Topic:Blood Analysis
Blood analysis in horses involves the examination of blood samples to assess various physiological and pathological conditions. This process provides insights into the health status of horses by evaluating components such as red and white blood cells, platelets, and various biochemical parameters. Blood analysis can help identify infections, anemia, metabolic disorders, and other health issues. Common tests include complete blood counts (CBC) and blood chemistry panels, which measure electrolytes, enzymes, and other substances. This page aggregates peer-reviewed research studies and scholarly articles that explore methodologies, findings, and implications of blood analysis in equine veterinary medicine.
Blood glutathione peroxidase activity in horses in relation to muscular dystrophy and selenium nutrition. The activity of glutathione peroxidase, a selenium containing enzyme, was measured in the blood of horses to determine its usefulness as an indicator of selenium status. In 15 horses the enzyme activity was positively related to the blood selenium concentration (P less than .001, r-0.98) over the range of enzyme activities of 8.2 to 140 units (mumoles NADP-oxidised/min/gHb) and selenium concentrations of 0.24 to 2.74 mumol/l. In a group of 8 horses which 2 foals had died with lesions of muscular dystrophy the enzyme activity increased from a mean of 11.8 units before treatment with selenium to...
The antidoping control in horseraces in Italy. The results and the improvement of the analytical procedures adopted for the control of doping in horses will be reported. This control has been systematically carried out in Italy for about 10 years in the laboratories of Italian Federation of Sport and Medicine in which the biological samples for the control of doping in various sport activities (football, cycling, athletics etc.) are also examined. In this way it is possible to use the same instruments for all these similar problems and compare the results. The analytical procedure is based on the following steps: 1) Extraction of the sampl...
The gas-liquid chromatograph and the electron capture detection in equine drug testing. Three gas-liquid chromatographic (G.L.C.) procedures discussed have been designed around the four "esses" of detection tests--speed, sensitivity, simplicity, and specificity. These techniques are admirably applicable to the very low plasma drug levels encountered in blood testing under pre-race conditions. The methods are equally applicable to post-race testing procedures, where both blood and urine samples are tested. Drugs can only rarely be detected by the electron capture detector (E.C.D.) without a prior derivatization step, which conveys to the drug(s) high electron affinity. Because of ...
Clinical evaluation of blood lactate levels in equine colic. Blood lactate levels were evaluated in 36 horses (43 cases) presented with colic. A correlation between increasing blood lactate levels and decreasing percentage survival has been shown. An appreciable anion gap was found in 7 of 10 cases analyzed in detail but in each case the entire gap could not be accounted for by lactate alone. Proposals are offered to account for the unmeasured anions. Blood lactate determination is suggested as a prognostic rather than a diagnostic aid for the equine practitioner and should be used to augment other clinical findings in the horse exhibiting colic.
[Activity of serum gonadotropins in pregnant zebras and mares]. Blood was collected from 28 zebra mare (Equus burchellia antiquorum) immediately after being shot in the Kruger National Park. The serum was separated within two hours after collection and then stored at -15 degrees C for later assay. Of these, thirteen selected samples were tested for gonadotrophic activity. The stage of pregnancy was determined from a foetal growth curve. Blood samples from pregnant horse mares were collected by venipuncture. Nine mares were sampled. Seven blood samples at different stages of pregnancy were collected from one mare, four from another and only one sample each ...
The equine practice laboratory. The authors discuss the value of a practice laboratory to the equine clinician and its priorities. Laboratory examinations of particular value are described in relation to their clinical application. The need to establish normal values according to laboratory and horse population is stressed. Tables of normal parameters related to age groups of horses in the authors' practice are presented.
Pulmonary arterial wedge pressures: blood gas tensions and pH in the resting horse. Blood pressure recordings were made from right atrium, right ventricle, pulmonary trunk, and pulmonary arterial "wedge" positions in the standing, resting, adult horse. Similarly, comparisons were made of blood samples collected from these vascular positions, as well as from jugular vein and carotid artery. A consistently lower partial pressure of carbon dioxide and a greater partial pressure of oxygen and pH were found in blood samples from pulmonary arterial wedge than from carotid artery. A technique for safe and rapid collection of pulmonary trunk and pulmonary arterial wedge blood gases, ...
The kinetics of hematopoiesis in the light horse II. The hematological response to hemorrhagic anemia. Hemorrhagic anemia was experimentally produced in three Standardbred horses by removing approximately 63% of the red cell mass and the accompanying plasma during a three day interval. Red cell parameters were examined daily for 45 days and then weekly until termination of the experiment 250 days after production of the anemia. Leukocytes, platelets and bone marrow aspirates were examined at regular intervals for 25 days after the final phlebotomy. At 24 hours after the last bleeding, 75-selenomethionine was injected intravenously to measure the lifespan of the newly produced erythrocytes. The ...
Cobalt metabolism in horse. Serum level and biosynthesis of vitamin B12. The levels of serum vitamin B were determined on 16 mature partly warm-blooded, partly Finnish rural-race horses by the radioisotopic competitive inhibition assay method. The mean value from three samplings carried out in dupli- or triplicate was 1.54 ± 0.16 ng/ml. The utilization of serum inorganic cobalt for cyanocobalamin synthesis was studied on two geldings, which received a dose of 200 µCi CoGl i.v. A Sephadex G-100 gel filtration was carried out with the serum proteins from serial blood samplings at different time intervals 15 min. to 48 hrs. after administration. The gel filtration s...
The D(+) xylose absorption test in the horse. SUMMARY
A D(+) xylose absorption test has been standardised for use in the horse. A dose of 2 g. xylose/Kg. body-weight is required to produce a maximum plasma xylose level of 30 mg./100ml. after two hours. There are limitations to the procedure being used as a routine clinical screening test of small intestinal dysfunction in the horse.
RÉSUMÉ
On a standardisé un test d'absorption du D(+) xylose pour le cheval.
Une dose de 2 gr de xylose par kilo de poids vif est nécessaire pour produire une élevation du xylose plasmatique jusqu'à 30 mg par 100 ml après deux heures.
Il y a d...
Progesterone concentration in the peripheral plasma of the mare during the oestrous cycle and early pregnancy. Progesterone concentrations were assayed by a competitive protein-binding technique
in peripheral plasma samples collected twice
daily during four oestrous cycles of three
mares, and once a day during the first seven
weeks of pregnancy in four mares. Large
variations were found in progesterone levels
between morning and evening samples on the
same day in the same mare.
The lowest progesterone concentration
was found about the time of ovulation. Within 24 hours after ovulation the progesterone
concentration increased and two peaks, one
at 5 days and another at 8 days, were found.
Be...
Comparative studies on the haemolytic and Treponema pallidum immobilizing complement activity in the serum of different species. Complement activity in the serum of eight species has been studied in two ways: by immobilization of sensitized with human or rabbit antibody and by haemolysis of sheep red cells sensitized with rabbit antibody. Serum of the pig, monkey and man was actively haemolytic but contained a heatlabile factor that immobilized unsensitized in the presence of guinea-pig complement and precluded the detection of immune immobilizing activity. Sera of other species, although without action on unsensitized treponemes, even with added guinea-pig complement, differed in their relative haemolytic and immobil...
Immunological pregnancy diagnosis in the mare. An immunological gel-diffusion test for the diagnosis of pregnancy in the mare is described. 56 blood samples from 50 different mares were tested. Control tests were made both by the Ashheim-Zondek method and by clinical examination. The accuracy of the immunological method was 96.4 %. No false positive reactions were observed. It is recommended to draw the blood sample at approximately 45 days or more after the last service. The immunological method is simple, cheap and accurate and is recommended as a routine test for the diagnosis of pregnancy in mares.
Sampling of equine pulmonary vein blood. A technique involving thoracotomy for the implantation of polythene catheters through the left atrium into the pulmonary veins has been used in 2 ponies. In both animals the catheters enabled blood samples to be obtained from the pulmonary veins for more than 5 weeks. Post mortem examination after termination of the experiment showed the procedure and catheters produced the minimum of adverse effects.
The electrophoretic pattern of serum proteins in normal animals. The normal electrophoretic pattern and values for total and differential serum proteins have been determined for 100 cattle, 70 horses, 15 dogs, and 24 rabbits. Comparative studies were also made on 10 pigs, 10 goats, 10 sheep and 15 domestic fowls. The mean total serum protein for normal cattle was 7·16 g.%. The individual protein fractions were: albumen 43·1; alpha-globulin 110; beta-globulin 12·0; gamma-globulin 33·9%.
The mean total serum protein for normal horses was 7·3 g.%. The individual protein fractions were: albumen 33·5; globulins: alpha-1 15·0, alpha-2 16·0, beta-globul...