Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
6.4
4.5
Journals
Microorganisms
Special Issues
Animal Diets: Determinants of Gastrointestinal Microbiota Composition in Animals
share announcement

Animal Diets: Determinants of Gastrointestinal Microbiota Composition in Animals

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Veterinary Microbiology".

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 4968

Special Issue Editor

Dr. Yuxin Yang

E-Mail Website
Guest Editor
College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
Interests: rumen microbiota ruminant nutrition microbial cellulose utilization

Special Issue Information

Dear Colleagues,

The gastrointestinal tract, the place in which organisms digest and utilize food, contains an abundance of microorganisms, and food in the gastrointestinal tract provides necessary nutrients for the proliferation of microorganisms. Different microorganisms need different nutrients, and even some microorganisms cannot only use or produce intermediate metabolites. Therefore, the composition and function of gastrointestinal microorganisms are affected by diet, and it is essential to comprehend the regulation process; a complex network of interactions between host, microorganisms, and environment. Increased knowledge of the regulation process for animals by diet will help us find strategies for the advancement of livestock husbandry.

In this Special Issue, we kindly invite the research community to submit original research papers and reviews that provide the newest insights into the changes in the structure of the microbiome by the regulation of diet (including feed additive, new feed resources and feeding mode, etc.) to better investigate how we can use or manipulate microbiomes for achieving enhanced livestock husbandry production to serve the human population.

Dr. Yuxin Yang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Microorganisms is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • animal
  • feed additive
  • feed resources
  • feeding method
  • intestinal microorganisms
  • rumen microorganisms
  • anmial health

Published Papers (3 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

Jump to: Review

24 pages, 4932 KiB  
Article
Effects of Increasing Levels of Purified Beta-1,3/1,6-Glucans on the Fecal Microbiome, Digestibility, and Immunity Variables of Healthy Adult Dogs
by Pedro Henrique Marchi, Thiago Henrique Annibale Vendramini, Rafael Vessecchi Amorim Zafalon, Leonardo de Andrade Príncipe, Cinthia Gonçalves Lenz Cesar, Mariana Pamplona Perini, Thaila Cristina Putarov, Cristina Oliveira Massoco Salles Gomes, Júlio Cesar de Carvalho Balieiro and Marcio Antonio Brunetto
Microorganisms 2024, 12(1), 113; https://doi.org/10.3390/microorganisms12010113 - 5 Jan 2024
Cited by 1 | Viewed by 1179
Abstract
Yeast-purified beta-1,3/1,6-glucans (BG) can modulate dogs’ immune systems and microbiome, but the optimal inclusion dose remains unknown. The aim of the study was to evaluate the effects of 0.0, 0.07, 0.14, and 0.28% inclusion of BG in a dry extruded diet on the [...] Read more.
Yeast-purified beta-1,3/1,6-glucans (BG) can modulate dogs’ immune systems and microbiome, but the optimal inclusion dose remains unknown. The aim of the study was to evaluate the effects of 0.0, 0.07, 0.14, and 0.28% inclusion of BG in a dry extruded diet on the digestibility, immunity, and fecal microbiota of healthy adult dogs. Eight male and female border collies [n = 4; body condition score (BCS) = 5] and English cocker spaniels (n = 4; BCS = 5), aged 3.5 ± 0.5 years, were randomly distributed into two 4 × 4 balanced Latin squares. Fecal microbiota (using 16S rRNA sequencing, Illumina®), apparent digestibility coefficients (ADC) of nutrients, fecal concentrations of short-chain fatty acids (SCFA) and branched-chain fatty acids (BCFA), ammoniacal nitrogen, lactic acid, IgA and pH, lymphocyte immunophenotyping, intensity and percentage of phagocytosis and oxidative burst were determined. No differences were observed in Faith (p = 0.1414) and Pielou-evenness (p = 0.1151) between treatments, but beta diversity was different between 0.0% and 0.14% BG groups (p = 0.047). Moreover, the Firmicutes phylum was the most abundant in all groups and exhibited the highest relative abundance after the consumption of 0.14% BG, a finding considered beneficial for the canine microbiome. The Erysipelotrichaceae and Ruminococcaceae families, along with the Faecalibacterium and Prevotella genera, considered favorable for their involvement in butyrate production and other metabolites, showed increased abundance after the consumption of 0.14% BG. The potentially pathogenic Proteobacteria phylum displayed lower abundance after the consumption of 0.14% BG. Fecal concentrations of the evaluated compounds and pH did not differ after consumption of the BG at all percentages. Higher crude protein ADC was found after 0.14 and 0.28% BG consumption (p < 0.0001), but no differences were found for other nutrients. Phagocytosis, oxidative burst, and lymphocyte populations were not modulated by any of the treatments; however, 0.14% BG modulated the lymphocyte T CD4+:CD8+ ratio (p = 0.0368), an important marker of immune system efficiency. The inclusion of 0.14% BG resulted in the best responses and was the best dose evaluated. Full article
(This article belongs to the Special Issue Animal Diets: Determinants of Gastrointestinal Microbiota Composition in Animals)
►▼ Show Figures

Figure 1

18 pages, 3746 KiB  
Article
Integrated Microbiota and Metabolome Analysis to Assess the Effects of the Solid-State Fermentation of Corn–Soybean Meal Feed Using Compound Strains
by Yue Li, Qinghong Hao, Chunhui Duan, Yawei Ding, Yuanyuan Wang, Xiaojun Guo, Yueqin Liu, Yunxia Guo and Yingjie Zhang
Microorganisms 2023, 11(5), 1319; https://doi.org/10.3390/microorganisms11051319 - 17 May 2023
Viewed by 1607
Abstract
Solid-state fermentation is known to improve plant-based feed nutritional quality; however, the association between microbes and metabolite production in fermented feed remains unclear. We inoculated corn–soybean–wheat bran (CSW) meal feed with Bacillus licheniformis Y5-39, Bacillus subtilis B-1, and lactic acid bacteria RSG-1. Then, [...] Read more.
Solid-state fermentation is known to improve plant-based feed nutritional quality; however, the association between microbes and metabolite production in fermented feed remains unclear. We inoculated corn–soybean–wheat bran (CSW) meal feed with Bacillus licheniformis Y5-39, Bacillus subtilis B-1, and lactic acid bacteria RSG-1. Then, 16S rDNA sequencing and untargeted metabolomic profiling were applied to investigate changes in the microflora and metabolites, respectively, and their integrated correlations during fermentation were assessed. The results indicated that trichloroacetic acid soluble protein levels showed a sharp increase, while glycinin and β-conglycinin levels showed a sharp decrease in the fermented feed, as confirmed by sodium dodecyl sulfate–polyacrylamide gel electrophoresis. Pediococcus, Enterococcus, and Lactobacillus were predominant in the fermented feed. Overall, 699 significantly different metabolites were identified before and after fermentation. Arginine and proline, cysteine and methionine, and phenylalanine and tryptophan metabolism were the key pathways, with arginine and proline metabolism being the most important pathway in the fermentation process. By analyzing the correlation between the microbiota and metabolite production, lysyl–valine and lysyl–proline levels were found to be positively correlated with Enterococcus and Lactobacillus abundance. However, Pediococcus was positively correlated with some metabolites contributing to nutritional status and immune function. According to our data, Pediococcus, Enterococcus, and Lactobacillus mainly participate in protein degradation, amino acid metabolism, and lactic acid production in fermented feed. Our results provide new insights into the dynamic changes in metabolism that occurred during the solid-state fermentation of corn–soybean meal feed using compound strains and should facilitate the optimization of fermentation production efficiency and feed quality. Full article
(This article belongs to the Special Issue Animal Diets: Determinants of Gastrointestinal Microbiota Composition in Animals)
►▼ Show Figures

Figure 1

Review

Jump to: Research

32 pages, 7581 KiB  
Review
Review: Effect of Experimental Diets on the Microbiome of Productive Animals
by Rodrigo Huaiquipán, John Quiñones, Rommy Díaz, Carla Velásquez, Gastón Sepúlveda, Lidiana Velázquez, Erwin A. Paz, Daniela Tapia, David Cancino and Néstor Sepúlveda
Microorganisms 2023, 11(9), 2219; https://doi.org/10.3390/microorganisms11092219 - 31 Aug 2023
Cited by 1 | Viewed by 1662
Abstract
The microorganisms that inhabit the gastrointestinal tract are responsible for multiple chains of reactions that affect their environment and modify the internal metabolism, their study receives the name of microbiome, which has become more relevant in recent years. In the near future, the [...] Read more.
The microorganisms that inhabit the gastrointestinal tract are responsible for multiple chains of reactions that affect their environment and modify the internal metabolism, their study receives the name of microbiome, which has become more relevant in recent years. In the near future, the challenges related to feeding are anticipated to escalate, encompassing the nutritional needs to sustain an overpopulated world. Therefore, it is expected that a better understanding of the interactions between microorganisms within the digestive tract will allow their modulation in order to provide an improvement in the immune system, feed efficiency or the promotion of nutritional characteristics in production animals, among others. In the present study, the main effects of experimental diets in production animals were described, emphasizing the diversity of the bacterial populations found in response to the diets, ordering them between polygastric and monogastric animals, and then describing the experimental diets used and their effect on the microorganisms. It is hoped that this study will help as a first general approach to the study of the role of the microbiome in production animals under different diets. Full article
(This article belongs to the Special Issue Animal Diets: Determinants of Gastrointestinal Microbiota Composition in Animals)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-3
Back to TopTop