Journal of Equine Veterinary Science最新文献

{"title":"Morphometric characteristics of quarter horses in barrel racing events: impacts on performance and competitive success","authors":"Giovanna Polo Freitag ,&nbsp;Luis Gustavo Freitag de Lima ,&nbsp;Luiz Ernandes Kozicki ,&nbsp;Fernando Andrade Souza ,&nbsp;Eriklis Nogueira ,&nbsp;Leonir Bueno Ribeiro","doi":"10.1016/j.jevs.2025.105676","DOIUrl":"10.1016/j.jevs.2025.105676","url":null,"abstract":"<div><h3>Aims</h3><div>This study investigated the influence of morphometric characteristics on performance in Quarter Horses competing in barrel racing.</div></div><div><h3>Methods</h3><div>A total of 125 horses were assessed using 28 linear and angular body measurements derived from standardized left-side photographs captured via smartphone and analyzed with open-source software.</div></div><div><h3>Results</h3><div>Measurements were subjected to exploratory factor analysis, extracting six principal components (forequarters, hindquarters, midsection, posterior angles, scapular traits, age and weight), which together explained 83.0 % of the morphological variance. Forequarter morphology, including withers height and limb lengths, accounted for 37.4 % of the variation in race performance. Hierarchical cluster analysis grouped horses by trial times, revealing that animals with faster times exhibited significantly larger ribcage dimensions, longer scapulae, and greater coxofemoral angles. A multivariate regression model incorporating the principal components predicted individual potential trial times with high accuracy (R² = 0.6848; <em>P</em> = 0.0388), and comparisons with actual times confirmed the model’s validity. Age and body weight were also relevant, with younger, well-muscled horses demonstrating superior performance.</div></div><div><h3>Conclusion</h3><div>Forequarter conformation, scapular inclination, and indicators of respiratory and muscular capacity were strong predictors of barrel racing success in Quarter Horses, and image-based morphometric analysis was a valuable tool for performance prediction and selection in this study.</div></div>","PeriodicalId":15798,"journal":{"name":"Journal of Equine Veterinary Science","volume":"153 ","pages":"Article 105676"},"PeriodicalIF":1.6,"publicationDate":"2025-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144873419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Readers Information","authors":"","doi":"10.1016/S0737-0806(25)00325-9","DOIUrl":"10.1016/S0737-0806(25)00325-9","url":null,"abstract":"","PeriodicalId":15798,"journal":{"name":"Journal of Equine Veterinary Science","volume":"152 ","pages":"Article 105667"},"PeriodicalIF":1.6,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144842600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Butylated hydroxytoluene (BHT) improved semen quality and sperm DNA of frozen-thawed Arabian stallions preserved in modified INRA-82 extender","authors":"Amal M. Aboelmaaty ,&nbsp;Islam El-Sayed El-Seadawy ,&nbsp;Mohamed Saeed Kotp ,&nbsp;Alaa A. Mohamed ,&nbsp;Hazem Ahmed El-Debaky ,&nbsp;Diya A. El-Badry ,&nbsp;Abeer M. Anwer ,&nbsp;Tsvetan Tsvetkov ,&nbsp;Teodora Daneva ,&nbsp;Mahmoud A. Elgabry","doi":"10.1016/j.jevs.2025.105675","DOIUrl":"10.1016/j.jevs.2025.105675","url":null,"abstract":"<div><h3>Background</h3><div>Alpha-tocopherol is one of the non-enzymatic lipophilic antioxidants. Butylated hydroxytoluene (BHT) is a synthetic analog with similar modes of action in protecting the cryopreserved sperms.</div></div><div><h3>Aims/objectives</h3><div>This study hypothesized that a certain concentration of any antioxidant is suitable for improving the post-thaw semen quality of stallions.</div></div><div><h3>Methods</h3><div>To determine the optimum BHT concentration, a synthetic antioxidant similar to vitamin E in potency and scavenging oxidative stress power in concentrations of 0.0, 0.25, 0.50, 1.0, 2.0, and 4.0 mM/ml were added to semen extender. The post-thaw sperm progressive motility at 0, 1 h, 2 h, and 3 h, the sperm viability index, the plasma membrane integrity tested by the hypo-osmotic swelling test (HOST), the acrosome integrity, non-fragmented DNA, % of DNA in the comet head, % of DNA in the comet tail, comet tail length, and comet tail moment were compared.</div></div><div><h3>Results</h3><div>According to our hypothesis, 1.0 mM BHT was the most suitable concentration that preserved the highest (<em>P</em> &lt; 0.0001) post-thaw sperm progressive motility at 0.0, 1 h, 2 h, 3 h., the highest viability index (<em>P</em> &lt; 0.0001), plasma membrane and acrosome integrities (<em>P</em> &lt; 0.0001),non-fragmented DNA (<em>P</em> &lt; 0.001), and % of DNA in the comet head (<em>P</em> &lt; 0.001), the lowest DNA % in the comet tail (<em>P</em> &lt; 0.001) and comet tail moment (<em>P</em> &lt; 0.0001), and the shortest (<em>P</em> &lt; 0.0001) comet tail length.</div></div><div><h3>Conclusions</h3><div>The concentrations of BHT around 1.0 mM/ml (0.5, 2.0mM/ml) proved better post-thaw semen characteristics, but increasing BHT concentrations from &gt;2.0mM/ml to 4.0 mM/ml started to deteriorate semen quality than non-supplemented control. The optimum BHT concentration for modified INRA-82 is 1.0 mM/ml.</div></div>","PeriodicalId":15798,"journal":{"name":"Journal of Equine Veterinary Science","volume":"153 ","pages":"Article 105675"},"PeriodicalIF":1.6,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144862249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photodynamic therapy in the treatment of cutaneous habronemosis in a horse: Case report","authors":"I. Ferreira ,&nbsp;J.G. Pinto ,&nbsp;E.G.L. Oliveira ,&nbsp;M.C.B.S. de Azevedo ,&nbsp;L.M.C. Marcolino ,&nbsp;J. Ferreira-Strixino","doi":"10.1016/j.jevs.2025.105674","DOIUrl":"10.1016/j.jevs.2025.105674","url":null,"abstract":"<div><div><em>Habronema muscae</em> is a parasitic nematode that causes habronemiasis in horses, leading to chronic skin lesions. The parasite is transmitted via flies, and larvae deposited in wounds result in difficult-to-heal “summer sores”. This case study involved treating a 9-year-old gelding male horse with recurrent habronemiasis using photodynamic therapy (PDT) concurrent with conventional treatments. The horse presented with ulcerated, exudative wounds on its limbs and face, unresponsive to traditional treatments. PDT was applied over six months, using methylene blue (MB) as a photosensitizer, combined with LED irradiation. Additionally, an ivermectin-based ointment and other healing agents were used. The results showed a reduction in lesion size after two months, complete healing of the thoracic wounds by month four, and facial wound healing after six months. In this case, PDT was an effective adjunct treatment for managing habronemiasis.</div></div>","PeriodicalId":15798,"journal":{"name":"Journal of Equine Veterinary Science","volume":"153 ","pages":"Article 105674"},"PeriodicalIF":1.6,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144859255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Emergence of a new alveolar dental element after extraction of a molar tooth in a horse","authors":"L.L.V. Oliveira ,&nbsp;M.C.A.R. Caldas ,&nbsp;L.M.E. Marval ,&nbsp;C.A. Marval ,&nbsp;J.G.S. Carvalho ,&nbsp;J.J.R.T. Matos ,&nbsp;B.D. Malacarne ,&nbsp;C.F.R. Paz","doi":"10.1016/j.jevs.2025.105673","DOIUrl":"10.1016/j.jevs.2025.105673","url":null,"abstract":"<div><div>A 2-year-old mixed-breed mare was examined at the property due to swelling and fistula on the right mandible. Oral examination and radiographs revealed the presence of an apical abscess involving the 410 tooth. The tooth was extracted entirely and confirmed radiographically. One year later, the owner reported a reoccurrence of clinical signs. A new radiographic evaluation revealed a radiopaque area in the alveolar socket of the 410 tooth filled with spongy-looking bone. An extraoral approach to the alveolar socket was performed, and the content removed had the appearance of a dental element.</div></div>","PeriodicalId":15798,"journal":{"name":"Journal of Equine Veterinary Science","volume":"153 ","pages":"Article 105673"},"PeriodicalIF":1.6,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144847072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Management of retained fetal membranes by umbilical vessel infusion in mares submitted to elective C-section","authors":"Marcos Eduardo Neto ,&nbsp;Bruna R. Curcio ,&nbsp;Leandro A. Rafael ,&nbsp;Giovana M. Pivato ,&nbsp;Gabriela C. Silva ,&nbsp;Rafaela P. Souza ,&nbsp;Mariana A. Mousquer ,&nbsp;Carlos E.W. Nogueira","doi":"10.1016/j.jevs.2025.105662","DOIUrl":"10.1016/j.jevs.2025.105662","url":null,"abstract":"<div><div>The cesarian section (C-section) is a potential risk factor for retained fetal membranes (RFM) in mares, requiring prompt diagnosis and treatment to enhance outcomes. This study aimed to evaluate the use of umbilical vessel infusion for the treatment of RFM after elective C-section in mares. Ten pregnant criollo type-mares at 315 days of gestation were monitored daily and underwent elective C-section upon readiness for birth. All mares exhibited RFM, with placentas retained beyond three hours careful extraction of the foal by C-section. Those were randomly assigned into two groups: Umbilical vessel infusion (<em>n</em> = 5): using of low-pressure 0.9 % saline solution infusion into the umbilical vessel; or Counterweight (<em>n</em> = 5): involving a light counterweight (1 kg) attached to the exposed fetal membrane. Mares that presented time from onset treatment to full separation and expulsion of the fetal membrane by 40 min were classified as responsive to treatment. There were no differences in mares’ age (8 ± 2, 3-20 years), gestational length (333 ± 3, 328-360 d), foal weight (38 ± 2, 30-50 Kg), the surgical time to C-section (124 ± 5, 90-150 min), and time of uterine manipulation during C-section (57 ± 3, 45-70 min) between groups. Results showed that 80 % (<em>n</em> = 4/5) of mares in the Umbilical Vessel Infusion group achieved membrane expulsion within 40 minutes, while none (0 %, <em>n</em> = 0/5) in the Counterweight group responded within this timeframe (<em>P</em> &lt; 0.05). Mares receiving the umbilical vessel infusion method have not experienced severe signs of discomfort, pain, or additional secondary side effects after the procedure. In conclusion, umbilical vessel infusion is an effective, safe, and practical method for the treatment of retained fetal membranes after C-section in mares.</div></div>","PeriodicalId":15798,"journal":{"name":"Journal of Equine Veterinary Science","volume":"153 ","pages":"Article 105662"},"PeriodicalIF":1.6,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144804220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advanced equine duodenoscopy technique","authors":"R. Agrícola ,&nbsp;G. Ribeiro ,&nbsp;J. Borges ,&nbsp;L. Carvalho ,&nbsp;I. Roquet ,&nbsp;L.M. Carvalho ,&nbsp;J. Prazeres","doi":"10.1016/j.jevs.2025.105659","DOIUrl":"10.1016/j.jevs.2025.105659","url":null,"abstract":"<div><div>Duodenal pathologies are underreported in equine medicine, probably not due to little occurrence, but due to the limitations of current diagnostic techniques. The aim of this report is to describe a novel duodenoscopic approach, that allows a complete visualization of a region inaccessible via standard techniques. Gastroduodenoscopy was performed in a clinical setting in 60 adult horses referred to us due to complaints suspected to be related to gastroduodenal diseases. The initial steps of the procedure were performed using previously published techniques. Once the video-endoscope reached the cranial duodenum and before direct visualization of the major duodenal papilla, a slow and controlled retroflexion maneuver was performed, allowing a complete examination of the duodenal face of the pyloric sphincter and the whole cranial aspect of the duodenum. The technique described allowed better duodenoscopy examination, without risking lesions of the adjacent mucosa and allowed a wide field of view avoiding blind spots.</div></div>","PeriodicalId":15798,"journal":{"name":"Journal of Equine Veterinary Science","volume":"152 ","pages":"Article 105659"},"PeriodicalIF":1.6,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144756777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Plasma Activin A concentrations are not a useful biomarker for detecting insulin dysregulation and predicting laminitis risk in ponies","authors":"C.J. McGuire ,&nbsp;E.J. Knowles ,&nbsp;P.A. Harris ,&nbsp;N.J. Menzies-Gow","doi":"10.1016/j.jevs.2025.105660","DOIUrl":"10.1016/j.jevs.2025.105660","url":null,"abstract":"<div><h3>Background</h3><div>Circulating insulin concentrations are used to quantify risk of laminitis in currently non-laminitic ponies. Basal serum activin A (AA) concentration has previously been positively correlated with serum insulin concentrations 60 minutes (T60) following an oral sugar test (OST) in ponies with equine metabolic syndrome. Therefore, circulating AA might be a useful marker for insulin dysregulation (ID) and laminitis risk.</div></div><div><h3>Objectives</h3><div>To explore the relationship between circulating AA concentrations at baseline (T0) and T60 in ponies that developed laminitis within six months and non-laminitic ponies.</div></div><div><h3>Methods</h3><div>Case-control study. Forty-three ponies that developed laminitis (PLP) during a four-year surveillance period were selected from a larger cohort; 43 ponies from the same cohort that remained non-laminitic (NLP) were selected as controls. Plasma AA concentrations were measured using a validated ELISA at T0 and T60 and compared between groups at both time points using a Wilcoxon signed ranks test. Correlations with other previously measured metabolic markers were investigated using Spearman‘s rank correlation coefficients.</div></div><div><h3>Results</h3><div>There was a significant difference between T0 plasma AA (median 8.8; interquartile range [6.2, 13.1]ng/mL) and T60 (13.1; [8.8, 20.1]ng/mL) within the NLP group (P= &lt;0.001) and between plasma AA at T0 (7.4 [5.5, 12.4]ng/mL) and T60 (12.3 [6.9, 16.6]ng/ml) in the PLP group (P= &lt;0.001). There were no significant correlations between plasma AA (T0 or T60) and any other measured metabolic marker. Single timepoints and retrospective analysis were the main limitations.</div></div><div><h3>Conclusion</h3><div>Plasma AA concentration is not a useful marker for ID or predicting laminitis development in ponies.</div></div>","PeriodicalId":15798,"journal":{"name":"Journal of Equine Veterinary Science","volume":"153 ","pages":"Article 105660"},"PeriodicalIF":1.6,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144760284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Population structure and signature of selection for body size in some Iranian and exotic horse breeds","authors":"Banafsheh Bazvand ,&nbsp;Amir Rashidi ,&nbsp;Mohammad Bagher Zandi ,&nbsp;Mohammad Hossein Moradi ,&nbsp;Jalal Rostamzadeh ,&nbsp;Peyman Mahmoudi","doi":"10.1016/j.jevs.2025.105658","DOIUrl":"10.1016/j.jevs.2025.105658","url":null,"abstract":"<div><h3>Background</h3><div>Iran is home to genetically distinct horse breeds shaped by geography and history. Breeds like the Kurdish, Caspian pony, and Turkmen reflect deep-rooted diversity and unique adaptive traits.</div></div><div><h3>Aims/Objectives</h3><div>This study aimed to identify genomic regions exhibiting signatures of selection and to detect candidate genes and biological pathways related to body size that may influence performance in various Iranian and exotic horse breeds.</div></div><div><h3>Methods</h3><div>Samples were collected from three Iranian native breeds (Caspian pony, Turkmen, and Kurdish) and three exotic breeds (Fell pony, Arabian, and Akhal-Teke) originating from England, the Middle East, and Turkmenistan, respectively. Genotyping data included 50 K SNPs for the exotic breeds and 70 K SNPs for the Iranian breeds. To explore population structure and genetic differentiation, Discriminant Analysis of Principal Components (DAPC) was conducted.</div></div><div><h3>Results</h3><div>Population structure analysis showed clear separation between pony and light horse breeds, with Akhal-Teke and Turkmen clustering together and Fell ponies forming a distinct group. Using FLK and hapFLK tests, we identified 124 and 127 candidate genes under selection, respectively. Several genes were linked to body size traits, including those involved in bone mineralization, osteoblast differentiation, growth factor signaling, and tissue development. Notably, we identified novel genes including <em>SAMD7, SPARC1, IBSP, MEPE, DEUP12, PLAAT1</em>, and <em>SPP1</em> that not previously reported in horse studies, offering new insights into equine morphology.</div></div><div><h3>Conclusion</h3><div>Results revealed selection signatures linked to genes influencing body size and development, including several novel candidates. These findings deepen our understanding of equine morphology and warrant further investigation using larger sample sizes.</div></div>","PeriodicalId":15798,"journal":{"name":"Journal of Equine Veterinary Science","volume":"152 ","pages":"Article 105658"},"PeriodicalIF":1.6,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144760285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical safety of intrauterine infusion of a uterine sanitizer in mares","authors":"Lorenzo Segabinazzi ,&nbsp;Fernando P. Lisboa ,&nbsp;Bruna Zutter","doi":"10.1016/j.jevs.2025.105657","DOIUrl":"10.1016/j.jevs.2025.105657","url":null,"abstract":"<div><h3>Background</h3><div>Limited response to conventional therapies and rising antibiotic resistance emphasize the need for alternative treatments for infectious endometritis. A recent <em>in vitro</em> study showed promising antimicrobial activity of a commercial uterine cleaning sanitizer (UCS) against endometritis pathogens. However, its safety and efficacy in mares remain untested.</div></div><div><h3>Aims/objectives</h3><div>This study aimed to assess the clinical safety of intrauterine infusion of UCS in reproductively sound mares.</div></div><div><h3>Methods</h3><div>Exp. 1. Six healthy mares with endometrial biopsies classified as I or IIA had two intrauterine infusions of UCS performed during estrus. Biopsies were taken 3 days post-treatment and 8- and 21-days post-ovulation. Exp. 2. Eleven reproductive sound mares had two estrous cycles randomly assigned to receive two intrauterine infusions of UCS or placebo (lactate ringer) at the beginning of estrus. Mares were inseminated 24 h after the last treatment. Embryo flushing was performed 8 days post-ovulation.</div></div><div><h3>Results</h3><div>Exp. 1. There was a slight change in endometrial biopsy scores, primarily due to an increased inflammatory infiltrate in the endometrium, three days post-treatment with complete recovery to baselines at 8- and 21-days post-ovulation. Exp. 2. Embryo recovery rates were similar between UCS (9/11) and placebo (8/11) cycles.</div></div><div><h3>Conclusion</h3><div>In conclusion, intrauterine infusion of UCS appears to be a safe therapy in broodmare practice and may offer a promising adjuvant therapy for endometritis in mares.</div></div>","PeriodicalId":15798,"journal":{"name":"Journal of Equine Veterinary Science","volume":"152 ","pages":"Article 105657"},"PeriodicalIF":1.6,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144760283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}