1. Abnormal fermentations in continuous cultures of rumen micro-organisms given cobalt-deficient hay or barley as the food substrate;McDonald;Br J Nutr,1986
2. The effect of copper and cobalt supplementation on the digestibility of fibrous feeds in sheep;Zeleňák;Vet Med,1992
3. Bioavailability of cobalt sources for ruminants. 2. Estimation of the relative value of reagent grade and feed grade cobalt sources from tissue cobalt accumulation and vitamin B12 concentrations;Kawashima;Nutr Res,1996
4. Rumen fermentation and nitrogen metabolism as affected by monensin;Short,1978
5. Analytical methods for atomic absorption spectrophotometry,1982