Contens of Mn, Ni and Mo in poultry nutrion in north Vietnam
2001
Bui Huu Doan
(l) The content of Mn in cereal grains was 70-20 ppm, in fishmeal 105-186 ppm and in soybean and it by products 157-284 ppm. Among cereal grains, Ni was only found in fellow corn in northern mountainous areas (25.4 ppm), Ha Long fish meal (47.7 ppm. extracted soybean cakes (31.25 ppm) In other materials, Ni was in inconsiderable amounts. In the feeds analysed, Mo was only in traces. (2). Compared to the NRC (1994), in the feeds use by the enterprises in the North the content of Mo was times higher for chicks and 2 times higher for laying hens; Ni content was 5-6 times higher. Mo content were 6 times higher for chicks and 23 times higher for laying hens.
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