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{
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"id": "MGYS00005593",
"attributes": {
"samples-count": 150,
"bioproject": "PRJEB29068",
"accession": "MGYS00005593",
"is-private": false,
"last-update": "2020-08-24T18:22:50",
"secondary-accession": "ERP111337",
"centre-name": "NEIKER-Instituto Vasco de Investigacion y Desarrollo Agrario",
"public-release-date": null,
"study-abstract": "Gut microbiota affects health, metabolism and immunity of the host, and in the case of livestock,\nalso food-safety. Here, 16S rRNA gene high-throughput Illumina sequencing was used to describe the\nmicrobiome of chicken caeca in two different breeds and management systems throughout their whole\nproductive lifespan. Broilers (Ross-308), as a fast-growing breed reared in an intensive system for 42-\ndays, and a slow-growing breed of chicken (Sasso-T451A) reared in an extensive farming system with\noutdoor access for 86-days, were compared. The core microbiome and differentially abundant taxa,\nas well as taxa associated with age were identified. Age was identified as the strongest influencing\nfactor in caecal microbiota composition, and, in general, each age-group showed an age-associated\ncommunity profile, with a transition period at the middle of their lifespan. However, substantial\ndifferences were observed in the composition of caecal microbiota of both chicken breeds, microbiota\nbeing richer and more complex in free-range chicken than in broilers. Several taxa positively/negatively\ncorrelated with Campylobacter relative abundance were also identified. Especially noteworthy was\nthe identification by microbial community comparison of microbiota profiles suggestive of dysbiosis in\nseveral free-range chickens, probably associated to the typhlitis observed in the lumen of their caeca.",
"study-name": "16S rRNA amplicon sequencing characterization of caecal microbiome composition of broilers and free-range slow-growing chickens throughout their productive lifespan",
"data-origination": "SUBMITTED"
},
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"id": "root:Host-associated:Birds:Digestive system:Ceca",
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