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Advances in Nutritional Manipulation of Rumen Fermentation: Second Edition
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Advances in Nutritional Manipulation of Rumen Fermentation: Second Edition

A special issue of Animals (ISSN 2076-2615). This special issue belongs to the section "Animal Nutrition".

Deadline for manuscript submissions: 31 July 2026 | Viewed by 1430

Special Issue Editor

Dr. Lizhi Wang

E-Mail Website
Guest Editor
Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China
Interests: ruminant; ruminant nutrition; rumen fermentation; ruminal microbiota; rumen bloat; rumen acidosis; methane emission; nutritional manipulation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The rumen is an essential digestive organ in ruminants, containing a numerous amount of complicated microorganisms for fermentation. The rumen fermentation process not only affects the utilization efficiency of animal feed, but is also a crucial factor affecting animal production efficiency and methane emissions. It is worth noting that aberrant rumen fermentation can cause rumen acidosis, rumen bloat, and other diseases, and even animal death in severe circumstances. Nutritional manipulation is an important method employed in order to affect rumen fermentation. Scientific and reasonable nutrition manipulation can enhance feed utilization efficiency in ruminants by regulating rumen fermentation, reducing the occurrence of rumen disorders, lowering production costs, mitigating rumen methane emissions, and enhancing the efficiency of ruminant breeding.

Considering the success of the earlier Special Issue "Advances in Nutritional Manipulation of Rumen Fermentation", we are pleased to launch a second Special Issue on the topic, welcoming original research and review papers that address the latest nutrition manipulation theories, methods, and technologies affecting rumen fermentation, including effects on the rumen microbial structure, improving the efficiency of rumen microbial synthesis and nutrient degradation, preventing rumen acidosis and bloating, promoting rumen tissue development and repair, and reducing rumen methane emission via nutrition manipulation methods. Other topics related to the nutritional manipulation of rumen fermentation are also welcome.

We look forward to receiving your contributions.

Dr. Lizhi Wang
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 250 words) can be sent to the Editorial Office for assessment.

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. Animals is an international peer-reviewed open access semimonthly 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 2400 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

  • ruminant
  • nutritional manipulation
  • ruminal microbiota
  • rumen fermentation
  • rumen bloat
  • rumen acidosis
  • methane emission
  • rumen degradation

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Related Special Issue

Published Papers (2 papers)

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Research

17 pages, 517 KB  
Article
Effects of L-Valine Supplementation in Low-Nitrogen Diets on Rumen Fermentation Parameters, Predicted Methane Emissions Production, and Microbial Communities In Vitro
by Chuang Li, Yang Liu, Tianao Yang, Zhanyuan Chen, Guotuo Jiang, Kailun Yang and Mengzhi Wang
Animals 2026, 16(7), 1049; https://doi.org/10.3390/ani16071049 - 30 Mar 2026
Abstract
Few studies have investigated the effects of L-valine (L-Val) supplementation on in vitro rumen fermentation parameters and methane (CH4) production in low-nitrogen diets for ruminants. Therefore, we examined the impact of L-Val supplementation in low-protein diets on in vitro rumen fermentation [...] Read more.
Few studies have investigated the effects of L-valine (L-Val) supplementation on in vitro rumen fermentation parameters and methane (CH4) production in low-nitrogen diets for ruminants. Therefore, we examined the impact of L-Val supplementation in low-protein diets on in vitro rumen fermentation parameters, CH4 production, and microbial community structure. Two crude protein (CP) levels and 4 L-Val levels were tested as follows: CON group (Control group with 14.05% CP), LD group (low-nitrogen diets with 11.26% CP), LVA group (LD group + 0.25% L-Val), LVB group (LD group + 0.5% L-Val), LVC group (LD group + 0.75% L-Val), and LVD group (LD group + 1% L-Val). The experiment was conducted at five time points (2 h, 4 h, 8 h, 12 h, 24 h), with three replicates per treatment at each time point. Results indicated the following: (1) Fermentation pH decreased overall with time; at each time point, the LVB group exhibited the highest pH, significantly higher than the LD, LVC, and LVD groups (p < 0.05). (2) Ammonia nitrogen (NH3-N) concentration increased over time, with LVA~LVD groups showing higher levels than the LD group at 24 h, while showing no difference compared to the CON group (p > 0.05). (3) Microbial protein (MCP) trends aligned with NH3-N, with the LVB group exhibiting higher MCP than the LD group, while showing no difference compared to the CON group (p > 0.05). (4) Compared to the LD group, adding 0.5~1% L-Val increased acetic acid, total VFA (TVFA), and isobutyric acid concentrations at 4 h, 8 h, and 24 h fermentation (p < 0.05). (5) The LVB group exhibited higher proportions of protozoa and Fibrobacter succinogenes (F. succinogenes) compared to the LD group (p < 0.05). The proportion of F. succinogenes showed no significant difference from the CON group (p > 0.05), while the proportion of Butyrivibrio fibrisolvens (B. fibrisolvens) decreased when L-Val addition exceeded 0.5%. (6) Correlation analysis revealed positive correlation between protozoa and TVFA (R = 0.512, p = 0.030). Isobutyric acid showed positive correlations with protozoa, B. fibrisolvens, and F. succinogenes (p < 0.05). In summary, under the present experimental conditions, the addition of 0.5% L-Val to a low-nitrogen diet did not affect predicted CH4 production, but improved other in vitro rumen fermentation parameters, including acetate, isobutyrate and MCP. Meanwhile, it favored the growth and proliferation of the fibrolytic bacteria (B. fibrisolvens and F. succinogenes). This provides a theoretical basis for the rational formulation of low-nitrogen diets for sheep. Full article
(This article belongs to the Special Issue Advances in Nutritional Manipulation of Rumen Fermentation: Second Edition)
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11 pages, 222 KB  
Article
Effects of Rumen-Protected Taurine Supplementation on Ruminal Fermentation, Hematological Profiles, Liver Function, and Immune Responses in Yaks
by Shoupei Zhao, Lianghao Lu, Yuanyuan Chen, Huaming Yang, Bao Zhang, Mingyu Cao, Wenju Chao, Wanchao Xue, Xiaorong Fan, Jianxin Xiao, Rui Hu, Quanhui Peng, Lizhi Wang, Zhisheng Wang and Bai Xue
Animals 2025, 15(13), 1929; https://doi.org/10.3390/ani15131929 - 30 Jun 2025
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Abstract
The present study evaluated the effects of dietary rumen-protected taurine (RPT) supplementation on ruminal fermentation, hematological parameters, liver function, stress-related hormones, and immune responses in yaks. Eighteen yaks were randomly allocated to three groups: a control group receiving no RPT (CON), a low-dose [...] Read more.
The present study evaluated the effects of dietary rumen-protected taurine (RPT) supplementation on ruminal fermentation, hematological parameters, liver function, stress-related hormones, and immune responses in yaks. Eighteen yaks were randomly allocated to three groups: a control group receiving no RPT (CON), a low-dose group receiving 20 g/day (RPT20), and a high-dose group receiving 40 g/day (RPT40). Supplementation with RPT did not significantly affect ruminal pH, microbial protein concentration, ammonia nitrogen, total volatile fatty acids, or the individual volatile fatty acid profiles (p > 0.05). A decreasing trend in red blood cell count was observed (p = 0.050), while no significant changes were detected in white blood cell or platelet indices (p > 0.05). Liver function markers, including albumin, alanine transaminase, aspartate transaminase, and total protein, remained unchanged, although a trend toward altered alkaline phosphatase activity was noted (p = 0.074). No significant effects were observed on acute-phase proteins (serum amyloid A, C-reactive protein) or stress-related hormones (epinephrine, adrenocorticotropic hormone, cortisol) (p > 0.05). Importantly, serum immunoglobulin A and immunoglobulin G levels were significantly increased in response to RPT supplementation (p = 0.029 and p = 0.043, respectively), suggesting enhanced humoral immunity. These findings indicate that RPT may improve immune function in yaks without negatively affecting rumen fermentation or liver health. Full article
(This article belongs to the Special Issue Advances in Nutritional Manipulation of Rumen Fermentation: Second Edition)
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