[Assessment of the proteins in crill meal and lucerne meal extract]

In a feed test with rats lucerne meal extract and crill meal were used as protein sources in order to test their quality in comparison to casein. On the basis of the applied criteria, feed conversion, protein efficiency ratio productive protein value and efficiency of the gross energy we can conclude that lucerne meal extract alone is unsuitable to cover the protein requirement of growing rats. Lucerne meal extract can be supplied particularly on a higher protein level if casein is given in addition. Crill meal as protein source proves to be superior to casein concerning feed conversion and inferior concerning protein accumulation. In this case, complementary doses of casein did not lead to better results.