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Recording of the Reticular Motility in Cattle with Experimental and Spontaneous Traumatic Reticuloperitonitis
Registrering av nätmagsmotoriken hos nötkreatur med experimentell och spontan traumatisk peritonit
Acta Veterinaria Scandinavica volume 12, pages 325–334 (1971)
Abstract
Using the method described in a previous publication for recording the reticulum action in normal cows the authors have investigated three cows with experimentally produced reticuloperitonitis as well as a group of cows with spontaneous peritonitis under treatment at the stationary clinic. The experimental animals were provided with permanent rumen fistulas.
In the three cows with experimentally produced peritonitis the pointed object worked loose spontaneously during the first 24 hrs. The symptoms were mild after the first perforation and became aggravated after further perforations.
An abnormally prolonged reticulum interval was recorded immediately after the perforation and continued to be clearly distinguishable for two to three days. In the cows with spontaneous peritonitis, this change was observed only in the acute stage.
Prolongation of the second phase of the reticulum was the most pronounced finding from the recordings of the reticular movements, both in the cows with experimental peritonitis and in those in the spontaneous group. The change was at its height after two to seven days, and then subsided gradually in the experimental animals in which repeated recordings had been made.
The pressure elevation in reticulum during the contractions was lower both in the animals with experimental peritonitis and in the spontaneous group than in the healthy animals.
The cows with reticuloperitonitis also displayed impaired ability to pass the recording catheter from the atrium ruminis to the reticulum.
Sammanfattning
Med den i ett tidigare arbete beskrivna metodiken för registrering av nätmagsmotoriken på normala kor undersöktes dels tre kor med experimentellt framkallad reticuloperitonit dels spontana fall, som var intagna för stationär behandling. Försökskorna hade försetts med permanenta våmfistlar.
På samtliga försökskor lossnade det spetsiga föremålet spontant under första dygnet. Symtomen efter första Perforationen var svaga. Efter reperforation förstärktes symtomen.
Vid registrering sågs en förlängning av nätmagsintervallen omedelbart efter Perforationen och den var tydligt framträdande under tvåitre dygn. Även i spontanfallen var förändringen endast påvisbar i det akuta stadiet.
Det mest framträdande fyndet vid registrering av nätmagsmotoriken hos såväl försökskorna som hos spontanmaterialet var en förlängning av andra nätmagskontraktionsfasen. Förändringen var störst efter två till sju dagar och minskade därefter gradvis på försökskorna, som undersöktes vid upprepade tillfällen.
Korna med reticuloperitonit hade också nedsatt förmåga att flytta över registreringssonden från atrium till reticulum.
References
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Holtenius, P., Jacobsson, S.O. & Jonson, G. Recording of the Reticular Motility in Cattle with Experimental and Spontaneous Traumatic Reticuloperitonitis. Acta Vet Scand 12, 325–334 (1971). https://doi.org/10.1186/BF03547733
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DOI: https://doi.org/10.1186/BF03547733