1AIPLE K I, STEIGNASS H, MENKE K H. Suitability of a buffered faecal suspension as the inoculums in the Hohenheim gas test. 1, modification of method and its ability in the prediction of the organic matter digestibility and metabolizable energy content of ruminantfeeds compared with rumen fluid as inoculums[ J ]. J Anita Physiol Anim Nutr, 1992, 67:57-66.
2KRINAMOORTHY U, SOLLER H, STEINGASS H, et al. Energy. and protein evaluation of tropical feedstuffs for whole tract and rumi- nal digestion by chemical analyses and rumen inoculums studies in vitro[ J]. Anim Feed Sci Tech, 1995, 52 : 177 - 188.
3MAURICIO R, OWEN E, MOULD F L, et al. Comparison of bo- vine rumen liquor and bovine faeces as inoculums for an in vitro gas production technique for evaluating forages [ J ]. Anim Feed Sci Tech, 2001, 89:33-48.
4GETACHEW G, CROVETTO G M, FONDEVILA M, et al. Labo- ratory variation of 24 h in vitro gas production and estimated metabo- lizable energy values of ruminant feeds [ J ]. Anita Feed Sci Tech, 2002, 102: 169-180.
5AOAC. Official methods of analysis [ M ]. 14th ed. Washington D. C. :USA Association of Official Agricultural Chemist, 1984.
6RUSELL J B, MARTIN S A. Effect of various methane inhibitors on the fermentation of amino acids by mixed rumen microorganisms in vitm[J~. J Anim Sci, 1984, 59:1329 -1338.
7ORSKOV E R, MCDONALD I. The estimation of protein degrad- ability in the rumen from incubation measurements weighted accord- ing to rate of passage[ J]. J Agri Sci, 1979, 92:499 -503.
8McNIVEN M A, PRESTLOKKEN E, MYDLAND L T, et al. Labo- ratory procedure to determine protein digestibility of heat - treated feedstuffs for dairy cattle[J]. Anita Feed Sci Tech, 2002, 96:1 - 13.
9SEKER E. The determination of the energy values of some ruminant feeds by using digestibility trial and gas test [ J ]. Rev Med Vet, 2002, 153 : 323 -328.
10CROS P, VERNAY M, BAYOURTHE C, et al. Influence of extru- sion on ruminal and intestinal disappearance of amino acids in whole horse bean[J]. Can J Anim Sei, 1992, 72:359 -366.