The Veterinary record
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The Veterinary record · Nov 2009
Effects of the administration of oxytocin or carbetocin to dairy cows at parturition on their subsequent fertility.
A total of 501 dairy cows were allocated sequentially to be treated immediately after parturition with either 25 iu oxytocin or 35 mg carbetocin, or to be left untreated. Any abnormal parturition, including assisted calving, the birth of twins or dead calves, retained fetal membranes or hypocalcaemia, was recorded, and the cows were examined between 28 and 42 days after calving for endometritis. ⋯ The incidence of endometritis was similar (14 per cent, 16 per cent and 19 per cent) and the median intervals from calving to pregnancy were similar (118, 121 and 119 days) for the cows treated with oxytocin, carbetocin or receiving no treatment, respectively. The incidence of endometritis and the median intervals from calving to pregnancy were also similar between the groups for the cows that had an abnormal parturition.
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The Veterinary record · Jun 2009
Randomized Controlled TrialMechanical ventilation of six dogs anaesthetised with isoflurane or sevoflurane delivered by a Komesaroff anaesthetic machine.
After intravenous induction, six beagles were connected to a Komesaroff machine provided with a single in-circuit vaporiser and ventilated mechanically at either nine or 14 breaths/minute while anaesthetised with either isoflurane or sevoflurane. The vaporiser was initially set at position 4/4 (fully open) and the anaesthetic concentrations were measured after one and five minutes; the vaporiser was then set at the lowest setting able to maintain anaesthesia. Cardiorespiratory variables were measured throughout the study. In most cases anaesthesia was maintained at setting 1/4 with isoflurane and at setting 1.5/4 or 2/4 with sevoflurane.
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The Veterinary record · Aug 2008
Comparative StudyMaintenance of anaesthesia in sheep with isoflurane, desflurane or sevoflurane.
Rapid recovery from anaesthesia is advantageous in small ruminants, to reduce the risk of regurgitation. Theoretically, the least soluble inhalation agents should result in the fastest recoveries, but using additional injectable agents may negate this advantage. This study compared three inhalation agents for the maintenance of anaesthesia in sheep. ⋯ The mead (sd) postanaesthetic times to first swallow, first chewing attempts and ability to maintain their head lifted for five minutes were, respectively, 3.95 (2.53), 6.37 (3.68) and 32.8 (18.1) minutes for isoflurane, 3.62 (0.98), 7.66 (0.78) and 38.8 (16.6) minutes for sevoflurane, and 4.37 (1.65), 6.95 (1.52) and 29.8 (11.5) minutes for desflurane. Two sheep had poor quality recoveries after the use of sevoflurane, but all the other sheep recovered uneventfully. All three inhalation agents were suitable for the maintenance of anaesthesia in sheep but, as used in this study, there were no differences between them in speed of recovery.