Using Faecal Near Infrared Reflectance Spectroscopy (F.NIRS) To Measure The Proportion Of Grass In The Diet Selected By Cattle Grazing Tropical Pastures

File Upload: 
Coates, D.B.
Dixon, R.M.
Sullivan, M.
The Australian Rangeland Society
Publication Year: 
A F.NIRS calibration equation was developed for predicting the 13C ratio in faeces, and therefore the proportions of C4 tropical grasses to C3 non-grass plants (primarily forbs, legumes and browses) selected by grazing cattle. This calibration equation was used to measure seasonal profiles of dietary non-grass intake for a NE Qld speargrass site with and without introduced pasture legume, and for a NW Qld Mitchell grass site. In addition, results are presented for cattle grazing savannahs in the monsoonal tropics of central, northern Australia. Non-grass can form a substantial component of the diet even where there is ample grass on offer and may contribute substantially to diet protein content during the dry season.
Conference Name: 
Australian Rangeland Society 14th Biennial Conference
Conference Date: 
Sunday, September 3, 2006
Resource Type: 
Document Type: 
Conference Paper
Non-AGROVOC Keywords: 
Additional Information: 
3 - 7 September, 2006 Renmark, South Australia ISSN 1323 660
Australian Rangeland Society

Includes full-text resources emanating from a complete set of Australian Rangelands Society Proceedings, journal articles from The Rangelands Journal (published by CSIRO Publishing for the Australian Rangelands Society), videos and other resources abou the extensive rangelands of Australia.