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Animals publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Reuse of Agri-Food By-Products in Animal Nutrition and Their Effects on Livestock Performance and Product Quality

edited by

Ainhoa Sarmiento-García

and

Ceferina Vieira Aller

submission deadline 31 Dec 2026 | 2 articles | Viewed by 1837 | Submission Open

Keywords: agri-food by-products; animal nutrition; livestock performance; product quality; sustainability

(This special issue belongs to the Section Animal Nutrition)

Mitochondrial Markers in Aquatic Animals: Evolution, Adaptation, and Conservation

edited by

Chenghe Sun

Lei Xu

and Yangliang Gu

submission deadline 31 Dec 2026 | 4 articles | Viewed by 1483 | Submission Open

Keywords: mitogenomes; mitochondrial genome; molecular evolution; genetic diversity; phylogenetic analyses; conservation genetics; aquatic animals genetics; aquatic animals conservation; genetic markers; population genomics

(This special issue belongs to the Section Animal Genetics and Genomics)

Emerging and Re-Emerging Viral and Bacterial Diseases of Fish: Diagnostic Challenges, Therapeutic Options and Preventive Strategies

edited by

Anurak Uchuwittayakul

submission deadline 31 Dec 2026 | 2 articles | Viewed by 1045 | Submission Open

Keywords: fish viral diseases; bacterial fish diseases; emerging and re-emerging pathogens; diagnostic tools and molecular surveillance; antimicrobial resistance; vaccines and immunoprophylaxis; therapeutic options in aquaculture; biosecurity and disease prevention; probiotics and microbiome modulation; sustainable finfish aquaculture

(This special issue belongs to the Section Aquatic Animals)

Pathogenesis, Immunology and Epidemiology of Veterinary Viruses—2nd Edition

edited by Huisheng Liu

submission deadline 31 Dec 2026 | 1 articles | Viewed by 827 | Submission Open

Keywords: animals; veterinary viruses; pathogenesis; epidemiology; innate immune response; adaptive immune response; cross-species infection; interaction

(This special issue belongs to the Section Veterinary Clinical Studies)

Advances in Cryopreservation of Livestock Oocytes and Embryos

edited by

Chiara Del Prete

and

Valentina Longobardi

submission deadline 31 Dec 2026 | 1 articles | Viewed by 822 | Submission Open

Keywords: vitrification; cryopreservation; gametes; embryo; oocytes; animal reproduction biotechnology; cryoprotective agent; freezability

(This special issue belongs to the Section Animal Reproduction)

Advances in Fish Reproduction and Development

edited by Joanna Nowosad,

Krzysztof Kupren

and

Beata Irena Cejko

submission deadline 31 Dec 2026 | 1 articles | Viewed by 756 | Submission Open

Keywords: aquaculture; cryopreservation; fertilization; fish reproduction; larviculture; ovulation; proteomics; sex steroids; spawning; spermiation; transcriptomics; vitellogenesis; organogenesis; reproductive stress; pollutants and heavy metals; fish reproduction and development

(This special issue belongs to the Section Aquatic Animals)

Effects of Plant Extracts on Meat Quality, Intestinal Microbiota and Resistance to Diseases and Stresses of Food Animals—Second Edition

edited by Shengchen Wang and Yun Hu

submission deadline 31 Dec 2026 | 1 articles | Viewed by 705 | Submission Open

Keywords: plant extracts; feed additives; meat quality; intestinal; microbiota; disease resistance; stress; food animals

(This special issue belongs to the Section Animal Nutrition)

Pathogenic Escherichia coli in Animal Populations: Emerging Risks, Innovations, and Control Strategies

edited by

Kyung-Hyo Do

submission deadline 31 Dec 2026 | 1 articles | Viewed by 661 | Submission Open

Keywords: Pathogenic Escherichia coli; virulence; epidemiology; animal health; antimicrobials; antimicrobial resistance (AMR); whole-genome sequencing; colibacillosis; host– pathogen interactions

(This special issue belongs to the Section Veterinary Clinical Studies)

Emerging Trends and Technological Innovations in Animal Feed and Nutrition

edited by

Anusorn Cherdthong

Chanadol Supapong

and

Chanon Suntara

submission deadline 31 Dec 2026 | 1 articles | Viewed by 500 | Submission Open

Keywords: precision feeding; sustainable nutrition; functional feeds; feed efficiency; biotech feeds

(This special issue belongs to the Section Animal Nutrition)

Prepartum and Postpartum Diseases in Dairy Cattle: Prevention, Diagnosis, and Treatment

edited by

Ottó Szenci

submission deadline 31 Dec 2026 | Viewed by 486 | Submission Open

Keywords: dairy cows; diagnosis; treatment; prevention; prepartum disease; postpartum disease

(This special issue belongs to the Section Animal Reproduction)

New Technology Applications and Developments for Breeding Healthy and Resilient Animals: Precision Livestock Farming, Genomics and Their Interaction—Contributions to the Sustainable Management of the Livestock Sector: Second Edition

edited by

Roberto Steri

and

David Meo Zilio

submission deadline 31 Dec 2026 | Viewed by 426 | Submission Open

Keywords: precision livestock farming; precision feeding; genomics; genetics; large ruminants; small ruminants; poultry; rabbits; welfare; safety; security; resilience; quality products; aquaculture and aquaponics; Artificial Intelligence

(This special issue belongs to the Section Animal Genetics and Genomics)

Surveillance, Epidemiology and Risk Assessment of Highly Pathogenic Avian Influenza in Wild Birds

edited by Chaithep Poolkhet and Sukanya Thongratsakul

submission deadline 31 Dec 2026 | Viewed by 351 | Submission Open

Keywords: highly pathogenic avian influenza; wild birds; disease surveillance; epidemiology; risk assessment; spatial modeling; Bayesian analysis; migratory birds; one health; early warning systems

(This special issue belongs to the Section Birds)

Immune Mechanisms of Aquatic Animals: Genomic and Transcriptomic Perspectives

edited by Liting Wu and Qingjian Liang

submission deadline 31 Dec 2026 | 1 articles | Viewed by 348 | Submission Open

Keywords: aquaculture immunology; disease resistance; host– pathogen interaction; immunometabolism; genomics; transcriptomics; GWAS; RNA-seq; regulatory non-coding RNAs; single-cell sequencing

(This special issue belongs to the Section Aquatic Animals)

Diagnostic Imaging for the Diagnosis and Management of Lameness in the Equine Patient

edited by Nicola Pilati,

Francesca Beccati

and Marco Pepe

submission deadline 31 Dec 2026 | Viewed by 341 | Submission Open

Keywords: horse lameness; equine ultrasound; equine advanced diagnostic imaging; equine radiology; equine sport medicine and rehabilitation

(This special issue belongs to the Section Equids)

New Feed for Optimizing the Gastrointestinal Health and Nutritional Utilization of Poultry and Livestock

edited by Miaomiao Bai,

Hongnan Liu

and Xiaozhen Song

submission deadline 31 Dec 2026 | Viewed by 318 | Submission Open

Keywords: gastrointestinal health; nutrient utilization; new feed; functional additives; poultry and livestock

(This special issue belongs to the Section Animal Nutrition)

Grazing Behavior and Pasture Management for Sustainable Dairy Farming

edited by

Juan Pablo Keim

, Rubén Guillermo Pulido and

Oscar Balocchi

submission deadline 31 Dec 2026 | Viewed by 296 | Submission Open

Keywords: perennial ryegrass; legumes; diverse pasture; grazing management; dairy cows; milk production; green house gas emissions; nutritive value; eating and rumination times

(This special issue belongs to the Section Animal System and Management)

Advances in Understanding the Ecological Impact of Light and Noise Pollution on Amphibians and Reptiles

edited by

Marko Prokic

submission deadline 31 Dec 2026 | Viewed by 271 | Submission Open

Keywords: amphibians; artificial light at night— ALAN; conservation; circadian biorhythm; dark sky; herpetol-ogy; fitness; noise; LED; light pollution; urbanization; reptiles; stress response

(This special issue belongs to the Section Herpetology)

Innovative Strategies for Perioperative Pain Management in Veterinary Surgery

edited by

Alejandro Casas-Alvarado

and

Ismael Hernández-Ávalos

submission deadline 31 Dec 2026 | Viewed by 259 | Submission Open

Keywords: veterinary anesthesia; veterinary surgery; pain; nociception; analgesic protocols; anesthetic monitoring; postoperative care; multimodal pain management

(This special issue belongs to the Section Veterinary Clinical Studies)

Low-Trophic Organisms and Derived Ingredients in Aquaculture Nutrition

edited by Ana Basto and

Diogo Peixoto

submission deadline 31 Dec 2026 | Viewed by 250 | Submission Open

Keywords: insects; microalgae; macroalgae; yeasts; bacteria; fungi; bioactive extracts; sustainable aquaculture; feed technology; feeding behaviour and regulation of feed intake; growth performance and feed efficiency; digestibility and nutrient utilisation; health and welfare; quality for consumers

(This special issue belongs to the Section Aquatic Animals)

Sustainable Equine Nutrition

edited by

Gulsah Kaya Karasu

, Peter Huntington and

Chris W. Rogers

submission deadline 31 Dec 2026 | Viewed by 244 | Submission Open

Keywords: equine nutrition; sustainable feed; sustainable equine nutrition; sustainable forage; sustainable sources

(This special issue belongs to the Section Equids)

Sustainable Nutrition and Breeding Management for Economically Important Aquaculture Fish Species

edited by Eakapol Wangkahart and Chou Min Chong

submission deadline 31 Dec 2026 | Viewed by 228 | Submission Open

Keywords: aquaculture nutrition; functional feeds; selective breeding; nutrigenomics; disease resistance; antimicrobial reduction; sustainable aquaculture; precision feeding; genetic improvement; fish health management

(This special issue belongs to the Section Aquatic Animals)

Improving Animal Welfare: A Key Factor in a Shift Towards More Sustainable Animal Agriculture—2nd Edition

edited by

Luiene M. Rocha

submission deadline 31 Dec 2026 | Viewed by 224 | Submission Open

Keywords: animal welfare assessment; animal-based measures; stress physiology; animal behaviour; decision-support tools; precision livestock farming; artificial intelligence; One Health; One Welfare; sustainability

(This special issue belongs to the Section Animal Welfare)

Artificial Intelligence in Veterinary Medical Imaging and Clinical Applications

edited by

Lio Gonçalves

Mário Ginja

and

Catarina Jota Baptista

submission deadline 31 Dec 2026 | Viewed by 204 | Submission Open

Keywords: artificial intelligence; veterinary medical imaging; deep learning; computer vision; clinical decision support; clinical workflow integration; radiography; ultrasound imaging; explainable AI; diagnostic automation; animal health

(This special issue belongs to the Section Veterinary Clinical Studies)

Equine Veterinary Surgery: Second Edition

edited by

Javier Lopez-Sanroman

and Manuel Iglesias-Garcia

submission deadline 31 Dec 2026 | Viewed by 199 | Submission Open

Keywords: equine; surgery; minimally invasive; orthopedics; colic; integumentary

(This special issue belongs to the Section Equids)

Dietary Components in Animal Nutrition: Favoring Sustainability, Welfare and Safety—Second Edition

edited by

Xihong Zhou

submission deadline 31 Dec 2026 | Viewed by 198 | Submission Open

Keywords: animal health; animal welfare; farm animal; feed components; gut microbiota

(This special issue belongs to the Section Animal Nutrition)

Feed Additives in Poultry Industry

edited by

Dimitrios Galamatis

Ilias Giannenas

and

Vasilios Tsiouris

submission deadline 31 Dec 2026 | Viewed by 193 | Submission Open

Keywords: feed additives; gut health; poultry nutrition; enzymes; phytogenic compounds; immune modulation; poultry production

(This special issue belongs to the Section Poultry)

Insights into Porcine Enteric Virus Infections

edited by Jianing Chen

submission deadline 31 Dec 2026 | Viewed by 172 | Submission Open

Keywords: swine; enteric virus; epidemiology; pathogenesis; immune mechanisms

(This special issue belongs to the Section Pigs)

Staphylococcus spp. in Food-Producing Animals

edited by

Wasana Chaisri

Witaya Suriyasathaporn

and

Veerasak Punyapornwithaya

submission deadline 31 Dec 2026 | Viewed by 170 | Submission Open

Keywords: Staphylococcus spp.; food-producing animal; antimicrobial resistance; one health; S. aureus; epidemiology; pathogenicity; virulent; coagulase-negative staphylococci; immune response

(This special issue belongs to the Section Veterinary Clinical Studies)

Functional Modulators of Mucosal Health in Aquatic Animals

edited by

Patrícia Díaz-Rosales

and

Isabel M. Cerezo Ortega

submission deadline 31 Dec 2026 | Viewed by 167 | Submission Open

Keywords: mucosal health; aquaculture; functional modulators; epithelial integrity; fish health

(This special issue belongs to the Section Aquatic Animals)

Advances in Parasite Ecology for the Control of Wildlife and Domestic Parasitic Diseases

edited by Tiong Kai Tan

submission deadline 31 Dec 2026 | Viewed by 165 | Submission Open

Keywords: parasite ecology; one health; wildlife– livestock interface; disease control; zoonosis; applied epidemiology

(This special issue belongs to the Section Ecology and Conservation)

Non-Invasive Wildlife Disease Surveillance in Amphibians and Reptiles

edited by

Matteo Riccardo Di Nicola

submission deadline 31 Dec 2026 | Viewed by 164 | Submission Open

Keywords: eDNA; EIDs; herpetology; molecular diagnostics; pathogens

(This special issue belongs to the Section Herpetology)

Unraveling the Mysteries of Sea Turtles: Diseases and Well-Being in One Health Framework

edited by

Ludovica Di Renzo

and

Giorgia Gioacchini

submission deadline 31 Dec 2026 | Viewed by 160 | Submission Open

Keywords: sea turtles; health; diseases; welfare; physiology; conservation medicine; environmental stressor; biomarkers; biology; ecology

(This special issue belongs to the Section Herpetology)

Research Advances in the Prenatal and Postnatal Diseases of Livestock

edited by

Adel B. Ghnenis

submission deadline 31 Dec 2026 | Viewed by 149 | Submission Open

Keywords: prenatal development; postnatal diseases; livestock health; fetal programming; maternal nutrition; epigenetics; reproductive physiology; metabolic disorders; disease prevention

(This special issue belongs to the Section Animal Reproduction)

Genomic Analyses of Common Infectious Diseases in Pigs

edited by

Shenglong Wu

and

Zhengchang Wu

submission deadline 31 Dec 2026 | Viewed by 143 | Submission Open

Keywords: pig; infectious diseases; transcriptome; epigenomics; de novo sequencing; codon analysis of genome; GWAS; single-cell genomics

(This special issue belongs to the Section Pigs)

Changes of Hormones and Physiological Adaptation During Pregnancy in Animals

edited by

Francesca Arfuso

Maria Rizzo

and

Giuseppe Piccione

submission deadline 31 Dec 2026 | Viewed by 137 | Submission Open

Keywords: peripartum; mammals; pregnancy; hormones; lactation; stress response

(This special issue belongs to the Section Animal Physiology)

Oocyte–Sperm Interactions in Animal Reproduction

edited by Adel R. Moawad and Inchul Choi

submission deadline 31 Dec 2026 | Viewed by 125 | Submission Open

Keywords: oocyte– sperm interactions; gamete biology; fertilization mechanisms; sperm capacitation; acrosome reaction; zona pellucida; assisted reproductive technologies (ART); embryo development; livestock fertility; reproduc-tive biotechnology

(This special issue belongs to the Section Animal Reproduction)

Avian Virus Transmission and Prevention Strategies

edited by Eszter Kaszab and

Enikő Fehér

submission deadline 31 Dec 2026 | Viewed by 119 | Submission Open

Keywords: epidemiology; One Health; avian viruses; molecular evolution; cross-species transmission; virus– host transmission; prevention and control; virus ecology

(This special issue belongs to the Section Poultry)

Regulatory Effects and Mechanisms of Botanical-Origin Feed Additives on the Intestinal Microbiota in Animals

edited by

Baocheng Hao

submission deadline 31 Dec 2026 | Viewed by 119 | Submission Open

Keywords: gut microbiota; phytogenics; herbs; antibiotic alternative; feed additives

(This special issue belongs to the Section Animal Nutrition)

Advances in Ruminant Production and Nutrigenomics

edited by

Germán Darío Ramírez-Zamudio

Karolina Batista Nascimento

Paulo R. Leme

and

Carl Dahlen

submission deadline 31 Dec 2026 | Viewed by 104 | Submission Open

Keywords: ruminant nutrition; nutrigenomics; functional genomics; feed efficiency; metabolic regulation; multi-omics; sustainable production

(This special issue belongs to the Section Animal Nutrition)

Advances in Animal Product Quality: Nutrition and Physiological Mechanisms in Livestock

edited by

Chanporn Chaosap

, Panneepa Sivapirunthep and Kazeem Adeyemi

submission deadline 31 Dec 2026 | Viewed by 56 | Submission Open

Keywords: animal product quality; livestock nutrition; meat quality; egg quality; functional feed additives; gut health; physiological mechanisms; metabolic regulation; sustainable production; precision nutrition

(This special issue belongs to the Section Animal Products)

Advancements in Molecular Diagnosis and Treatment of Melanoma in Animals

edited by Juhyun An

submission deadline 31 Dec 2026 | Submission Open

Keywords: melanoma; veterinary oncology; molecular diagnostics; tumor microenvironment; immunotherapy; extracellular vesicles; precision medicine; comparative oncology

(This special issue belongs to the Section Veterinary Clinical Studies)

Effect of the Microbiome on Oral and Systemic Health in Companion Animals

edited by

Jamie Gail Anderson

and Maria M. Soltero-Rivera

submission deadline 1 Jan 2027 | 1 articles | Viewed by 3308 | Submission Open

Keywords: oral; microbiome; dysbiosis; mucosal immune system; next-generation-sequencing; metatranscriptomics; veterinary companion animal health

(This special issue belongs to the Section Companion Animals)

Monitoring and Management of Viral Diseases in Wildlife

edited by Sílvia C. Barros and

Fábio Abade dos Santos

submission deadline 10 Jan 2027 | Viewed by 304 | Submission Open

Keywords: animal health; wildlife diseases; zoonoses; pathogen ecology; host– pathogen interactions; surveillance; molecular diagnostics; One Health

(This special issue belongs to the Section Wildlife)

Genetics and Genomics of Livestock Health, Fertility and Product Quality: 3rd Edition

edited by

Michael E. Davis

submission deadline 15 Jan 2027 | 3 articles | Viewed by 1966 | Submission Open

Keywords: animal; genetics; genomics; production; product quality; reproduction; fertility; health; welfare

(This special issue belongs to the Section Animal Genetics and Genomics)

Breeding Soundness Examinations of Rams: Semen Collection and Evaluation

edited by Aikaterini Ntemka and

Noelia González Orti

submission deadline 15 Jan 2027 | 2 articles | Viewed by 1769 | Submission Open

Keywords: breeding soundness evaluation; semen collection; semen assessment; ram; fertility; reproductive capacity; herd sustainability

(This special issue belongs to the Section Animal Reproduction)

Recent Advances in Companion Animal Surgery and Perioperative Therapeutic Strategies

edited by Seung-Hyun Kim and Chun-Sik Bae

submission deadline 15 Jan 2027 | Viewed by 205 | Submission Open

Keywords: precision veterinary surgery; companion animal surgery; orthopedic surgery; surgical oncology; perioperative management; multimodal analgesia; veterinary anesthesia

(This special issue belongs to the Section Companion Animals)

New Approaches in Veterinary Anesthesia and Pain Management

edited by

Claudia Dina Interlandi

submission deadline 15 Jan 2027 | Viewed by 136 | Submission Open

Keywords: multimodal analgesia; anesthesia; pain management; pets; post-operative recovery; innovative sedation protocols

(This special issue belongs to the Section Veterinary Clinical Studies)

Measuring the Effects of Animal–Visitor Interactions on Animal Welfare in Zoos

edited by