Biotechnology and the improvement of silage (tropical and temperate) rumen digestion: a mini-review.

As with forage diets in general, ensiled tropical residue feeds and temperate grass and legume herbage tend to have lower fibre digestibility, ruminal biomass production and feed bypass, resulting in limited protein nutrition and intake in the animal. Various modified (recombinant and mutated) microbial inculants might be used mainly to: (1) boost lactic acid production in temperate silage to stabilize against further clostridial protein breakdown during the ensiling process and effect silage fibre (lignin, cellulose, and hemicellulose) digestion to increase digestibility and (2) increase microbial digestion of fibre along with boosting microbial protein synthesis to increase microbial biomass production in the rumen.