Analyze Diet

Topic:Equine Health

Equine health encompasses the study and management of diseases, disorders, and overall well-being of horses. It involves understanding various physiological systems, preventive care, and treatment strategies to maintain optimal health in equine populations. Common areas of focus include nutrition, infectious diseases, orthopedic conditions, and reproductive health. Research in equine health aims to advance knowledge on diagnostic methods, therapeutic interventions, and management practices that improve horse welfare and performance. This page collects peer-reviewed research studies and scholarly articles that explore the diverse aspects of equine health, offering insights into current findings and advancements in the field.
The isolation, characterisation and quantification of the equine plasma lipoproteins.
Equine veterinary journal    September 1, 1991   Volume 23, Issue 5 353-359 doi: 10.1111/j.2042-3306.1991.tb03737.x
Watson TD, Burns L, Love S, Packard CJ, Shepherd J.Plasma lipoproteins were isolated from eight Thoroughbred horses and eight Shetland ponies on the basis of particle size by gel filtration chromatography and according to density using rate-zonal ultracentrifugation. Three major classes corresponding to very low density lipoproteins (VLDL), low density lipoproteins (LDL) and high density lipoproteins (HDL) were identified and characterised by their lipid and apolipoprotein compositions. The particle size distributions of each class were determined by electron microscopy and non-denaturing polyacrylamide gradient gel electrophoresis. HDL was fo...
Oestrogen production by the preimplantation donkey conceptus compared with that of the horse and the effect of between-species embryo transfer.
Journal of reproduction and fertility    September 1, 1991   Volume 93, Issue 1 141-147 doi: 10.1530/jrf.0.0930141
Heap RB, Hamon MH, Allen WR.Aromatase distribution in membranes of preimplantation horse and donkey conceptuses was compared by measuring the incorporation of [3H]androstenedione into oestrone and oestradiol-17 beta. In the donkey conceptus, aromatase activity was similar in all the tissues examined (yolk sac, chorionic girdle and allantochorion), whereas in the horse it was generally lower and showed the relationship chorionic girdle greater than yolk sac greater than allantochorion. A higher proportion of labelled precursor was incorporated into oestradiol-17 beta by extra-embryonic tissues of the donkey compared with ...
Osteochondrosis in the horse–searching for the key to pathogenesis.
Equine veterinary journal    September 1, 1991   Volume 23, Issue 5 331-338 doi: 10.1111/j.2042-3306.1991.tb03733.x
Jeffcott LB.This paper reviews current developments in equine osteochondrosis complex and the clinical syndromes associated with it. Although the primary lesion has been defined as a failure of endochondral ossification, its definitive cause is unknown and appears to involve heredity, growth rate, nutrition, mineral imbalance, endocrinological dysfunction and biomechanical trauma. Despite the international importance of osteochondrosis in horses, surprisingly few controlled investigations have been performed on its pathogenesis. The studies that have been conducted suggest that local effects on differenti...
Pulmonary aspergillosis associated with acute enteritis in a horse.
Journal of the American Veterinary Medical Association    September 1, 1991   Volume 199, Issue 5 589-590 
Hattel AL, Drake TR, Anderholm BJ, McAllister ES.Invasive pulmonary aspergillosis was detected at postmortem examination of an 8-year-old Quarter Horse mare that had a history of diarrhea, laminitis, and bilateral nasal discharge. A diagnosis of Ehrlichia risticii infection was made on the basis of clinical signs of diarrhea and pyrexia, high serum antibody titer to E risticii (1:2,560), and multiple Salmonella-negative cultures obtained from fecal and colonic specimens. Possible pathogenic mechanisms contributing to the development of pulmonary aspergillosis secondary to enteric disease include mycotic invasion of the intestinal tract or im...
Relaxant effects of theophylline and clenbuterol on tracheal smooth muscle from horse and rat in vitro.
Journal of veterinary pharmacology and therapeutics    September 1, 1991   Volume 14, Issue 3 310-316 doi: 10.1111/j.1365-2885.1991.tb00841.x
Ingvast-Larsson C.A comparison between the relaxant effects of clenbuterol and theophylline on horse tracheal smooth muscle has been made in vitro. Rat tracheal smooth muscle was also investigated as a reference. The tracheal preparations were initially contracted with carbachol since the smooth muscle did not spontaneously develop tone. The response of the carbachol-contracted preparations to theophylline was the same in the two species. The response to clenbuterol varied. In only five out of eleven horses were the tracheal smooth muscles sensitive to clenbuterol (mean pD2 = 7.92 M). In the remaining six horse...
Clinical signs and humoral immune response in horses following equine herpesvirus type-1 infection and their susceptibility to equine herpesvirus type-4 challenge.
Research in veterinary science    September 1, 1991   Volume 51, Issue 2 141-148 doi: 10.1016/0034-5288(91)90004-8
Stokes A, Corteyn AH, Murray PK.A group of three horses was experimentally infected with equine herpesvirus type 1 (EHV-1) and showed clinical signs characterised by a biphasic febrile response, leucopenia and cell associated viraemia accompanied by virus shedding from the nasopharynx. A second exposure to the virus 18 days later resulted in the isolation of virus from the nasopharynx of one horse. This and a further group of three EHV-1 seropositive horses were subsequently infected with equine herpesvirus type 4 (EHV-4) 147 days after the initial EHV-1 infection and virus was shed from the nasopharynx in the absence of cli...
Subchondral bone cysts with fractures of the extensor processes in a horse.
Journal of the American Veterinary Medical Association    September 1, 1991   Volume 199, Issue 5 595-597 
Scott EA, Snyder SP, Schmotzer WB, Pool R.Probable cause of fracture in a Paint gelding was a congenital bone defect involving the extensor process area of the right and left forelimb distal phalanges. Radiographically and histologically, subchondral bone cysts at the fracture lines were suspected. These cysts were thought to have developed in association with abnormal ossification centers at the extensor process areas of the third phalanx. Partial avulsion of weak extensor processes would then occur from natural forces exerted on these weakened bony prominences via the common digital extensor tendon. Support for osteochondrosis as a ...
The relationship between meteorological features and equine grass sickness (dysautonomia).
Equine veterinary journal    September 1, 1991   Volume 23, Issue 5 370-373 doi: 10.1111/j.2042-3306.1991.tb03740.x
Doxey DL, Gilmour JS, Milne EM.Local weather patterns associated with 15 outbreaks of equine grass sickness in eastern Scotland were studied. The majority showed a trend toward cooler drier weather associated with irregular ground frosts. This would not preclude the hypothesis that fungi might be connected with the aetiology of grass sickness.
Percutaneous transvenous removal of a broken jugular catheter from the right ventricle of a foal.
Equine veterinary journal    September 1, 1991   Volume 23, Issue 5 392-393 doi: 10.1111/j.2042-3306.1991.tb03745.x
Ames TR, Hunter DW, Caywood DD.No abstract available
Equine nutritional research: some food for thought?
Equine veterinary journal    September 1, 1991   Volume 23, Issue 5 323-325 doi: 10.1111/j.2042-3306.1991.tb03729.x
Cí·¯ord D.No abstract available
Electroencephalographic power spectrum analysis as a monitor of anesthetic depth in horses.
Veterinary surgery : VS    September 1, 1991   Volume 20, Issue 5 362-371 doi: 10.1111/j.1532-950x.1991.tb01284.x
Otto K, Short CE.Electroencephalographic (EEG) power spectrum analysis was performed in 18 conscious, adult horses for evaluation as control values for EEG data obtained during anesthesia. Computer-processed total amplitudes for the frequency range 0 to 32 Hz were mainly between 400 and 600 microV, with 80% spectral edge frequency between 16.6 and 32.5 Hz. The highest electrical activity was in the delta band (41.3 +/- 4.4% of total amplitude); there was a less pronounced activity in the beta (34.2 +/- 5.2%), theta (13.6 +/- 1.5%), and alpha (10.0 +/- 1.0%) bands. The applicability of EEG power spectrum analys...
Scintigraphic identification of skeletal muscle damage in horses 24 hours after strenuous exercise.
Equine veterinary journal    September 1, 1991   Volume 23, Issue 5 347-352 doi: 10.1111/j.2042-3306.1991.tb03736.x
Morris E, Seeherman HJ, O'Callaghan MW, Schelling SH, Paradis MR, Steckel RS.The uptake of the bone-seeking radiopharmaceutical 99mTc-MDP by damaged skeletal muscle in horses is evaluated. Twenty-four hours following strenuous exercise, 109 racehorses with a history of inadequate athletic performance and subtle lameness were imaged using scintigraphic techniques. Ten horses (9.2 per cent) demonstrated abnormal uptake of the radioisotope within skeletal muscles. A muscle biopsy from one of these horses confirmed that the muscles with increased scintigraphic activity had histologic evidence of rhabdomyolysis. This technique allows localisation and relative quantification...
Effects of chlorhexidine gluconate and chlorous acid-chlorine dioxide on equine fibroblasts and Staphylococcus aureus.
Veterinary surgery : VS    September 1, 1991   Volume 20, Issue 5 306-310 doi: 10.1111/j.1532-950x.1991.tb01272.x
Redding WR, Booth LC.Equine fibroblasts and Staphylococcus aureus were exposed for 30 minutes to six dilutions of chlorhexidine gluconate, a chlorous acid-chlorine dioxide irrigation solution, a chlorous acid-chlorine dioxide disinfectant, and phosphate buffered saline controls. Cell viability was determined by trypsinizing the cells, staining them with trypan blue, and counting cells that did not take the stain. All fibroblasts were killed when exposed to 1.0% and 0.5% chlorhexidine. The survival rate of fibroblasts increased linearly with decreasing concentrations of chlorhexidine gluconate, with a peak survival...
Azathioprine for treatment of immune-mediated thrombocytopenia in two horses.
Journal of the American Veterinary Medical Association    September 1, 1991   Volume 199, Issue 5 591-594 
Humber KA, Beech J, Cudd TA, Palmer JE, Gardner SY, Sommer MM.Azathioprine, a thiopurine antimetabolite used in the treatment of immune-mediated thrombocytopenia in human beings and dogs, was used in 2 cases of immune-mediated thrombocytopenia in horses that failed to respond to corticosteroid therapy alone. Platelet counts were increased to acceptable values in both horses. One horse returned to a successful racing career, and the other was euthanatized after developing renal disease and mild laminitis.
Clinico-pathological analysis of foal diseases from 237 autopsy cases.
The Kitasato archives of experimental medicine    September 1, 1991   Volume 64, Issue 2-3 149-156 
Oikawa MA, Kamada M, Yoshihara T, Kaneko M, Yoshikawa T.To elucidate the current status of foal diseases in Japan, clinico-pathological analysis was conducted on 237 foal autopsy cases. As a result, bacterial infection was identified as an important cause of foal death. Most of the bacteria isolated from these cases were ubiquitous, opportunistic, environmental organisms, known to be non-pathogenic to mature animals. Most of cases with bacterial infection were diagnosed as having hypogammaglobulinemia, i.e., failure of passive transfer. In addition, the mean weight of thymuses in foals affected by bacterial infection tended to be lower than that of...
Intake, digestion and gastrointestinal transit time in resting donkeys and ponies and exercised donkeys given ad libitum hay and straw diets.
Equine veterinary journal    September 1, 1991   Volume 23, Issue 5 339-343 doi: 10.1111/j.2042-3306.1991.tb03734.x
Pearson RA, Merritt JB.Four donkeys and four ponies maintained in climate rooms, were provided with meadow hay or barley straw supplemented with minerals and vitamins ad libitum. Both diets were given to all animals for periods of 21 days. Measurements were made during the last seven days following single doses of two non-absorbable markers (Cr-fibre and Co-EDTA). After six weeks the donkeys repeated the trial, walking 14 km and ascending 260 m five days per week. At rest ponies ate more than donkeys, however the donkeys showed a higher digestibility of dry matter (DM), organic matter (OM) and acid detergent fibre (...
Beta-adrenergic receptor activity in ponies with recurrent obstructive pulmonary disease.
American journal of veterinary research    September 1, 1991   Volume 52, Issue 9 1416-1422 
Scott JS, Berney CE, Derksen FJ, Robinson NE.Pulmonary function measurements were made in control ponies and in ponies with recurrent obstructive pulmonary disease (principals) during clinical remission and during an attack of acute airway obstruction. The ponies were given beta-adrenergic antagonists and agonists to determine the role of beta receptors in recurrent obstructive pulmonary disease, and to determine the subtypes of beta receptors mediating bronchodilation in ponies. Aerosol administration of the beta antagonists, propranolol (beta 1 and beta 2), atenolol (beta 1), and butoxamine (beta 2) decreased dynamic compliance (Cdyn) ...
Lag screw and cancellous bone graft fixation of transverse proximal sesamoid bone fractures in horses: 25 cases (1983-1989).
Journal of the American Veterinary Medical Association    September 1, 1991   Volume 199, Issue 5 606-612 
Henninger RW, Bramlage LR, Schneider RK, Gabel AA.Case records of 25 horses with transverse fractures of the proximal sesamoid bone were reviewed to evaluate the success of treatment. All fractures were repaired by use of lag screw fixation and an autogenous cancellous bone graft because the fracture fragments were considered too large for surgical removal and reconstruction of the suspensory apparatus was necessary. Radiography was performed in all cases, and the fractures were classified into 3 types: (1) proximal midbody fractures, which included all fractures in the proximal aspect of the sesamoid bone that resulted in fragments involving...
Dietary protein level and energy metabolism during treadmill exercise in horses.
The Journal of nutrition    September 1, 1991   Volume 121, Issue 9 1462-1469 doi: 10.1093/jn/121.9.1462
Miller-Graber PA, Lawrence LM, Foreman JH, Bump KD, Fisher MG, Kurcz EV.Six conditioned Quarter Horse mares were used in a crossover design to assess the effect of the dietary protein level on intramuscular and hepatic glycogen and lactate, oxygen uptake and blood lactate, pyruvate and free fatty acids. After a 2-wk adaptation period to either a 9.0% (control) or an 18.5% crude protein diet, each horse performed an exercise test. The horses were exercised for 15 min on an 11% grade treadmill at 4.5 m/sec. The exercise test was performed 3-4 h after a meal. Venous, arterial and mixed-venous blood samples were taken simultaneously at rest and during exercise. Muscle...
Clinical and biochemical features of grass sickness (equine dysautonomia).
Equine veterinary journal    September 1, 1991   Volume 23, Issue 5 360-364 doi: 10.1111/j.2042-3306.1991.tb03738.x
Doxey DL, Milne EM, Gilmour JS, Pogson DM.An attempt has been made to assess the diagnostic value of clinical features seen at initial examination of horses with grass sickness, colic cases and cases submitted as possible grass sickness but diagnosed subsequently as some other condition. There appears to be no single pathognomonic sign for grass sickness. A range of signs has been associated with grass sickness but these are of value only when related to the length of illness and the history. Biochemical tests related to intestinal tissue damage, stress and dehydration were evaluated and most were found to be of value in diagnosing ac...
Microvascular circulation of the cecum in horses.
American journal of veterinary research    September 1, 1991   Volume 52, Issue 9 1545-1550 
Dart AJ, Snyder JR, Julian D, Hinds DM.The microvascular circulation of the cecum was studied in 15 adult horses, using microangiography and light microscopy combined with gross studies and scanning electron microscopy of vascular replicas. After heparinization, the horses were euthanatized and the cecum was transected at the cecocolic junction. Blood was flushed free of the circulation with isotonic NaCl and the cecal lumen was slightly distended. In 6 horses, the vascular system was injected with a modified radiopaque medium and evaluated radiographically. Sections evaluated radiographically were also prepared for histologic exam...
Serum and peritoneal fluid amylase and lipase reference values in horses.
Equine veterinary journal    September 1, 1991   Volume 23, Issue 5 390-391 doi: 10.1111/j.2042-3306.1991.tb03744.x
Parry BW, Crisman MV.No abstract available
Clinical investigations of halothane and isoflurane for induction and maintenance of foal anesthesia.
Journal of veterinary pharmacology and therapeutics    September 1, 1991   Volume 14, Issue 3 300-309 doi: 10.1111/j.1365-2885.1991.tb00840.x
Steffey EP, Willits N, Wong P, Hildebrand SV, Wheat JD, Meagher DM, Hodgson D, Pascoe JR, Heath RB, Dunlop C.Fifty-eight foals were divided into two groups for study of aspects of the clinical anesthetic management of foals and to characterize effects of halothane (n = 30) and isoflurane (n = 28) in foals. There were no significant differences (P greater than 0.05) in the demographics of the two groups. Results of hemograms and biochemical analysis of venous blood samples before and after anesthesia were either not influenced or only mildly (clinically unimportant) affected by either agent. Like adult horses, foals have an increased PaCO2 when anesthetized with inhaled anesthetics. We could detect no...
Unilateral hypoxic pulmonary vasoconstriction in the dog, pony and miniature swine.
Respiration physiology    September 1, 1991   Volume 85, Issue 3 355-369 doi: 10.1016/0034-5687(91)90074-s
Elliott AR, Steffey EP, Jarvis KA, Marshall BE.The hypoxic pulmonary vasoconstrictor response to unilateral hypoxia was analyzed in pentobarbital anesthetized dogs (n = 5), miniature swine (n = 5), and ponies (n = 5). The left and right lungs (LL, RL) were separately ventilated with the LL exposed to inspired oxygen concentrations (CIO2) of 100%, 12%, 8% or 4%, while the RL always received a CIO2 = 100%. Pulmonary blood flow distribution was measured using 15 microns radioactive microspheres. LL PAO2, and percent pulmonary blood flow diversion (%FD) were calculated at each CIO2. At CIO2 of 4% there were significant differences (P greater t...
Congenital encephalomyelopathy in a quarter horse.
Equine veterinary journal    September 1, 1991   Volume 23, Issue 5 394-396 doi: 10.1111/j.2042-3306.1991.tb03746.x
Seahorn TL, Fuentealba IC, Illanes OG, Storts RW.No abstract available
Ivermectin treatment of horses: effect on proportion of faecal-fouled areas in pastures.
The Veterinary record    August 27, 1991   Volume 129, Issue 7 140-141 doi: 10.1136/vr.129.7.140
Ewert KM, DiPietro JA, Danner CS, Lawrence LM.No abstract available
Conservative treatment of an incomplete longbone fracture of a hindlimb of four horses.
The Veterinary record    August 17, 1991   Volume 129, Issue 7 133-136 doi: 10.1136/vr.129.7.133
Harrison LJ, May SA, Richardson JD, Mills G, Dixon P.Four horses with an incomplete fracture of a hindlimb longbone were examined. In two, the tibia had been fractured by external trauma. In the other two horses proximal metatarsal 3 had fractured during normal activity. The diagnoses were made radiographically and the horses were treated conservatively by box rest. The fractures healed satisfactorily and the horses became sound.
Botulism associated with feeding alfalfa hay to horses.
Journal of the American Veterinary Medical Association    August 15, 1991   Volume 199, Issue 4 471-472 
Wichtel JJ, Whitlock RH.Botulism was believed to be the cause of progressive symmetric myasthenia in 8 horses on a farm in North Carolina. One horse was found dead, 6 were euthanatized after becoming recumbent, and 1 affected horse recovered. Cecal and colonic contents of 2 horses were determined to contain Clostridium botulinum spores. Alfalfa hay that was fed to the horses contained spores and toxin.
Probable congenital esophageal stenosis in a thoroughbred foal.
Journal of the American Veterinary Medical Association    August 15, 1991   Volume 199, Issue 4 483-485 
Clabough DL, Roberts MC, Robertson I.Esophageal stenosis was diagnosed in a 7-day-old Thoroughbred foal referred for evaluation of bilateral milky nasal discharge. Double-contrast radiography revealed concentric narrowing of the esophagus at the level of the fifth rib, overlying the base of the heart. Lateral displacement of the esophagus was not apparent. X-ray computed tomography of the cranial portion of the thorax confirmed normal cardiac and great vessel anatomy, ruling out vascular ring anomaly. A nasogastric tube was placed, extending past the stenosis and into the stomach, and the foal was fed mares' milk via this tube. O...
Detection of Toxoplasma gondii in equine eyes.
The Veterinary record    August 10, 1991   Volume 129, Issue 6 128 doi: 10.1136/vr.129.6.128-a
Turner CB, Savva D.No abstract available