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Topic:Veterinary Medicine

Veterinary medicine for horses encompasses the study and application of medical practices to diagnose, treat, and prevent diseases in equine species. This field involves a comprehensive understanding of equine anatomy, physiology, pathology, and pharmacology. Veterinary practitioners employ a range of diagnostic tools and therapeutic interventions to address health issues in horses, including lameness, gastrointestinal disorders, respiratory conditions, and infectious diseases. Preventative care, such as vaccination and deworming programs, is also a significant aspect of equine veterinary medicine. This page gathers peer-reviewed research studies and scholarly articles that explore various aspects of veterinary medicine as it pertains to horses, including advancements in diagnostic techniques, treatment protocols, and preventive health strategies.
[Ultrasonography of ovarian pathology in the mare: a review for the practitioner].
Schweizer Archiv fur Tierheilkunde    January 1, 1994   Volume 136, Issue 9 285-291 
Montavon S.The aim of this review is to give the practitioner the ability to be familiar with the echographic exam of ovarian abnormalities. He should be able to recognize different stages of the development of these important structures and to estimate the effect that they can have on the normal cycle of the mare. Various specific criteria and details regarding the equine echography of ovarian abnormalities are reported and illustrated, using the last scientific data published on that particular topic.
Cellular sources of proteolytic enzymes in equine joints.
Equine veterinary journal    January 1, 1994   Volume 26, Issue 1 43-47 doi: 10.1111/j.2042-3306.1994.tb04329.x
Spiers S, May SA, Bennett D, Edwards GB.Isolated equine blood and articular cells were investigated for proteolytic enzyme production by means of gel filtration and analysis on 14C-acetylated collagen and casein substrates. Significant amounts of collagenase and caseinase activity were produced by cultured synoviocytes stimulated with equine interleukin 1, although large amounts of collagenase also originated from neutrophils.
Myelodysplastic syndrome in a quarter horse gelding.
Equine veterinary journal    January 1, 1994   Volume 26, Issue 1 83-85 doi: 10.1111/j.2042-3306.1994.tb04339.x
Durando MM, Alleman AR, Harvey JW.No abstract available
The long-term influence of biotin supplementation on hoof horn quality in horses.
Schweizer Archiv fur Tierheilkunde    January 1, 1994   Volume 136, Issue 4 137-149 
Geyer H, Schulze J.The influence of dietary biotin in horses with brittle hoof horn and chipped hooves was investigated in a long-term study, which was performed over a period from one to six years. 97 horses received 5 mg of biotin per 100 to 150 kg of body weight, per os, daily; 11 horses were not supplemented with biotin and served as controls. The hooves of all horses were evaluated macroscopically every three to four months. Hoof horn specimens of the proximal wall were examined histologically and physically in 25 and 15 horses, respectively. The tensile strength of normal coronary horn was 60 N/mm2 or grea...
Is horse riding a dangerous recreation for young girls? A study at emergency departments of Lahti City Hospital and Päijat-Häme Central Hospital, Lahti.
Annales chirurgiae et gynaecologiae    January 1, 1994   Volume 83, Issue 3 225-228 
Niskanen R, Lindahl J, Mokka R, Korkala O.Horse-related injuries form a notable part of sports and leisure time accidents. 54% of the injured were female riders under the age of 20 years. The most serious injuries were upper extremity ones. Over one third of the riders had suffered previously from horse-related injuries.
Ultrasonographic assessment of the proximal digital annular ligament in the equine forelimb.
Equine veterinary journal    January 1, 1994   Volume 26, Issue 1 59-64 doi: 10.1111/j.2042-3306.1994.tb04333.x
Dik KJ, Boroffka S, Stolk P.Ultrasonography was used with 6 normal cadaver forelimbs of Dutch Warmblood horses to delineate the ultrasonographic anatomy of the palmar pastern region, with emphasis on the proximal digital annular ligament. Using a 5.5 MHz sector scanner, the thin proximal digital annular ligament was not visible on offset sonograms. Only if the digital sheath in the normal limb was distended was the distal border of this ligament outlined. In all normal limbs the palmarodistal thickness of the combined skin-proximal digital annular ligament layer in the mid-pastern region was 2 mm. The flexor tendons and ...
Frusemide attenuates the exercise-induced rise in pulmonary capillary blood pressure in horses.
Equine veterinary journal    January 1, 1994   Volume 26, Issue 1 51-54 doi: 10.1111/j.2042-3306.1994.tb04331.x
Manohar M, Hutchens E, Coney E.Catheter mounted micro-tip-manometers (the signals from which were matched with fluid-filled pressure signals from same cardiovascular sites and zeroed at the point of the shoulder), were used to study pulmonary haemodynamics in 8 healthy sound horses at rest and during exercise performed at 8, 10, 12 and 14 m/s on a treadmill. Measurements were made without frusemide (control) and 4 h after iv administration of 250 mg frusemide. Post-frusemide data were also obtained on a separate day, and these observations were not significantly different from those made on the same day as controls. Pre-fru...
Large granular lymphocyte neoplasia in an aged mare. Quist CF, Harmon BG, Mahaffey EA, Collatos C.No abstract available
Inhibitory nerve distribution and mediation of NANC relaxation by nitric oxide in horse airways.
Journal of applied physiology (Bethesda, Md. : 1985)    January 1, 1994   Volume 76, Issue 1 339-344 doi: 10.1152/jappl.1994.76.1.339
Yu M, Wang Z, Robinson NE, Leblanc PH.The distribution of inhibitory nerves and the mediator of the inhibitory nonadrenergic noncholinergic (iN-ANC) nervous system were investigated in smooth muscle preparations from seven regions of equine airways. In tissues incubated with atropine and precontracted with histamine, electrical field stimulation produced frequency-dependent relaxation, and the magnitude of the relaxation decreased from trachea to central bronchi and was absent in peripheral airways. The degree of relaxation in bronchi was not simply a function of bronchial size or generation. Propranolol inhibited part of the rela...
Horse cDNA clones encoding two MHC class I genes.
Immunogenetics    January 1, 1994   Volume 40, Issue 2 163 doi: 10.1007/BF00188182
Barbis DP, Maher JK, Stanek J, Klaunberg BA, Antczak DF.No abstract available
Placental progestagens in the sheep and horse and the changes leading to parturition.
Experimental and clinical endocrinology    January 1, 1994   Volume 102, Issue 3 203-211 doi: 10.1055/s-0029-1211284
Silver M.Placental progestagen production and metabolism during pregnancy, the changes which precede parturition and the extent of fetal involvement in the latter processes are compared in the sheep and the horse. Neither species requires the presence of a corpus luteum for maintenance of the latter part of pregnancy, but the mechanisms involved in placental progesterone/progestagen production are very different in the two species. In sheep the primary product is progesterone (P4), levels of which are high in the maternal but not the fetal circulations. By contrast, in the mare P4 is not detectable in ...
[Possibilities and limits of pulse oximetry for monitoring anesthesia in horses].
Berliner und Munchener tierarztliche Wochenschrift    January 1, 1994   Volume 107, Issue 1 7-11 
Maier FP, Wintzer HJ.In this paper the measurement technique pulse oximetry is examined in 25 halothane-anaesthetized horses. Furthermore measures are presented which lead to a successful sensor placement at the tongue of the horse. The hemoglobin saturation determined by the pulse oximeter (SaO2) correlated very well with the hemoglobin saturation calculated by blood gas analysis (sO2). Nevertheless in the range of low saturation the pulse oximeter increasingly overestimates sO2. Pulse oximetry is an important progress in equine patient monitoring. A decline of oxygen saturation in the blood is detected immediate...
Squamous cell carcinoma of the larynx and pharynx in horses.
The Cornell veterinarian    January 1, 1994   Volume 84, Issue 1 15-24 
Jones DL.Medical records were reviewed for 11 horses with squamous cell carcinoma of the larynx and/or pharynx. The average age at presentation was 15.3 years. No breed or sex predilection was present. At presentation, 6 of 11 horses were dyspneic and 4 horses had inspiratory stridor. Endoscopy was performed in all cases and was more useful in demonstrating a mass in the laryngopharyngeal region than laryngeal or guttural pouch radiography. Surgical excision was attempted in 3 horses and in 1 horse alleviated clinical signs for 4 months. Ten horses were euthanatized and 1 horse died. Results of this st...
Vasomotor effects of histamine on bovine and equine basilar arteries in vitro.
Veterinary research communications    January 1, 1994   Volume 18, Issue 6 447-456 doi: 10.1007/BF01839422
Miyamoto A, Nishio A.The vasomotor effects of histamine on isolated bovine and equine basilar arteries were examined. Histamine induced contractions in both these preparations. The maximal response to and pEC50 value for histamine of the equine artery were larger than those of bovine tissue. Similar results were obtained with endothelium-denuded basilar arteries. Diphenhydramine (H1-receptor antagonist) inhibited histamine-induced contractions of the basilar arteries from both species in a concentration-dependent manner and its pA2 values (with 95% confidence limits) were 7.61 (7.39-7.83) and 8.15 (8.01-8.29) for ...
Preservation of ejaculated and epididymal stallion spermatozoa by cooling and freezing.
Theriogenology    January 1, 1994   Volume 41, Issue 4 809-818 doi: 10.1016/0093-691x(94)90497-7
Braun J, Sakai M, Hochi S, Oguri N.The suitability of ejaculated and epididymal stallion spermatozoa for cooled storage (5 degrees C) and cryopreservation was examined in 5 ejaculates from each of 6 stallions and in spermatozoa recovered from the cauda epididymidis after castration of these stallions. The percentage of progressively motile spermatozoa, examined by subjective estimation (cooled samples) or by computerized analysis (frozen-thawed samples), was used as parameter. In ejaculated semen samples containing 5 and 25% seminal plasma in a skim milk glucose extender, the lower amount of seminal plasma supported spermatozoa...
Pregnancies following transfer of equine embryos cryopreserved by vitrification.
Theriogenology    January 1, 1994   Volume 42, Issue 3 483-488 doi: 10.1016/0093-691x(94)90686-d
Hochi S, Fujimoto T, Braun J, Oguri N.The objective of this study was to investigate the in vitro and in vivo developmental abilities of equine embryos cryopreserved by vitrification. Twenty-eight embryos were recovered from Native pony and Thoroughbred mares at Days 5 to 7 by nonsurgical uterine flushing (detection of ovulation=Day 0). The vitrification solution contained 40% ethylene glycol, 18% Ficoll, and 0.3 M sucrose in PBS. The embryos were placed for 1 to 2 min in vitrification solution (Group 1) or following exposure to 20% ethylene glycol in PBS for 10 to 20 min (Groups 2 and 3). Single embryos were loaded in 0.25-ml str...
Rhodococcus equi vertebral osteomyelitis in foals.
Equine veterinary journal    January 1, 1994   Volume 26, Issue 1 1-2 doi: 10.1111/j.2042-3306.1994.tb04317.x
Prescott JF.No abstract available
Nutritional regulation of uteroplacental prostaglandin production and metabolism in pregnant ewes and mares during late gestation.
Experimental and clinical endocrinology    January 1, 1994   Volume 102, Issue 3 212-221 doi: 10.1055/s-0029-1211285
Fowden AL, Ralph MM, Silver M.Prostaglandins (PGs) are produced by a variety of uteroplacental tissues during pregnancy and are released into the fetal fluid sacs and both the uterine and umbilical circulations. Uterine PG output increases towards term and is enhanced by maternal undernutrition in pregnant ewes and mares. In both species, withdrawal of food but not water for 30-48 h increases uterine venous PG levels and the uterine venous arterial concentration differences in PGE and 13, 14, dihydro-15-keto-prostaglandin F2 alpha (PGFM), the stable metabolite of PGF2 alpha. The increments in uterine V-A concentration diff...
Natural outcome and ultrasonic identification of equine fetal twins.
Theriogenology    January 1, 1994   Volume 41, Issue 5 1193-1199 doi: 10.1016/s0093-691x(05)80041-x
Ginther OJ, Griffin PG.The natural outcome of bilateral twins (one in each uterine horn) that were viable on Day 40 was studied in 15 pony mares. Fetuses were monitored by transrectal ultrasonography until the outcome was determinable. One fetus (2 mares) or both fetuses (8 mares) died (cessation of heartbeats) during Months 2 and 3. Loss of fetuses was externally observed in 4 additional mares during the late fetal stage (Months 8 to 11); 2 mares lost 1 fetus and 2 lost both fetuses. Birth of 2 live foals occurred in only 1 of 15 mares (7%) First day of detected apposition between portions of the 2 allantochorions ...
[Ultrasonography of the formation and development of the corpus luteum in the mare: review for the practitioner].
Schweizer Archiv fur Tierheilkunde    January 1, 1994   Volume 136, Issue 3 91-94 
Montavon S.Because of the anatomical position of the Corpus luteum within the ovary, rectal palpation is of little value for identification and evaluation. The aim of this review is to familiarize the practitioner with the echographic examination of the Cl. He should be able to recognize different stages of this important structure and to correlate ovulation and the existence of the Cl. Various specific criteria and details regarding equine echography are reported and illustrated, using the the most recently published scientific data.
Nucleotide sequence of the equine interferon gamma cDNA.
DNA sequence : the journal of DNA sequencing and mapping    January 1, 1994   Volume 4, Issue 6 405-407 doi: 10.3109/10425179409010190
Curran JA, Argyle DJ, Cox P, Onions DE, Nicolson L.Interferon gamma, a cytokine produced by T-lymphocytes and natural killer cells, plays a central role in the modulation of the immune response, and its antiviral and antitumourigenic properties have made it a potential candidate for use in immunoprophylactic and therapeutic regimes. We have cloned the equine IFN gamma cDNA to facilitate production of this cytokine for clinical evaluation in the horse. The predicted equine IFN gamma amino acid sequence is 67% identical to that of the human equivalent and 78% to the bovine equivalent.
The effects of exercise training on serum gastrin responses in the horse.
The Cornell veterinarian    January 1, 1994   Volume 84, Issue 1 41-45 
Furr M, Taylor L, Kronfeld D.Gastroendoscopic surveys have shown that horses in race training have a greater prevalence of gastric ulceration than sedentary horses. To determine if exercise affects gastric endocrine function the following experiment was performed. Four horses were fed total mixed ration of ground corn and chopped hay at 2% of their body weight, divided into 2 equal portions, daily. Horses were fasted overnight, and serum gastrin concentration was determined just before and 2 hours after feeding. The horses were then sprint trained on a high speed treadmill for 6 weeks. The response of serum gastrin to fee...
Glucose transport and glycolytic enzyme activities in erythrocytes of two-year-old thoroughbreds undergoing training exercise.
Veterinary research communications    January 1, 1994   Volume 18, Issue 6 417-422 doi: 10.1007/BF01839417
Arai T, Washizu T, Hamada S, Sako T, Takagi S, Yashiki K, Motoyoshi S.D-Glucose transport and cytosolic enzyme activities were measured in erythrocytes from 2-year-old thoroughbreds under continuous training exercise (race horses) and compared with those from untrained horses of various ages (sires, mares and untrained 2-year-old thoroughbreds). The activities of the glucose transport and glycolytic enzymes, hexokinase and pyruvate kinase, in the race horses' erythrocytes were elevated to 2-3.5 times above those of untrained horses. There were no significant differences in plasma glucose, triglyceride or IRI concentrations between the horses in training and untr...
Comparisons of tear proteins in the cow, horse, dog and rabbit.
Advances in experimental medicine and biology    January 1, 1994   Volume 350 331-334 doi: 10.1007/978-1-4615-2417-5_56
Davidson HJ, Blanchard GL, Montgomery PC.No abstract available
Urinary concentration of corticoids in normal horses and horses with hyperadrenocorticism.
Research in veterinary science    January 1, 1994   Volume 56, Issue 1 126-128 doi: 10.1016/0034-5288(94)90210-0
van der Kolk JH, Kalsbeek HC, Wensing T, Breukink HJ.The urinary corticoid:creatinine (c:c) ratio was determined in eight horses with hyperadrenocorticism (HAC). The mean (+/- SD) urinary c:c ratio of the eight horses with HAC (29 +/- 14 x 10(-6)) was significantly (P < 0.05) greater than the ratio in seven control horses (11 +/- 4.3 x 10(-6)). The urinary concentration of corticoids in control horses (201 +/- 60.4 nmol litre-1) was significantly (P 0.05) between both groups. As both false negative and false positive cases were found, it is concluded that a measurement of the urinary c:c ratio in the horse should not be used as the sole test...
[Pathology of cardiac ventricular aneurysms in the horse].
Schweizer Archiv fur Tierheilkunde    January 1, 1994   Volume 136, Issue 2 76-80 
Guarda F, Rattazzi C.The authors describe pathologic and histopathologic findings of three cardiac aneurysms in horses, two of which in the left ventricle and one in the right ventricle. The aneurysms were always associated with multiple foci of myocardiac fibrosis. A hypothesis concerning histogenesis of the lesion is formulated.
[The discovery of a horse skeleton from the 17th century in Kiesen in Bern canton].
Schweizer Archiv fur Tierheilkunde    January 1, 1994   Volume 136, Issue 1 4-8 
Imhof U.In 1968 a skeleton of a horse was found in Kiesen (Switzerland). This discovery could be dated by radiocarbon method: According to that this 13 years old gelding with a withers-height of 135 to 140 cm must have lived during the first third of the 17th century. Apparently it died by an accident. The bones are fully documented with pictures and scales and the findings described and discussed in detail.
Idiopathic peripheral neuropathy in a horse with knuckling.
Acta neuropathologica    January 1, 1994   Volume 88, Issue 4 389-393 doi: 10.1007/BF00310385
Furuoka H, Mizushima M, Miyazawa K, Matsui T.We report the pathological findings of the skeletal muscle and peripheral nerves from a male 14-months-old thoroughbred horse showing idiopathic knuckling. The affected animal, when in staining position, presented knuckling at the fetlock joint of both forelegs, and dragged both fore- and hindlegs when attempting forward movement. The skeletal muscles demonstrated neurogenic atrophy characterized by the scattering of single angular fibers, groups consisting of five to ten angular fibers, and multiple fascicles of atrophic and hypertrophic fibers. The severity of changes tended to be a distal g...
An unusual manifestation of nettle rash in three horses.
The Veterinary record    January 1, 1994   Volume 134, Issue 1 11-12 doi: 10.1136/vr.134.1.11
Bathe AP.Three horses with an apparent neurological disorder resulting from nettle rash showed signs of ataxia, distress and muscle weakness, and two of them had urticaria. In each case the condition resolved within four hours, with no long term problems or recurrence.
Effect of central or marginal location and post-operative exercise on the healing of osteochondral defects in the equine carpus.
Equine veterinary journal    January 1, 1994   Volume 26, Issue 1 33-39 doi: 10.1111/j.2042-3306.1994.tb04327.x
Barr AR, Wotton SF, Dow SM, Waterman AE, Goodship AE, Duance VC.The effects of osteochondral defect location and post-operative walking exercise on structural repair and recovery of joint function were examined in the midcarpal joints of ponies. Functional recovery was monitored by measuring ground reaction forces using a force plate. Structural repair was evaluated histologically and by measuring the total collagen and uronic acid content and relative proportions of Type I and II collagen in the repair tissue. Central defects tended to cause a more marked functional disturbance but were repaired with fibrocartilage rather than fibrous tissue in 3 out of 6...