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Veterinary Sciences
Special Issues
Nutritional Health of Monogastric Animals
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Nutritional Health of Monogastric Animals

A special issue of Veterinary Sciences (ISSN 2306-7381). This special issue belongs to the section "Nutritional and Metabolic Diseases in Veterinary Medicine".

Deadline for manuscript submissions: 15 May 2025 | Viewed by 2080

Special Issue Editors

Dr. Ines Andretta

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Guest Editor
Department of Animal Science, Universidade Federal do Rio Grande do Sul, Porto Alegre 90010-150, RS, Brazil
Interests: gut-health; nutrition; pigs; poultry; precision feeding
Dr. Alícia Zem Fraga

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Guest Editor
School of Veterinary, Federal University of Minas Gerais (UFMG), Belo Horizonte 31270-901, MG, Brazil
Interests: poultry; swine; additives; sanitary challenge conditions; intestinal morphology
Dr. Gabriela Miotto Galli

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Guest Editor
Department of Animal Science, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre 90010-150, RS, Brazil
Interests: poultry; swine; intestinal health; additives; metabolism

Special Issue Information

Dear Colleague,

Ensuring the optimal health of monogastric animals is imperative to enhance production efficiency, improve animal welfare, and ultimately meet the demands of global food security within a sustainable framework. Certainly, proper nutrition and well-planned feeding strategies are essential to achieve success in this task. By providing balanced diets tailored to precisely meet animal nutritional requirements, producers can maximize nutrient-use efficiency and elevate the quality of derived animal products while concurrently mitigating adverse environmental impacts; however, feed may have an even more significant impact. Certain feed constituents have the potential to improve gut health, modulate immune responses, diminish disease prevalence, and mitigate antibiotic use.

This Special Issue provides space for original research papers that address the use of nutritional strategies, functional ingredients, or feed additives to maximize the health of monogastric animals. Papers addressing strategies to reduce the use of antibiotics or novel techniques to assess the effects of nutritional health solutions (such as gut health biomarkers) are also invited.

Dr. Ines Andretta
Dr. Alícia Zem Fraga
Dr. Gabriela Miotto Galli
Guest Editors

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. Veterinary Sciences 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 2100 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

  • broilers
  • feed additives
  • gut health
  • inflammation
  • nutrition
  • pigs
  • poultry

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Published Papers (2 papers)

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Research

11 pages, 468 KiB  
Article
Effects of Guanidine Acetic Acid on the Growth and Slaughter Performance, Meat Quality, Antioxidant Capacity, and Cecal Microbiota of Broiler Chickens
by Xuedan Li, Zhimin Chen and Jiantao Li
Vet. Sci. 2024, 11(11), 550; https://doi.org/10.3390/vetsci11110550 - 8 Nov 2024
Viewed by 582
Abstract
The objective of this research was to assess the impact of guanidine acetic acid (GAA) on the growth performance, slaughter outcomes, meat quality, antioxidant capacity, and cecal microbiota of broiler chickens. A total of 128 Arbor Acres broilers were randomly divided into two [...] Read more.
The objective of this research was to assess the impact of guanidine acetic acid (GAA) on the growth performance, slaughter outcomes, meat quality, antioxidant capacity, and cecal microbiota of broiler chickens. A total of 128 Arbor Acres broilers were randomly divided into two experimental groups. One group served as the control and was provided with a standard diet, whereas the group treated with GAA received a diet enhanced with 400 mg/kg of GAA. The duration of the experiment was 42 days. Measurements for growth performance, serum biochemical parameters, and antioxidant capacity were conducted both during and at the conclusion of the study, while assessments of slaughter performance and meat quality were carried out solely at the end. Notable differences were observed in terms of growth performance, blood biochemistry, and metabolic parameters between the control and GAA-treated groups (p < 0.05). Hence, these findings imply that dietary GAA supplementation can favorably affect growth, carcass quality, biochemical indicators, and antioxidant capacity in broiler chickens. Full article
(This article belongs to the Special Issue Nutritional Health of Monogastric Animals)
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12 pages, 2163 KiB  
Article
Citric Acid by-Product Fermentation by Bacillus subtilis I9: A Promising Path to Sustainable Animal Feed
by Sirisak Tanpong, Nalisa Khochamit, Padsakorn Pootthachaya, Wilailak Siripornadulsil, Narirat Unnawong, Anusorn Cherdthong, Bundit Tengjaroenkul and Sawitree Wongtangtintharn
Vet. Sci. 2024, 11(10), 484; https://doi.org/10.3390/vetsci11100484 - 8 Oct 2024
Viewed by 987
Abstract
Citric acid by-products in animal feed pose a sustainability challenge. Bacillus species are commonly used for fermenting and improving the nutritional quality of feedstuffs or by-products. An experiment was conducted to enhance the nutritional value of citric acid by-products through fermentation with Bacillus [...] Read more.
Citric acid by-products in animal feed pose a sustainability challenge. Bacillus species are commonly used for fermenting and improving the nutritional quality of feedstuffs or by-products. An experiment was conducted to enhance the nutritional value of citric acid by-products through fermentation with Bacillus subtilis I9 for animal feed. The experiment was carried out in 500 mL Erlenmeyer flasks with 50 g of substrate and 200 mL of sterile water. Groups were either uninoculated or inoculated with B. subtilis I9 at 107 CFU/mL. Incubation occurred at 37 °C with automatic shaking at 150 rpm under aerobic conditions for 0, 24, 48, 72, and 96 h. Inoculation with B. subtilis I9 significantly increased Bacillus density to 9.3 log CFU/mL at 24 h (p < 0.05). CMCase activity gradually increased, reaching a maximum of 9.77 U/mL at 72 h. After 96 h of fermentation with inoculated B. subtilis I9, the citric acid by-product exhibited a significant decrease (p < 0.05) in crude fiber by 10.86%, hemicellulose by 20.23%, and cellulose by 5.98%, but an increase in crude protein by 21.89%. Gross energy decreased by 4% after inoculation with B. subtilis in comparison to the uninoculated control (p < 0.05). Additionally, the non-starch polysaccharide (NSP) degradation due to inoculation with B. subtilis I9 significantly reduced (p < 0.05) NSP by 24.37%, while galactose, glucose, and uronic acid decreased by 22.53%, 32.21%, and 18.11%, respectively. Amino acid profile content increased significantly by more than 12% (p < 0.05), including indispensable amino acids such as histidine, isoleucine, lysine, methionine, phenylalanine, tryptophan, and valine and dispensable amino acids like alanine, aspartic acid, glutamic acid, glutamine, glycine, proline, and tyrosine. Furthermore, citric acid by-products inoculated with B. subtilis I9 exhibited changes in the cell wall structure under scanning electron microscopy, including fragmentation and cracking. These results suggest that fermenting citric acid by-products with B. subtilis I9 effectively reduces dietary fiber content and improves the nutritional characteristics of citric acid by-products for use in animal feed. Full article
(This article belongs to the Special Issue Nutritional Health of Monogastric Animals)
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