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《Journal of Heilongjiang August First Land Reclamation University》 1985-02
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THE METHOD OF RATION FORMULATION FOR ANIMALS AND FOWLS BY CALCULATING CHART

Guo Qing-yu  
The characteristics of this method: According to the relevant numerical value, afforded in 《Nutrient requerement of animals and fowls》and 《Table of composition of a feed and nutriton value》,Two kinds of relative line-form figure are drawn up by the method introduced in the present article. After that, a calculating chart of ration formulation in which there are checks like standard coordinate paper, is made up with pieces of transparent plastic, and we start to compound ration for animals and fowls following some simple vules, The error calculated is about 1%, The method may he adopted to animal husbandry workers in farms or stock farms.
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