The digestive and reproductive tract microbiotas and their association with body weight in laying hens

Su, Yuan; Ge, Yile; Xu, Zhongxian; Zhang, Dejing; Li, Diyan

doi:10.1016/j.psj.2021.101422

Cited by 18 publications

(19 citation statements)

References 72 publications

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“…At the phylum level, obese animals and humans exhibit an increased abundance of Firmicutes and a decreased abundance of Bacteroidetes ( 40 ). In this study, the ratio of Firmicutes to Bacteroidetes in HW was higher than that in LW, which was consistent with previous studies ( 39 , 40 ), indicating that these may be common phenomena.…”

Section: Discussionsupporting

confidence: 93%

“…Increased microbial competition leads to reduced diversity and more benefits for the host ( 32 ). We found that HW had a lower alpha diversity, although not significant ( P > 0.05), which is consistent with findings in 300-day-old laying hens ( 39 ). At the phylum level, obese animals and humans exhibit an increased abundance of Firmicutes and a decreased abundance of Bacteroidetes ( 40 ).…”

Section: Discussionsupporting

confidence: 91%

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Dynamic Changes in the Gut Microbial Community and Function during Broiler Growth

Yang

Shi

et al. 2022

Microbiol Spectr

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Section: Discussionsupporting

confidence: 93%

Section: Discussionsupporting

confidence: 91%

Dynamic Changes in the Gut Microbial Community and Function during Broiler Growth

Yang

Shi

et al. 2022

Microbiol Spectr

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“…The development of hens during the brooding stage reflects their reproductive performance. BW of hens at the beginning of laying production is a significant factor influencing laying performance; heavier hens produce larger eggs than lighter hens [ 28 , 29 ]. Therefore, in the brooding stage, efforts should be made to ensure the healthy weight of the hens, which will lay the foundation for the high production of laying hens in the future to obtain the best egg production effect and the best economic benefit.…”

Section: Discussionmentioning

confidence: 99%

Phosphorus Restriction in Brooding Stage Has Continuous Effects on Growth Performance and Early Laying Performance of Layers

Lan

XiaoYi

Zhao

et al. 2021

Animals

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This study evaluated the effects of phosphorus restriction in the brooding stage and subsequent recovery on growth performance, tibia development and early laying performance of layers. 360 one-day-old hens were randomly divided into 4 groups with 6 replicates and 15 chicks per replicate. Chicks were fed diets containing 0.13% (L), 0.29% (M), 0.45% (N), 0.59% (H) non-phytate phosphorus (nPP) from 1 to 8 weeks of age. From 9 to 20 weeks of age, the L and N group were divided into two groups fed normal level phosphorus (n, 0.39% nPP) and high-level phosphorus (h, 0.45% nPP) separately, then all the birds were fed a normal diet (0.39% nPP) from 21 to 26 weeks of age. Four treatments were tested: Ln, Lh, Nn, and Nh. The lower body weight, average daily feed intake, tibia length and daily tibial increment were observed in the L group (p < 0.05) and the ratio of feed to gain was significantly increased in the L group at 8 weeks of age (p < 0.05). In addition, the fresh and degreased tibia weight, bone ash, Ca content in the tibia and P content in the ash and tibia were significantly decreased in the L group at 8 weeks of age (p < 0.05). After compensatory processes, there was no significant difference in tibia characters; however, body weight in the Ln group was significantly lower than in the Nn group (p < 0.05) and was significantly lower in the Lh group than the Nn group (p < 0.01) and Nh group (p < 0.05). In addition, the laying rate and average daily egg mass in the Lh group were lower than Nn and Nh (p < 0.05). In conclusion, severe dietary phosphorus restriction impaired growth performance and bone mineralization in the brooding stage. Subsequent phosphorus supplementation could not alleviate this adverse effect on body weight, which continued to affect egg production. These findings give a foundation and new perspective on a low phosphorus feeding strategy in layer production.

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“…The R software was used to analyze the differences between β-diversity indices. Linear discriminant analysis (LDA) and its effect size (LEfSe) were performed to identify the bacterial taxa between healthy and diarrhea groups, which considered an LDA score >4 as significant (Su et al, 2021a ).…”

Section: Methodsmentioning

confidence: 99%

“…The enrichment of metabolic pathways of differential metabolites was performed when the ratio was satisfied by x/n > y/N. On the other hand, the metabolic pathways were considered to be enriched statistically significantly when the p -value of the metabolic pathways was <0.05 (Su et al, 2021a ).…”

Section: Methodsmentioning

confidence: 99%

Microbiome, Transcriptome, and Metabolomic Analyses Revealed the Mechanism of Immune Response to Diarrhea in Rabbits Fed Antibiotic-Free Diets

et al. 2022

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In this study, diarrhea was induced in rabbits by feeding them antibiotic-free feed. The gut provides important defense against the barriers of the body, of which the duodenum is an important part to help digest food and absorb nutrients. However, the mechanisms underlying the roles of the gut microbiome and fecal metabolome in rabbit diarrhea caused by feeding an antibiotic-free diet have not been characterized. Recently, only a single study has been conducted to further characterize the antibiotic-free feed additives that caused diarrhea in weaned rabbits. The multi-omics techniques, including 16S rRNA sequencing, transcriptome sequencing, and LC-MS analysis, were combined to analyze the gut microbial compositions and functions. They also determined the fecal metabolomic profiles of diarrhea in rabbits caused by feeding antibiotic-free feed. The results showed that the liver, duodenal, and sacculus rotundus tissues of diarrhea rabbits were diseased, the composition of intestinal microbes was significantly changed, the diversity of intestinal microbes was decreased, and the distribution of intestinal microbe groups was changed. Functional analysis based on the cluster of GO and KEGG annotations suggested that two functional GO categories belonged to the metabolism cluster, and five KEGG pathways related to the metabolic pathways were significantly enriched in diarrhea rabbits. Moreover, real-time quantitative PCR (RT-qPCR) was used to verify the significant expression of genes related to diarrhea. Metabolomics profiling identified 432 significantly differently abundant metabolites in diarrhea rabbits, including amino acids and their derivatives. These amino acids were enriched in the tryptophan metabolic pathway. In addition, the functional correlation analysis showed that some altered gut microbiota families, such as Parasutterella, significantly correlated with alterations in fecal metabolites. Collectively, the results suggested that altered gut microbiota was associated with diarrhea caused by antibiotic-free feed additives in weaned rabbit pathogenesis.

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The digestive and reproductive tract microbiotas and their association with body weight in laying hens

Cited by 18 publications

References 72 publications

Dynamic Changes in the Gut Microbial Community and Function during Broiler Growth

Dynamic Changes in the Gut Microbial Community and Function during Broiler Growth

Phosphorus Restriction in Brooding Stage Has Continuous Effects on Growth Performance and Early Laying Performance of Layers

Microbiome, Transcriptome, and Metabolomic Analyses Revealed the Mechanism of Immune Response to Diarrhea in Rabbits Fed Antibiotic-Free Diets

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