Nutritive Value of Various Energy Sources for Poultry Feed

Abstract

Soybean foots and rice foots are byproduct of the refining of oils for food use, which have been used for feed as dark oil after hydrolysis of sodium salts of fatty acids by sulfuric acid. The purpose of the experiments reported in this paper is to use alkaline foots themselves directly as energy source for poultry.Availability of energy in both of soybean foots and rice foots, i. e. percentage of available energy in gross energy, estimated by bioassay procedure with 180 starting chicks for 4 weeks was excellent, being 94 and 99%, respectively. No chicks died and no abnormality was observed among the chicks fed the foots.Nitrogen-corrected metabolizable energy of both of the foots estimated by analyses of feed and excreta was also excellent at the dietary level of foots dry matter of 3.8 and 3.0%, respectively, though metabolizable energy decreased gradually and excreta became loose with the increase in dietary foots levels.It was concluded that alkaline foots themselves, having high calorie of 7-9kcal/g of dry matter, are excellent energy source for poultry, if their dietary level be kept lower than 3-4%.