Influence of ash on the fiber composition of dried dairy manures

摘要

The objective of this work was to examine the role of ash in the compositional analysis of dried dairy manures. Ninety-nine dairy manures obtained from Connecticut, Maryland, New York. Pennsylvania and Virginia were dried at 60 deg. C, and ground to 20 mesh. Samples were analyzed for neutral and acid detergent fiber, acid detergent lignin, total carbon, total nitrogen, and ash In addition Cellulose and hemicellulose were computed by difference. Results indicated that high ash contents (8-52/100 of dry matter0 can dra- Matically and unpredictably alter various measures of fiber composition and are a significant source of error in the determination of Manure composition and how it relates to mineralization or other compositional influenced factors.