Abstract
Three types of feed exclusively for pigs were formulated from co-products using the values derived from the Standard Tables of Food and Feed Composition. From this formulation, co-products, i. e. rice, bread, noodles, rye bran, brewers residue grains, fish, soybean curd, soybean curd residue, and vegetables, were collected in Hiratsuka city, Kanagawa Prefecture with each type of feed produced under a fermentation-dehydration system which took more than 45 days. The total amount of each co-product feed manufactured was more than 900kg. The feed was subjected to chemical analyses and digestion trials using 15 LWD pigs (average BW 47.2kg). The results were then compared to the formulation values. It was shown that the application of values of certain co-products derived from the Standard Tables of Food Composition was effective in formulating feed, in cases where the value was not described in the Standard Tables of Feed Composition. It is necessary to formulate feed under safety factor considerations as the lysine content analyzed was small compared to the formulated lysine content, with a±3 point gap separating the analyzed and formulated nutritive values. Accuracy of formulation was not improved by the application of analyzed values of DM and chemical composition of partially obtained samples, due to sampling errors.
