UNTERSUCHUNGEN ZUR SCHMACKHAFTIGKEIT SCP-HALTIGER DIÄTEN

Abstract

Studies on Palatability of SCP Diets. In short-term two-choice preference tests with adult rats the palatability of a diet containing 30 % SCP (Methylomonas clara, Hoechst AG, Frankfurt) was compared with that of diets containing casein (24 %) as protein source. Two casein diets were used. The palatability of one casein diet had been reduced by addition of 4 % saccharoseoctaacetate = SO). Naive rats preferred the casein diet (without SO) against the SCP-diet and the SCP-diet against the SO-diet. After feeding the SCP-diet for 3 days, the animals ate about the same amount of SCP- and casein-diet in the short-term preference test. An analogous observation was made in rats fed the SO-diet for 3 days. Unlike the naive rats these animals also ate about the same amount of SO- and SCP-diet. In a 2 week feeding trial with adult rats food intake and weight gain did not differ markedly between the animals fed one of the three diets. The results indicate that after a short period of adaptation rats accept relatively unpalatable diets well.