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Published online by Cambridge University Press: 24 November 2017
Tannins are phenolic compounds which possess antinutritional properties. Studies to assess the effects of tannins have either used bean cultivars containing differing levels of tannins (Jansman, Huisman and van der Poel, 1989) or tannin extracts (Marquardt, Ward, Campbell and Cransfield, 1977). This experiment evaluated the effect of tannins on the utilization of dietary energy and nitrogen by broiler chicks using two lines of field beans which were isogenic except for tannin content. Chicks were used because of their sensitivity to nutritional changes in the diet.