Impact of industrial production system parameters on chicken microbiomes: mechanisms to improve performance and reduce C
- PDF / 3,361,264 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 28 Downloads / 194 Views
RESEARCH
Open Access
Impact of industrial production system parameters on chicken microbiomes: mechanisms to improve performance and reduce Campylobacter Aaron McKenna1,4†, Umer Zeeshan Ijaz2†, Carmel Kelly3, Mark Linton3, William T. Sloan2, Brian D. Green4, Ursula Lavery1, Nick Dorrell5, Brendan W. Wren5, Anne Richmond1, Nicolae Corcionivoschi3*† and Ozan Gundogdu5*†
Abstract Background: The 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. Results: Our 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 (Continued on next page)
* Correspondence: [email protected]; [email protected] † Aaron McKenna and Umer Zeeshan Ijaz are joint first authors. Nicolae Corcionivoschi and Ozan Gundogdu jointly directed this work. 3 Food Microbiology Unit, Agri-Food and Biosciences Institute, Newforge Lane, Belfast BT9 5PX, UK 5 Faculty of Infectious & Tropical Diseases, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK Full list of author information is available at the end of the article © The Author(s). 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the sourc
Data Loading...
