The Impact of Distillers Dried Yeast on the Production Performance and Fecal Microbiome of Broiler Chickens

Artur Rybarczyk (), Elżbieta Bogusławska-Wąs, Kamil Sierżant and Izabella Tobolska
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Artur Rybarczyk: Department of Animal Nutrition and Feed Science, Wrocław University of Environmental and Life Sciences, Chełmońskiego 38C, 51-630 Wrocław, Poland
Elżbieta Bogusławska-Wąs: Department of Applied Microbiology and Human Nutrition Physiology, West Pomeranian University of Technology, ul. Papieża Pawła VI 3, 71-459 Szczecin, Poland
Kamil Sierżant: Department of Animal Nutrition and Feed Science, Wrocław University of Environmental and Life Sciences, Chełmońskiego 38C, 51-630 Wrocław, Poland
Izabella Tobolska: Department of Animal Nutrition and Feed Science, Wrocław University of Environmental and Life Sciences, Chełmońskiego 38C, 51-630 Wrocław, Poland

Agriculture, 2023, vol. 13, issue 11, 1-17

Abstract: The aim of this research was to assess the influence of partially substituting post-extraction soybean meal with distillers dried yeast on the efficiency of broiler chicken fattening and the intestinal microflora.I Inactive distillers dried yeast Saccharomyces cerevisiae , cultivated on wheat extract, was employed in the study. The research was conducted on 112 Ross 308 line cockerels subjected to a 35-day fattening period, during which they were fed Starter (days 1–10), Grower (days 11–27), and Finisher (days 28–35) diets. Broiler chickens were randomly divided into four groups: control and three experimental groups with varying levels of distillers dried yeast—3%, 6%, and 9%. Cockerels in the control group (Starter diet) exhibited higher feed consumption compared to those receiving 3% yeast in their diet. Cockerels in the group receiving 3% yeast (Grower diet) demonstrated better feed conversion compared to those receiving 9% yeast in their diet. The study revealed that regardless of the broiler chicken fattening period, there was a decrease in the overall number of isolated microorganisms in the feces with an increase in the proportion of distillers dried yeast in the diet. This was confirmed by the total number of bacteria, anaerobic bacteria, Enterobacteriaceae , E. coli , Enterococcus sp., and S. aureus . Based on cluster analysis (dendrogram), it was observed that only a 9% addition of yeast to the diet significantly influenced the quantitative and qualitative composition of the fecal microbiota of broiler chickens. In summary, a properly balanced feed with distillery yeast can be used as a good source of energy and protein in feed mixtures for broilers, serving as a cost-effective alternative to soybean meal. However, for optimal production results and feed costs, the inclusion of yeast in the feed should not exceed 3%.

Keywords: chicken; distillers yeast; microbiome; production performance (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2023
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