Freire et al., 1980. Proc. Austr. Soc. Anim. Prod., 13: 225-228 Document reference Freire, L. C. L.; Boniface, A. N.; Murray, R. M., 1980. Digestion of high fibre roughage in the rumen of sheep. Proc. Austr. Soc. Anim. Prod., 13: 225-228Web http://www.asap.asn.au/livestocklibrary/1980/Freire80.PDFCitation key Freire et al., 1980Datasheets Spear grass (Heteropogon contortus)