Description of the different weight and age categories that were used by the Agricultural Economical Institute (LEI) to differentiate between species and ages within the small ruminant industry.

Description of the different weight and age categories that were used by the Agricultural Economical Institute (LEI) to differentiate between species and ages within the small ruminant industry.本说明针对农业经济研究所（Agricultural Economical Institute，LEI）在小反刍动物产业中用以区分物种与年龄类别的各类体重及年龄分类标准展开阐述。