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T L?ken 《Nordisk veterinaermedicin》1984,36(7-8):259-265
A sample of ergot from meadow grass collected in the south-western part of Norway was examined for alkaloids and dosed orally to four lambs about 10 months old. Sclerotia were dosed at a rate of 0.12-0.75 g per kg body weight per day for 4-27 days. The concentration of total alkaloids in the sclerotia was estimated to be about 0.4%. Ergosine, ergocristine, ergotamine and the three corresponding isomers were identified by thin-layer chromatography. Of the total alkaloids, ergosine and ergocristine constituted 35% each, ergotamine 15% and the isomers 5% each. Three lambs dosed outdoors in cold and wet weather all became ill, with anorexia and increased pulse rate. No symptoms nor post mortem lesions were seen in the single lamb kept indoors. On post mortem examination of the three lambs showing symptoms, hyperemic mucosae, haemorrhages, erosions and necroses in the digestive tract, most pronounced in abomasum and cecum, were demonstrated. In two lambs, slight oedema was found distally in some of the limbs and tail, but no sign of gangrene was observed. 相似文献
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The oestrogen levels were assessed in 180 urine samples taken from 20 cows. The animals had received over 15 days 40 mg one-per-cent oily solution of chloromadinone acetate. The solution had been applied orally or by pour-on methods. The curves of oestrogen excretion were identical for both methods of application, both during and after completed administration. In other words, the effect obtainable from pour-on application is just as good as that obtainable from oral administration. 相似文献
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