PMID: 602011Jan 1, 1977Paper

Radiotelemetric method of studying ruminal movements in cows

Veterinarno-meditsinski nauki
I Kostov, N Bodurov

Abstract

A description is given of a monochannel radiotelemetric system primarily designed to study the motility of the rumen but also adapted for use in studying the bioelectric activity of the heart, uterus, and other viscera. The system consists of an emitting part and a receiving-registering part. The former is composed of an emitting part and a receiving-registering part. The former is composed of a transformer (drawbar-sensing mechanism), an amplifier of biopotentials, a generator, and an ultra-short-wave transmitter. The registering mechanism consists of a receiver, a decoder, and a writing device. The apparatus provides a stable transmission of physiologic information at a distance of up to 500 meters. Presented are graphic recordings of the motility of the dorsal sac of the rumen of clinically normal cows supplied with chronic fistulae of the rumen as well as of cows having no fistulae, in a varying physiologic status.

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