As. Vaage et Lp. Milligan, AN ELECTRONIC DEVICE TO MEASURE THE SIZE AND DEGREE OF PACKING OF THERUMEN MAT IN CATTLE, Canadian journal of animal science, 73(3), 1993, pp. 655-660
An electronic device and method for determining the size and degree of
packing of the rumen mat in ruminants are described. The mat meter ou
tputs to a chart recorder the distance travelled and the time elapsed
for a small weight to ascend through the rumen contents under the cons
tant force of an external weight, From the chart recordings, the rate
of ascent (min 100 cm-1) of the weight can be calculated as an index o
f the degree of packing of the rumen mat in selected strata of the rum
en contents.