Abstract
Calcium hydroxide and calcium carbonate contained in the materials of concrete silo wall have a property to neutralize the organic acid of silage. Teis study investigated the effect of this neutralization on chemical quality of high-moisture silage. 1) In the concrete tower silo, the chemical quality of silage near to the silo wall was inferior to that in the center of silo, but in FRP (fiber reinforced plastics) coated silo, such phenomena were not observed. 2) In the plastic silo, the wall of which was smeared with sludge of compost, the chemical quality of silage near to the silo wall was similar to that in the center, and both were not inferior to that of control silo. 3) In the plastic silo (a conserved period of 50-day) which was painted with lime milk on the wall after smearing, silages both from the wall and the central part were of high pH, low lactic acid, and high butyric acid as compared with non-treated silo. 4) It was admitted that the existence of lime constituents on the silo wall may be a factor deteriorating the chemical quality of silage near to the silo wall.
