Publication Date
1989
Location
Nice France
Description
Herbage intake is one of the critical factors in understanding why livestock perform at various levels on different forages, however acceptable methods of measuring voluntary intake of free-roaming livestock are still lacking. Commonly used indirect measurement methods estimate pasture herbage loss or animal gain, fecal output and digestibility equations, grazing behavior calculations or indicators (Greenlaugh, 1982). More direct attempts of measuring intake include the Animal Weight Telemetry System (AWATS) of Horn and Miller (1979), multiple impedance plethysmography (Stuth et al., 1981) and the conductivity transducing cannula (CTC: Forwood et al., 1985). With new technology becoming available in smaller, more affordable packages, researchers are constantly challenged to adapt and apply available instrumentation to their field of research. The Thermal Conductivity Cannula (TCC) and Telemetric Grazing Clock (TGC) are two examples of attempts to improve intake measurement of freeroaming grazers by application of advanced technology.
Citation
Forwood, J R. and Hulse, M M., "Electronic Measurement of Grazing Time and Intake in Free Roaming Livestock" (1989). IGC Proceedings (1985-2023). 22.
(URL: https://uknowledge.uky.edu/igc/1989/session7/22)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Electronic Measurement of Grazing Time and Intake in Free Roaming Livestock
Nice France
Herbage intake is one of the critical factors in understanding why livestock perform at various levels on different forages, however acceptable methods of measuring voluntary intake of free-roaming livestock are still lacking. Commonly used indirect measurement methods estimate pasture herbage loss or animal gain, fecal output and digestibility equations, grazing behavior calculations or indicators (Greenlaugh, 1982). More direct attempts of measuring intake include the Animal Weight Telemetry System (AWATS) of Horn and Miller (1979), multiple impedance plethysmography (Stuth et al., 1981) and the conductivity transducing cannula (CTC: Forwood et al., 1985). With new technology becoming available in smaller, more affordable packages, researchers are constantly challenged to adapt and apply available instrumentation to their field of research. The Thermal Conductivity Cannula (TCC) and Telemetric Grazing Clock (TGC) are two examples of attempts to improve intake measurement of freeroaming grazers by application of advanced technology.
