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Topic:Treatment

Treatments for horses encompasses a range of medical and therapeutic interventions aimed at maintaining or restoring equine health. This field involves the use of pharmaceuticals, surgical procedures, and alternative therapies to address various conditions affecting horses. Common treatments include the administration of anti-inflammatory drugs, antibiotics, and vaccines, as well as physical therapies and nutritional management. Research in this area focuses on evaluating the efficacy, safety, and outcomes of different treatment modalities. This page collects peer-reviewed research studies and scholarly articles that explore the methods, advancements, and clinical outcomes associated with equine treatment practices.
Pilot Study of an Alpha-2-Macroglobulin-Enriched Plasma-Derived Orthobiologic Preparation in Sport Horses with Chronic Degenerative Joint Disease.
Veterinary sciences    May 29, 2026   Volume 13, Issue 6 536 doi: 10.3390/vetsci13060536
Gugliandolo E, Biondi V, De Luca M, Nangano E, Strozzi G, Tosto F, Franco GA, Van Reusel Y, Catone G, Spaas JH.Chronic joint disease is a major cause of lameness and reduced performance in sport horses and is characterized by persistent synovial inflammation and protease-mediated matrix degradation. This exploratory prospective pilot study investigated clinical outcomes and synovial biomarker changes following intra-articular administration of an α-2-macroglobulin plasma-derived preparation. Twenty client-owned sport horses were observed in the treatment group (n = 10) or a comparison group (n = 10) and monitored for up to 180 days under field conditions. Clinical outcomes were assessed longitudinally...
Efficacy of 0.5% Tretinoin in the Treatment of Equine Aural Plaques.
Veterinary dermatology    May 29, 2026   doi: 10.1111/vde.70090
de Mattos FS, Conceição LG, Schuartz YGH, Silva VRM, Fidélis CF, Mansur FC, Teixeira CS, Sancler-Silva YFR, Oliveira-Filho JP, Borges AS....Equine aural plaques are a benign form of auricular papillomatosis caused by equine papillomavirus. Despite the efficacy of 5% imiquimod cream, a marked local reaction is frequently observed during therapy, often requiring sedation before application. Objective: The aim of this study was to evaluate the efficacy and potential adverse effects of 0.5% topical tretinoin in the treatment of equine aural plaques. We hypothesised that tretinoin would be effective, with fewer adverse effects compared to imiquimod. Methods: The study included 10 horses of both sexes, aged between 7 months and 15 y...
A Revised View on Equine Hypertriglyceridemia, Hyperlipidemia, and Hyperlipemia.
The Veterinary clinics of North America. Equine practice    May 28, 2026   S0749-0739(26)00022-2 doi: 10.1016/j.cveq.2026.04.007
Dunkel B.Hypertriglyceridemia, also known as hyperlipidemia or hyperlipemia, affects equids of all breeds and ages, mostly secondary to a negative energy balance triggered by a disease process. Increased triglyceride concentrations (TG) have been described in well-eating equids with endocrinopathies, atypical myopathy, severe liver disease, and after treatment with sodium-glucose transporter 2 inhibitors. The fact that equids can have substantially increased TG without showing clinical signs prompted reevaluation of the clinical effects of hypertriglyceridemia. As long as the consequences of high TG ar...
Biliary Disorders in Horses.
The Veterinary clinics of North America. Equine practice    May 28, 2026   S0749-0739(26)00020-9 doi: 10.1016/j.cveq.2026.04.005
Peek SF, Sebastian K.This review will mainly focus on the presentation, diagnosis, and treatment of cholangiohepatitis in adult horses. The condition is often accompanied by some degree of intrahepatic and/or extrahepatic biliary obstruction with "sludgy" bile or actual choleliths. In horses, these calculi are typically composed of calcium bilirubinate, rather than cholesterol. There is a propensity for cholangiohepatitis to become a recurrent, chronic condition and patient management should reflect this. Although much rarer, foreign body obstruction, neoplasia and, in some parts of the world, liver flukes can als...
Effect of N-acetyl cysteine treatment on uterine cytokine and chemokine profiles in mares with persistent breeding-induced endometritis.
Journal of equine veterinary science    May 27, 2026   Volume 165 106033 doi: 10.1016/j.jevs.2026.106033
Khan FA, Caissie MD, Wagner B, Scholtz EL, Chenier TS.Persistent breeding-induced endometritis (PBIE) is a major cause of infertility in mares. Recent research has shown that PBIE-affected mares treated with intrauterine N-acetyl cysteine (NAC) 12 hours before breeding showed no improvement in clinical signs at 12- and 60-hours post-breeding. Objective: The present study was designed to examine the effects of NAC treatment on the uterine inflammatory cytokine and chemokine profiles in PBIE-affected mares. Methods: Using a randomized, blinded, cross-over design, mares susceptible to PBIE (n=9) were allocated to Control and Treatment cycles with at...
Retained fetal membranes in light breed mares hospitalized for attended parturition.
Journal of equine veterinary science    May 27, 2026   Volume 165 105946 doi: 10.1016/j.jevs.2026.105946
Fischetti L, Perina F, Mariella J, Castagnetti C, Lanci A.Retention of fetal membranes (RFM) is well described in draft breeds, whereas data on light breed mares remains limited and inconsistent. Objective: This retrospective study aimed to describe the frequency, associated factors, treatments, and consequences of RFM in light breed mares hospitalized for attended parturition. Methods: Medical records of 321 light breed mares hospitalized for attended parturition at the Veterinary Teaching Hospital, University of Bologna, were retrospectively reviewed. Data collected included: breed, previous history of RFM, age, parity, assisted reproductive techni...
A Surgical Technique for Removal of Setaria digitata From the Anterior Chamber Under Standing Sedation: Outcomes in 12 Horses.
Veterinary ophthalmology    May 23, 2026   Volume 29, Issue 4 e70197 doi: 10.1111/vop.70197
Bhadsavle KC, Jiddimani K.To describe a rapid surgical technique for removal of the intraocular nematode Setaria digitata from the anterior chamber of horses under standing sedation and to report clinical outcomes. Methods: Twelve client-owned horses (2021-2026) presented with a motile intracameral worm. Methods: All surgeries were performed under field conditions using standing sedation (xylazine 1.1 mg kg and butorphanol 0.1 mg kg IV), regional nerve blocks (lidocaine 2%), and topical anesthesia (proparacaine). A 2.8 mm uniplanar oblique (~45°) corneal incision was created ventrolaterally approximately 2...
Combined PRP and CCP Therapy Suppresses Inflammation and Protects Cartilage in Post-Traumatic Osteoarthritis.
Veterinary sciences    May 22, 2026   Volume 13, Issue 6 506 doi: 10.3390/vetsci13060506
Ma T, Liu Y, Li Y, Bai H, Liu X, Qiu Z, Ma Y, Li H, Shi B.This study aimed to evaluate the therapeutic effects of platelet-rich plasma (PRP) and Cervus and Cucumis polypeptide (CCP) injections in rats with post-traumatic osteoarthritis (OA). The model was established by transection of the anterior cruciate ligament, and the animals were subsequently treated with PRP and CCP. Articular cartilage degeneration was assessed through gross morphological observation, histopathological staining, and a standardized scoring system. Concurrently, pain-related behaviors, joint swelling, levels of inflammatory cytokines, and markers associated with extracellular ...
Myofascial trigger points as a primary cause of equine lameness: a biomechanical, neurophysiological, and fascial review.
Frontiers in veterinary science    May 20, 2026   Volume 13 1852775 doi: 10.3389/fvets.2026.1852775
Scheibenpflug M, Haussler KK.Equine lameness diagnosis is dominated by a joint- and tendon-centric paradigm. The standard diagnostic algorithm relies on gait observation, perineural and intrasynovial anesthesia, and cross-sectional imaging. It is directed almost exclusively at skeletal and articular structures. Myofascial trigger points (MTrPs) are hypersensitive, hyperirritable loci within taut bands of skeletal muscle. They produce local and referred pain on compression or contraction. In horses, MTrPs are a clinically relevant but systematically overlooked source of primary lameness. This review synthesises evidence fr...
A 12-year review of equestrian related injuries at a major trauma centre in South Africa.
South African journal of surgery. Suid-Afrikaanse tydskrif vir chirurgie    May 20, 2026   Volume 64, Issue 1 58-61 doi: 10.36303/SAJS.03390
Wilkinson-Smith T, Kong VY, Lee D, Ahn J, Boppana A, Babu N, Wain H, Laing GL, Clarke DL.Few studies on equestrian-related injuries have specifically focused on patients in South Africa. The aim of this study was to review the spectrum of injuries and of patients treated at state-funded trauma centres in South Africa. Methods: A retrospective study was conducted over a 12-year period from July 2012 to February 2025 on all patients treated for equestrian-related injuries. Results: A total of 82 patients were included (83% male, median age: 17 years, median injury severity score (ISS): 9). The most common mechanism of injury was a fall ( = 41), followed by a kick ( = 38). Two were t...
Effects of acupuncture on stride, speed, and heart rate variability in Thoroughbred racehorses.
Journal of the South African Veterinary Association    May 19, 2026   Volume 97, Issue 1 36-44 doi: 10.36303/JSAVA.724
Hartwigsen R, Grant CC, Botha T, van Vollenhoven E.Thoroughbred racehorses are at increased risk of injury during race preparations and trials, primarily due to intensive workloads that predispose them to musculoskeletal injuries. Evaluating clinical interventions to improve health and prevent injury is essential for addressing animal welfare concerns. This study investigated the medium-term effects of acupuncture on stride, speed and cardiac autonomic regulation (assessed via heart rate variability [HRV]), in Thoroughbred flat racehorses. This prospective, randomised, parallel-group study included an intervention and a control group. Thirty T...
Verminous mastitis caused by Cephalobus cubaensis infection in a mare. Barrantes Murillo DF, Smith RC, Wahl E, Gagliardi R, Croce A, Peregrine AS, Moorhead AR, Duncan KT.A 7-y-old American Quarter Horse mare was presented to a veterinary hospital for ongoing reproductive monitoring and management of endometritis. During physical evaluation, several nodular lesions of unknown origin and duration were discovered in the mammae. Histologically, biopsies from the lesions were confirmed as severe granulomatous mastitis with intralesional rhabditid nematodes. A putative diagnosis of or infection was assigned, and ivermectin (1.2 mg/kg PO) treatment was given every 2 wk. When lesions persisted after the initial dose of ivermectin, PCR testing of and gene targe...
Functional and feasibility aspects of orthopedic exoprostheses in quadruped domestic animals: a systematic review.
Research in veterinary science    May 18, 2026   Volume 209 106267 doi: 10.1016/j.rvsc.2026.106267
Paz JHN, de Souza MMN, Limeira CH, da Silva MDCS, Maciel TA, de Miranda Neto EG, Carvalho LRRA.The use of prostheses in animals with partial limb amputation has emerged as an alternative to euthanasia, aiming to improve their quality of life. However, the fabrication and adaptation remain challenging in Veterinary Medicine. This study aims to evaluate, through a systematic review, the determinants of viability, outcomes, and limitations of exoprostheses in domestic animals of varying sizes. A literature search was conducted in ScienceDirect, PubMed, Scopus, Web of Science, and Google Scholar using structure search terms related to prosthesis, veterinary, amputation. After screening and ...
Short-Term Daily Oral Administration of Cannabidiol Does Not Impact Rebound Tonometry Intraocular Pressure or Schirmer Tear Test Values in Healthy Adult Horses.
Veterinary ophthalmology    May 16, 2026   Volume 29, Issue 4 e70188 doi: 10.1111/vop.70188
Diehl K, Sheridan C, Reed R.To assess the effect of orally administered cannabidiol (CBD) on TonoVet measured intraocular pressure (IOP) and Schirmer tear test I (STT) in horses. Methods: Horse. Methods: This was a masked, randomized, balanced cross-over study of six healthy adult horses. Horses were randomly assigned and received 3 mg/kg CBD in sesame oil or volume matched placebo by mouth once daily for three days. Baseline and daily 4-, 12-, and 24-h post treatment IOPs were measured in triplicate without sedation or eyelid akinesia. Baseline and 24-h post final (day 3) treatment STTs were measured without sedation ...
Pharmacokinetics of Diclazuril in the Plasma and Cerebrospinal Fluid of Healthy Adult Horses After a Single Oral Dose Administered as a Pelleted Topdressing.
Journal of veterinary pharmacology and therapeutics    May 16, 2026   doi: 10.1111/jvp.70086
Treece EJ, Hepworth-Warren KL, Papich MG, van Harreveld PD, Blikslager AT, Church FE, Harbor KB, Erwin-Craig SJ.Equine protozoal myeloencephalitis can cause acute infections with rapid onset of neurologic signs, necessitating immediate empiric therapy with antiprotozoal medication. The objective of the study was to identify when concentrations of diclazuril reached the MIC of Sarcocystis neurona in CSF (1 ng/mL) of healthy adult horses after a single oral dose. Six healthy adult horses were used. Blood and CSF were collected from indwelling intravenous jugular catheters and intrathecal catheters in the lumbosacral space prior to drug administration and then at 1-, 4-, 8-, 12-, 16-, 24-, 48-, 72-, 96-,...
Clinical Outcomes Following Intra-Articular Administration of Autologous Muscle-Derived Mesenchymal Stem Cells in Horses with Chronic Osteoarthritis: A Prospective Open-Label Study.
Animals : an open access journal from MDPI    May 15, 2026   Volume 16, Issue 10 1523 doi: 10.3390/ani16101523
Serteyn D, Graide H, Ceusters J, Vandersmissen M, Salciccia A, Sandersen C, Lejeune JP.Mesenchymal stromal/stem cells (MSCs) are increasingly investigated as intra-articular therapies for equine osteoarthritis (OA), although most studies have focused on allogeneic or combination-based approaches. Evidence supporting the use of autologous MSCs as a stand-alone treatment remains limited. The present study evaluated the safety and clinical evolution following intra-articular administration of autologous muscle-derived MSCs (mdMSCs) in horses with naturally occurring chronic OA. Thirteen horses with confirmed clinical disease were included. Each affected joint received a single inje...
Metabolic effects and pharmacokinetics of oral cannabidiol (CBD) in Connemara ponies following 21 days of treatment.
Frontiers in veterinary science    May 14, 2026   Volume 13 1813917 doi: 10.3389/fvets.2026.1813917
Wermer K, Berkecz R, Ilisz I, Csupor D, Ágh N, Sztojkov-Ivanov A, Cserhalmi D, Jerzsele Á, Korbacska-Kutasi O.Cannabidiol (CBD) has gained interest in equine medicine due to its potential therapeutic effects. Preclinical studies suggest that CBD may influence metabolic pathways relevant to metabolic syndrome, which present in both human and equine populations. The aim of this study was to evaluate the effects of oral CBD on metabolic parameters in Connemara ponies and to characterize its pharmacokinetics. Unassigned: A total of 13 Connemara ponies [seven with equine metabolic syndrome (EMS)] were stratified by EMS status and age and randomly assigned to a CBD-treated group (2 mg/kg orally, twice dai...
Owner-Reported Cohort Study of Causes, Management and Outcome of Traumatic Wounds in 219 Horses.
Animals : an open access journal from MDPI    May 11, 2026   Volume 16, Issue 10 1474 doi: 10.3390/ani16101474
Birnie R, Hannelly E, Dubuc J, Burrell K, England GCW, Burford JH, Freeman SL.Current evidence on traumatic equine wounds are predominantly from expert opinion reviews or referral hospital studies. This study aimed to describe the owner-reported causes, management and outcome of equine wounds. An owner-reported cohort approach was used. Owners of horses with recent traumatic wounds were recruited through snowball sampling. Data were collected from initial injury to final healing and outcome, including horse demographics, wound cause and location, owner- and veterinary-administered treatment, and outcome. Descriptive statistics included frequency percentages (%, x/y) and...
Short-term clinical responses in horses and ponies treated with canagliflozin: A clinical field study.
Equine veterinary journal    May 10, 2026   doi: 10.1002/evj.70181
Hällbom M, Lindåse ST, Wartel M, Bröjer J.Treatment with the sodium-glucose co-transporter 2 (SGLT2) inhibitor canagliflozin in insulin dysregulated (ID) horses has shown promising results in randomised clinical trials. Larger field studies are needed to further evaluate treatment responses and potential adverse effects under real-world conditions. Objective: To assess the short-term effects of canagliflozin on postprandial glucose and insulin responses in client-owned horses and ponies with ID using a single-sample feed-challenge test (FCT), and to characterise treatment-associated changes in bodyweight, liver enzyme activities, and ...
Dexmedetomidine infusions improve cardiovascular and renal function in anaesthetised, experimentally endotoxaemic horses.
Equine veterinary journal    May 4, 2026   doi: 10.1002/evj.70173
Lee S, Hector RC, Pezzanite L, Gilleland E, Rezende ML.Dexmedetomidine infusions are beneficial in anaesthetised endotoxaemic horses when administered concurrent to endotoxin, but post-conditioning effects are unknown. Objective: To evaluate whether a dexmedetomidine infusion is beneficial in horses administered Escherichia coli O55:B5 lipopolysaccharides (LPS) endotoxin prior to anaesthesia. Methods: Randomised controlled in vivo experiment. Methods: Ten systemically healthy horses were instrumented for acquisition of cardiac index (CI) using thermodilution. Horses received IV LPS (0.1 μg/kg bwt) immediately prior to anesthesia. Horses receive...
Physical Therapy Intervention With Hippotherapy (HPOT) Affects Balance Control in the Elderly: A Randomized Controlled Trial.
Health science reports    May 3, 2026   Volume 9, Issue 5 e72349 doi: 10.1002/hsr2.72349
Gholami BB, Fatahi A, Boroushak N, Molavian R.Aging is characterized by a decline in functional abilities, strength, balance, flexibility, agility, and coordination due to neurological and muscular changes. Hippotherapy (HPOT) has been recognized for its physical and psychological benefits for older adults. Hence, this study aimed to investigate the effects of hippotherapy on balance in elderly individuals. The novelty lies in using the Biodex Balance System SD for dynamic balance assessment in healthy elderly without neurological disorders. Unassigned: We recruited elderly men aged 60 to 70 who had independent mobility and medical cleara...
Severe Macular Commotio Retinae Following a Fall from a Horse in a Pediatric Patient.
Pediatric reports    May 2, 2026   Volume 18, Issue 3 65 doi: 10.3390/pediatric18030065
Wójcik-Niklewska B, Oliwa Z, Dzięcioł K, Smędowski A.Background and Clinical Significance: Blunt ocular trauma is a significant but often underestimated cause of visual impairment, particularly among adolescents involved in high-risk activities such as horseback riding. While most equestrian injuries affect the head and extremities, ocular trauma, especially commotio retinae, can result in severe visual complications. Case Presentation: We report the case of a 15-year-old girl who sustained blunt ocular trauma to the left eye following a fall from a horse and presented with decreased visual acuity. Multimodal imaging revealed outer retinal abnor...
Pharmacokinetics of Ertugliflozin, a Sodium-Glucose Co-Transporter-2 Inhibitor (SGLT2i) in Horses After Enteral Administration.
Veterinary sciences    May 1, 2026   Volume 13, Issue 5 445 doi: 10.3390/vetsci13050445
Kirkwood NC, Hughes KJ, Lovett AL, Doran GS, Rendle DI, Edwards SH.Ertugliflozin is a sodium-glucose co-transporter-2 inhibitor that has demonstrated promise as a treatment for hyperinsulinaemia in horses. Despite the frequent use of ertugliflozin in equine clinical practice, the pharmacokinetics of this drug in horses has not been established. The aim of the present study was to determine the pharmacokinetics of one supratherapeutic dose (0.25 mg/kg) of ertugliflozin in eight horses. Horses were defined as being healthy by physical examination, haematological, blood biochemical and oral sugar test (OST) results. Plasma concentrations of ertugliflozin were qu...
Treatment of ventricular arrhythmias with oral sotalol in four horses.
Journal of veterinary internal medicine    April 30, 2026   Volume 40, Issue 2 aalag077 doi: 10.1093/jvimsj/aalag077
Junge HK, Williams Louie EG, Mitchell KJ, Schwarzwald CC.Sustained ventricular arrhythmias (VAs) in horses can require medical intervention. Prompt pharmacological treatment is indicated when the arrhythmia leads to hemodynamic or electrical instability. Established antiarrhythmic treatment of VA in horses includes lidocaine and magnesium, administered parenterally. Other antiarrhythmic agents are used; however, concerns regarding adverse effects, financial restrictions, logistics of administration, and lack of access often limit their use. While anecdotal reports of oral administration of sotalol for treatment of VA in horses exist, sotalol has pri...
The immediate effect of whole-body vibration therapy on mechanical nociceptive thresholds in horses with thoracolumbar pain.
Journal of equine veterinary science    April 30, 2026   105919 doi: 10.1016/j.jevs.2026.105919
Giancola SC, Ellis KL.Treating primary back pain in horses can be challenging and often necessitates a multimodal approach. Whole-body vibration therapy (WBV) has been used in both horses and humans to alleviate pain and strengthen muscles. A recent study showed worsening back pain following a 30-minute session of WBV; however, the immediate effects of WBV were not evaluated. The purpose of this study was to assess the immediate effects of whole-body vibration therapy on horses with back pain after a single session of WBV. Objective: The objective of the current study was to determine the immediate effects on mecha...
Heart rate variability in horses with naturally occurring gastric ulcers: Response to omeprazole and sucralfate treatment.
Open veterinary journal    April 30, 2026   Volume 16, Issue 4 2193-2202 doi: 10.5455/OVJ.2026.v16.i4.21
Cingottini D, Bindi F, Sala G, Sorvillo B, Galiano A, Bonelli F, Sgorbini M.Equine gastric ulcer syndrome (EGUS) is the most common disease affecting the equine stomach. Heart rate variability (HRV) describes and quantifies the variability between consecutive heartbeats due to the neurohormonal regulation of the heart. It has been considered a non-invasive method to detect autonomic tone changes that can be influenced by pain and disease. Unassigned: This study aimed to assess the HRV indices in horses affected by EGUS submitted or not to treatment. Unassigned: A cohort of 45 mares underwent baseline gastroscopy (T0); 24/45 mares diagnosed with Equine Squamous Gastric...
Clodronate disodium reduced TRAP5b independent of affecting other systemic biomarkers of bone resorption or formation in yearling, exercising Quarter Horses.
Journal of animal science    April 29, 2026   skag135 doi: 10.1093/jas/skag135
Paris BL, Leatherwood JL, Arnold CE, Glass KG, Conrad MB, George JM, Martinez RE, Colbath AC, Nielsen BD, Welsh TH, Bradbery AN.Clodronate disodium (CD), a bisphosphonate, modulates bone metabolism. Though extra-label use in juvenile horses is anecdotally reported, impacts on skeletal development are unknown. The objective was to determine the effects of CD on systemic markers of bone turnover in yearling horses undergoing exercise, hypothesizing that biomarkers of bone resorption would decrease while biomarkers of bone formation would not change, and that repeat CD treatments would have greater effect. To test this, 32 yearling Quarter Horses were used in a 168-d trial. Horses were stratified by age (500 ± 13 d),...
Clinical and Biochemical Effects of Intra-Articular Autologous Conditioned Serum and Triamcinolone in an Equine Model of Synovitis.
Animals : an open access journal from MDPI    April 29, 2026   Volume 16, Issue 9 1371 doi: 10.3390/ani16091371
Alvarez AV, Wooldridge A, Caldwell F, Zetterström S, Menarim BC, Towns TJ, Graff EC, Boone L.Synovitis is a key contributor to the development of OA, and early modulation of the synovial environment may help limit downstream cartilage damage. This study compared the clinical and biochemical effects of intra-articular triamcinolone acetonide (TA) and autologous conditioned serum (ACS) in an equine model of IL-1β-induced synovitis. Six healthy adult horses were used in a crossover design involving five groups: PBS (negative control), IL-1β (positive control), IL-1β + ACS, IL-1β + TA, and an exploratory ACS-alone group administered post hoc to isolate its effects without IL-1β inter...
Ertugliflozin decreases the insulin spike in non-insulin dysregulated standardbred horses following intra-articular triamcinolone administration.
Domestic animal endocrinology    April 26, 2026   Volume 96 107016 doi: 10.1016/j.domaniend.2026.107016
Darch C, Hyndman TH, Byrne D, Rendle DI, Fraser B.Horses with equine metabolic syndrome (EMS) are at an increased risk of laminitis following corticosteroid use. Ertugliflozin reduces hyperinsulinemia in horses with EMS, and therefore may be a management option to reduce the insulin spike seen post corticosteroid use. It was hypothesised that oral ertugliflozin, administered before and after intra-articular (IA) triamcinolone acetonide (TA), will significantly lower the insulin response in comparison to placebo. A randomised, blinded, placebo-controlled, crossover design was performed on eight adult standardbred geldings with no history of la...
Age, embryo donor status, and insemination with chilled semen all predispose to persistent breeding-induced endometritis in warmblood mares.
Equine veterinary journal    April 24, 2026   doi: 10.1002/evj.70175
Stout T, Serrarens R, Leemans B, Claes A.Persistent breeding-induced endometritis (PBIE) is a common reason for mares failing to establish pregnancy. Objective: To examine the hypothesis that advancing mare age and embryo donor status predispose to PBIE and compromise fertility. Methods: Retrospective analysis of the impact of mare age, breeding system (embryo donor versus broodmare), and semen type (chilled versus frozen-thawed) on the likelihood of PBIE and subsequent pregnancy/embryo recovery. Methods: Warmblood mares (n = 769) inseminated during 1745 oestrous cycles were divided into three age categories (≤6, 7-13 and ≥14...