1. Effects of supplementation of a grass silage and barley diet with urea, rapeseed meal and heat-moisture-treated rapeseed cake on omasal digesta flow and milk production in lactating dairy cows;Ahvenjärvi;Acta Agric. Scand. Anim. Sci.,1999
2. Determination of reticulo-rumen and whole-stomach digestion in lactating cows by omasal canal or duodenal sampling;Ahvenjärvi;Br. J. Nutr.,2000
3. Nitrogen metabolism of ruminal micro-organisms;Allison,1970
4. Effects of amino acids and peptides on rumen microbial yields;Argyle;J. Dairy Sci.,1989
5. Official Methods of Analysis,1980