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Biomedical subjects

G H Arthur

Publications and source records attributed to G H Arthur.

13 recordsLinked to original sources
PubMed1982

Obstetrical conditions in goats.

Eighty-nine obstetrical cases in goats were treated at a University Veterinary Clinic in Saudi Arabia over a two-year period. The causes of dystocia are analysed and the treatment described. The salient features of these obstetrical cases in goats were very similar to those which have been recorded for sheep. The outcome of treatment depended mainly on the general health of the patient when admitted.

Animals↗
PubMed1980

Ligation and sclerosis of the epididymis in the bull.

In an attempt to induce permanent aspermia the caudae epididymes of 17 bulls were subjected to ligation or injection with ethanolamine or chlorhexidine in dimethyl sulphoxide. Nylon and polyglycolic acid ligatures had little or no effect on the sperm counts although these materials were used in only three bulls. Steel ligation induced aspermia of several weeks' duration in four of six bulls. Although the effect in at least three of these animals might have been permanent, the trial was discontinued because the other two bulls, treated identically, showed little response. Ethanolamine injected into the epididymis also had little or no effect on the ejaculate. By contrast the chlorhexidine preparation produced an almost immediate aspermia sustained until the bulls were slaughtered a year later.

Animals↗
PubMed1975

Influence of intrauterine saline infusion upon the oestrous cycle of the mare.

The effect of intrauterine saline on reproductive function was studied by infusion of mares in anoestrus, dioestrus, oestrus and prolonged dioestrus. Anoestrous mares were unaffected except near the beginning and end of the breeding season when anovulatory heats were induced. Dioestrous mares infused between Days 5 and 9 returned to heat an average of 3-8 days earlier than expected, and infusions during dioestrus were followed by ovulatory heats of normal fertility. Three mares in prolonged dioestrus showed ovulatory heats within 3 to 9 days of infusion. Infusions during oestrus had no appreciable effect. Repeated infusions were clinically harmless but post-infusion bacteriological swabs from the uterus were positive. In two cases studied, infusion was followed by a fall in peripheral plasma progestagen concentrations. Evidence was obtained that vaginal and cervical dilatation and oxytocin were not involved in the mechanisms and it is postulated that the luteolytic effect of intrauterine saline is mediated by prostaglandin.

Animals↗