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A Method for Recording the Motor Activity of the Reticulum in Cattle
Metod för registrering av nätmagsmotoriken hos nötkreatur
Acta Veterinaria Scandinavica volume 12, pages 313–324 (1971)
Abstract
A method for recording the motility of the reticulum in normal cattle has been devised. The method is based on measurement of the pressure variations occurring in connection with the reticular contractions. The pressure is transferred through open, water-filled catheters via a pressure transducer to an electromanometer, from which it is recorded with the aid of a mingograf.
Mean values for the interval, duration and amplitude of the reticular contractions in 10 normal cows are given.
The method permits recording in intact animals without any preliminary measures, and can therefore be used in clinical cases.
Sammanfattning
En metod för registrering av nätmagsmotoriken hos nötkreatur har utarbetats. Metoden grundar sig på registrering av tryckvariationerna i samband med nätmagskontraktionerna. Trycket överfördes genom öppna vattenfyllda katetrar via en tryckgivare till en elektromanometer, från vilken det registrerades med en mingograf (Mingograf 81, Elema-Schönander).
Nätmagskontraktionernas intervall var 50,8 ± 7,4 sek., durationen av 1: a kontraktionen 3,0 ± 0,2 sek., durationen av 2: a kontraktionen 2,9 ± 0,2 sek., amplituden av l:a kontraktionen 14,8 ± 3,8 mm Hg och amplituden av 2:a kontraktionen 23,3 ± 11,6 mm Hg \(\left( {{\rm{\bar x}} \pm {\rm{s}}} \right)\).
Med den utarbetade metodiken kan registrering ske på intakta djur utan någon förbehandling.
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Holtenius, P., Jacobsson, S.O. & Jonson, G. A Method for Recording the Motor Activity of the Reticulum in Cattle. Acta Vet Scand 12, 313–324 (1971). https://doi.org/10.1186/BF03547732
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DOI: https://doi.org/10.1186/BF03547732