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in Journal of the American Veterinary Medical Association
in Journal of the American Veterinary Medical Association
in Journal of the American Veterinary Medical Association
in Journal of the American Veterinary Medical Association
in Journal of the American Veterinary Medical Association
in Journal of the American Veterinary Medical Association

Summary

Effects of the following treatments on abomasal and duodenal myoelectric activity in yearling cattle were studied: 2 ml of 0.9% sodium chloride solution (nacl); 0.07 mg of bethanechol (bet)/kg of body weight; 0.1 mg of metoclopramide (met)/kg; and 0.07 mg of bethanechol and 0.1 mg of metoclopramide (betmet)/kg. All treatments were administered SC during the early part of phase I of the migrating myoelectric complex. Myoelectric signals were recorded for 4 hours after administration of the treatments from 1 electrode in the antrum and 3 electrodes in the duodenum.

For the antral spike rate (asr), there was no significant difference among treatments during the first hour, but the asr was significantly (P < 0.05) greater during hours 2 to 4 after treatment with betmet, compared with asr. for met alone. The duodenal spike rate (dsr) was significantly (P < 0.05) greater during the first hour after administration of betmet than after the other treatments. After administration of BET, DSR was significantly (P < 0.05) greater than after met or nacl. There was no difference in dsr after met, compared with dsr after nacl. There was no significant difference in dsr among treatments during the second and third hours. The total antegrade propagating spike (tatp) count was greater after administration of betmet in all hours, compared with the other treatments. The ratio of taps to total spikes on the orad-most duodenal electrode was significantly (P < 0.05) greater after betmet during hours 1 and 2.

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in American Journal of Veterinary Research
in Journal of the American Veterinary Medical Association

Abstract

OBJECTIVE

To describe cryptorchidectomy performed with a paramedian or inguinal approach in domestic pigs and compare findings for commercial-breed pigs with those for pot-bellied pigs.

ANIMALS

47 client-owned (33 commercial-breed and 14 pot-bellied) pigs.

PROCEDURES

Medical records were searched to identify pigs that underwent surgical treatment for cryptorchidism from 2000 to 2018. Signalment, location of retained testes, surgeon, surgical approach, surgery time, anesthesia time, and postoperative complications were recorded. Complications were assessed with long-term follow-up. Age and surgical variables were compared between commercial-breed pigs and pot-bellied pigs.

RESULTS

Retained testes were most commonly located in the abdomen (27/47 [57%] left-sided, 15/47 [32%] right-sided, and 2/47 [4%] bilateral); 2 pigs each had 1 retained testis in the inguinal region, and 1 pig had 1 retained testis in the abdomen and 1 in the inguinal region. Forty-four pigs with abdominally retained testes were treated successfully with a paramedian surgical approach, including 3 for which an inguinal approach was attempted first. An inguinal approach was successful for 3 pigs with inguinally retained testes and 1 with an abdominally retained testis. Standard castration techniques were used for normally descended and inguinally retained testes. Long-term follow-up was available for 34 pigs; minor complications were reported for 3 (9%). Pot-bellied pigs were significantly older than commercial-breed pigs. No other intergroup differences were found.

CONCLUSIONS AND CLINICAL RELEVANCE

The paramedian surgical approach was successfully used for removal of abdominally retained testes in all pigs that underwent the procedure. The overall complication rate for cryptorchidectomy in the study sample was low.

Full access
in Journal of the American Veterinary Medical Association
in Journal of the American Veterinary Medical Association