飼料加工에 對한 衛生學的 硏究

A study on the feed hygiene in Korea - mycological observation of corn feeds -

A study was carried out on the isolation of fungi flora from the corn feed in Korea, which were important not only in the Feed technical Science and Veterinary Science but also in animal and human health. It hoped that the information will be used for reference in future endeavors of study in the field of feed science and technology. The obtained are summerized as follows: 1. Ninety strains of fungi isolated were classified on a accordance with key(Barron’s generic key of Hypomycetes, Ainsworth’s classification of the fungi and Raper and Fennell’s Group or species key of Aspergillus): 10 strains (11.1%) were Phycomycetes, 60 strains(66.6%) were Ascomycetes and 20 strains (223.3%) were Fungi imperfecti(Deuteromycetes). The genus of fungi isolated from corn feed were Abisidia(1.1%), Rhizopus (10.0%), Aspergillus (51.1%), Penicillium (15.5%), Candidia (6.7%), Trichosporon (6.7%), Geotrichum (1.1%) Fusarium (6.7%) and Wallemia (1.1%). It was found that Aspergillus and Penicillium group were more dominant over other groups. 2. Forty-six strains of Aspergillius obtained were subdivided into 9 stains of A. flavus, which formed 19.6% of total isotateds 6 strains or 13.0% of A. terrus and A. chevalieri, 5 strains or 10.9% of A. fumigatus and A. cnadidus, 4 strains or 8.7% of A. niger, strains or 4.3% of A. flavus var. columnaris, A. oryzae and A. repens, and one strain or 2.2% of A. clavatus, A. versicolor, A. sydowi, A. janus and A. sulphureus, repectively. 3. The fungi isolates varied according to condition of corn feeds. a) In the case of contamination of fungi in imported corn was more than that in native corn. b) Tn the case of contamination of fungi in corn storage of Sac form was higer than that of Bulk form. c) In the case of isolated rate of fungi in corn by feed processing course of Simple system was more than that of Complex system.