This work was carried out with the objective of evaluating the effect of the bovine digestion process on the germination capacity of the capim-annoni-2 (Eragrostisplana Ness) seeds recovered in feces. The seeds (6 g, 27,273 seeds) were placed in a ruminal ventral sack of eight fistulated steers kept in pen trial. Forthy-three percent of the offered seeds were recovered in the feces. Seeds recovered in the first three days corresponded to 97.2% of the offered seeds. Only 7.2% of the recovered seeds germinated and represented 3.1% of the offered seeds. The permanence time in the digestive trait was the main cause for the disappearance of consumed seeds and for the loss in their germination capacity. The absence of capim-annoni-2 seeds in the feces occurs in the eighth day after ingestion, then, bovines should be kept in quarantine for seven days in an area free of capim-annoni-2 seeds to clean their digestive trait.
biological invasion; natural grassland; seed ingestion; seed transport; weed dispersion
