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Impact of industrial production system parameters on chicken microbiomes: mechanisms to improve performance and reduce Campylobacter

  • McKenna, Aaron1, 2
  • Ijaz, Umer Zeeshan3
  • Kelly, Carmel4
  • Linton, Mark4
  • Sloan, William T.3
  • Green, Brian D.2
  • Lavery, Ursula1
  • Dorrell, Nick5
  • Wren, Brendan W.5
  • Richmond, Anne1
  • Corcionivoschi, Nicolae4
  • Gundogdu, Ozan5
  • 1 Moy Park, 39 Seagoe Industrial Estate, Portadown, Craigavon, Co. Armagh, BT63 5QE, UK , Craigavon (United Kingdom)
  • 2 Queen’s University Belfast, Biological Sciences Building, Belfast, BT9 5DL, Northern Ireland , Belfast (United Kingdom)
  • 3 University of Glasgow, Glasgow, G12 8LT, UK , Glasgow (United Kingdom)
  • 4 Agri-Food and Biosciences Institute, Newforge Lane, Belfast, BT9 5PX, UK , Belfast (United Kingdom)
  • 5 London School of Hygiene and Tropical Medicine, Keppel Street, London, WC1E 7HT, UK , London (United Kingdom)
Published Article
Springer (Biomed Central Ltd.)
Publication Date
Sep 09, 2020
DOI: 10.1186/s40168-020-00908-8
Springer Nature


BackgroundThe factors affecting host-pathogen ecology in terms of the microbiome remain poorly studied. Chickens are a key source of protein with gut health heavily dependent on the complex microbiome which has key roles in nutrient assimilation and vitamin and amino acid biosynthesis. The chicken gut microbiome may be influenced by extrinsic production system parameters such as Placement Birds/m2 (stocking density), feed type and additives. Such parameters, in addition to on-farm biosecurity may influence performance and also pathogenic bacterial numbers such as Campylobacter. In this study, three different production systems ‘Normal’ (N), ‘Higher Welfare’ (HW) and ‘Omega-3 Higher Welfare’ (O) were investigated in an industrial farm environment at day 7 and day 30 with a range of extrinsic parameters correlating performance with microbial dynamics and Campylobacter presence.ResultsOur data identified production system N as significantly dissimilar from production systems HW and O when comparing the prevalence of genera. An increase in Placement Birds/m2 density led to a decrease in environmental pressure influencing the microbial community structure. Prevalence of genera, such as Eisenbergiella within HW and O, and likewise Alistipes within N were representative. These genera have roles directly relating to energy metabolism, amino acid, nucleotide and short chain fatty acid (SCFA) utilisation. Thus, an association exists between consistent and differentiating parameters of the production systems that affect feed utilisation, leading to competitive exclusion of genera based on competition for nutrients and other factors. Campylobacter was identified within specific production system and presence was linked with the increased diversity and increased environmental pressure on microbial community structure. Addition of Omega-3 though did alter prevalence of specific genera, in our analysis did not differentiate itself from HW production system. However, Omega-3 was linked with a positive impact on weight gain.ConclusionsOverall, our results show that microbial communities in different industrial production systems are deterministic in elucidating the underlying biological confounders, and these recommendations are transferable to farm practices and diet manipulation leading to improved performance and better intervention strategies against Campylobacter within the food chain.2-kGKSYhGXUTYLrRVi8gEyVideo Abstract

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