast, yeast cell wall and its enzymatically hydrolysed components when supplemented at 2 g kg −1 diet may act as an appropriate alternative to antibiotics in broilers production.…”