EXTENT OF CELLULOSE DIGESTION IN NATIVE FORAGES BY FIBROBACTER SUCCINOGENES, ISOLATED FROM THE RUMEN OF GOATS BIOTYPE CRIOLLO

GRILLI, D.; PAEZ LAMA, S.; EGEA, V.; CERON, M; COBOS, E.; ALLEGRETTI, L.; ARENAS, N.

Mendoza

Jornada; XXVIII Annual Scientific Meeting of Cuyo Biology Society; 2010

Cuyo Biology Society

Fibrobacter succinogenes is a major cellulolytic bacterium in the rumen of cattle and sheep. The assignation of the role of the bacterial strain in its natural environment depends on the substrate that it can digest. The aim of this study was to determine in vitro digestibility of the cellulose in the alfalfa and six native forage for one strain of F succinogenes. The same was isolated from goats biotype Criollo grazing native pasture in the northeast of the province of Mendoza and was identified by PCR. The substrates evaluated were Medicago sativa, Prosopis flexuosa Capparis atamisquea, Geoffroea decorticans, Mimosa ephedroides, Tricomaria usillo and Atriplex lampa. The percentages of in vitro digestibility of the cellulose in these forages were 19.10 ± 4.72, 19.48 ± 1.71, 36.76 ± 7.28, 31.22 ± 4.22, 29.49 ± 9.26, 38.23 ± 0.65 y 50.36 ± 4.49%, respectively. The correlation coefficient (R= 0.79, p