Development of Techniques for Animal Feed from Corn and Their By-Products

摘要

Research results concerned(1) quantification of p H value and contents of ammonia nitrogen,volatile fatty acids( VFAs),and lactic acid,which were indicators of fermentative quality of corn stover silage and other crop by-product silages;(2) introduction of methods for analyses of fiber content in feeds such as detergent and enzymatic analyses;(3) determination of digestive characteristics in the rumen by artificial digestion trials( in vitro and in situ);(4) evaluation of meat productivity and quality by feeding corn stover silage to beef cattle in feeding experiments and;(5) preparation of feed composition and feeding standards for animals in Jilin Province. These results and methods substantially contributed to stabilization of feed supply as well as an increase in the efficiency of meat production,resulting in sustainable development of livestock management in China.