Weinberg, Z.G., Forage Preserv. and By-Prod. Res. U., Department of Food Science, Volcani Center, Bet Dagan, 50250, Israel

Lactic acid bacteria(LAB) which are included in inoculants for silage, sometimes impart beneficial effects, similar to when fed directly, on cattle performance. LABs might interact with rumen microorganisms in such a way that their activity is enhanced and fibre degradability is improved. Another possibility is that LABs produce bacteriocins in the silage which might inhibit detrimental microorganisms, both in the silage and in the rumen.