Study On Substitution Effect Of Soybean Husk For Wheaten Bran With Growth-Finishing Pigs

Soybean capsule, weighed 8% and cubage 10% of soybean, is a sort main product of modern oil manufacture. It is important to develop this kind of resources in feedstuff manufacture. It has been found that the nutritional value of soybean capsules is the same as that of the corn when feeding cows. In recent years, conclusion is drawn which it has determinate effect that appropriate soybean capsule are added into the diet of enceinte sows, and it has no negative effect substitution of soybean husks for wheaten bran in feeding enceinte sows. Nevertheless, no report on the use of soybean husks in feeding growth-finishing pigs. It slows down the use of soybean husks in animal breeding. Based on some previous research, the study has made research on the use of soybean husks in feeding growth-finishing pigs and analyzed its nutritional components and the substitution effect in different season. The study showed:1 The substitution is hardly needed in summer except 4% substitution groups. The other project have no active effect, but the cost was higher than comparison groups. In warm season, the dailygain by substitution of soybean husk for 7% or 4% wheaten bran was the same as that of the comparison groups when feeding growth-finishing pigs weighed about 50kg, while the cost decreased six fen to twelve fen per kilogram.2 In winter, though the daily gain and the proportion of feed to weight was similar to that of comparison groups, the cost decreased twenty-eight fen, eighteen fen, fifteen fen and seven fen in experimented groups 2, 3, 1, and 4. Any project has negative effect in winter. The high cellulose content and low lignin content of the substitute lead to the high digestion coefficient, especially ruminants, as there is no negative effect which corny amylum inhibits rumen to degrade cellulose.In another hand, the substitution in feeding growth-finishing pigs increase the coarse cellulose content in pigs' diet and the increment of fever, making the hot alarm reaction more serious, especially in summer , hence negative effect is brought out.