Field peas could be introduced without any problem at up to 30% in pelleted feeds for growing rabbits and completely replace soybean meal as the main protein source, despite their lower protein content (Colin et al., 1976; Franck et al., 1978; Seroux, 1984). Peas can replace not only soybean meal but also a part of the cereal grains in the diet. In some experiments, growth performance improved when peas replaced the equivalent proportion of soybean meal + cereal grain (Castellini et al., 1991). When a higher proportions of peas are included in complete feeds, it becomes difficult to maintain the nutritive balance of all nutrients; for example a significant reduction of growth rate was observed in 2 trials out of 3 (-10% on average) when 45% of peas replaced soybean meal + cereal grains (Franck et al., 1978).