Abstract
Increasing interest in multiple strain Bacillus probiotics and parietal yeast fractions as feed ingredients for egg laying hen diets has also led to food safety questions. This study was undertaken to evaluate the ability of these products to reduce Salmonella Enteritidis colonization. Sixty Hy-Line hens aged 56 weeks were placed in individual cages and fed a mash diet containing one of the following treatments, control, Bacillus spp. probiotic, yeast cell wall, or a combination of yeast cell wall and Bacillus probiotic. At 60 weeks of age all hens were challenged orally with 7 x 107 CFU/bird of Salmonella Enteritidis. At 61 weeks of age, birds were humanely euthanized, by cervical dislocation and the ceca aseptically removed and cultured for S. Enteritidis prevalence and number by the Most Probable Number method. There was no significant difference in prevalence of Salmonella Enteritidis between the control and any treatments. The control birds had 4.37 log10 MPN/g of S. Enteritidis detected in the ceca. The Probiotic group had 2.96 MPN/g, a reduction of 1.41(p<0.05) and the yeast cell wall group had 2.89 MPN/g a reduction of 1.48 (p<0.05). The combination had 3.60 MPN/g a numerical reduction of 0.78 (p=0.14). The yeast cell wall and Bacillus probiotic groups significantly reduced the amount of Salmonella Enteritidis in the ceca of the laying hens.
Highlights
Salmonella is commonly associated with poultry and poultry products, often resulting in highly publicized outbreaks of foodborne illnesses
It has been shown that Bacillus spp. probiotics can improve the efficiency of feed to gain nutrient utilization, and other production eRBCA-2020-1418
This study focused on demonstrating the potential of a specific yeast cell wall, a multispecies probiotic, and their combination to reduce intestinal colonization of laying hens by Salmonella Enteritidis
Summary
Salmonella is commonly associated with poultry and poultry products, often resulting in highly publicized outbreaks of foodborne illnesses. Bacillus spp. delivered in feed has shown reduced Salmonella counts in the intestine, crop, and ceca. Mannanoligosaccharide supplementation has shown reduced Salmonella Enteritidis shedding from broiler chickens (Lourenço, 2015). Mannose from Saccharomyces cerevisiae has shown consistent potential for the binding of pathogenic bacteria with type-1 fimbriae, such as Salmonella, which can in turn lower CFU counts and prevalence in intestinal and fecal content culture (Oyofo, 1989; Hooge, 2004; Cortés-Coronado, 2017). Enteritidis (Price, 2019b) have all been shown to have reduced numbers in poultry cecal by a commercially available yeast cell wall. This study focused on demonstrating the potential of a specific yeast cell wall, a multispecies probiotic, and their combination to reduce intestinal colonization of laying hens by Salmonella Enteritidis
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
