飼料作物 중 亞窒酸鹽과 窒酸鹽의 蓄積

Nitrite and nitrate accumulation of pasture plants

Nitrite and nitrate nitrogen contents of total 27 samples of Pasture plants and roughages fed to cattle were analyzed to investigate the responsiblity for the unidentified causes of the sudden death of Korean cattle in mostly rural areas. In samples of produce analysed almost of all were very low in nitrite nitrogen contents but maize, sorghum and rice straw had comparatively high levels in the range 10.11 to 28.27ppm, while nitrate nitrogen contents were high levels in the range 32.82 to 586.76ppm on dry matter basis in general. Especially maize and rice straw which are main rough feeds for cattle in Korea had very higher contents of nitrate-nitrogen of about 580ppm on dry matter basis than those of other plants tested.