On the Causal Substance to Chick Blindness Occured in Kansai District of Japan
スポンサーリンク
概要
- 論文の詳細を見る
Since August in 1966, many blind chicks have been observed collectly in several areas of Kansai District in Japan. This study was conducted to establish the causal factor to chick blindness through five feeding experiments.Principal results obtained were as follows;1) Chick blindnss could be occured experimentally by the feeding with chick ration which was given to blind chicks in field condition. This result suggested that the cause of blindness should be exist in the ration given to chicks.2) Chich blindness occured experimentally by the supplement of fish meal which was mixed to the ration caused to the chick blindness in field condition. This fish meal contained the many white particles involved high level of nitrogen.3) As we could get a high nitrogen substance (M) that was considered to be mixed by a fish meal maker in order to elevate the nitrogen content of fish meal, the effects of M supplement to the chick ration were examined. Above 1.5% of M supplement to the ration resulted the occurance of blindness. Percent of chicks in blindness was provoked as to increase the level of M supplement, and all chicks were blind when 10% of M added to the ration.4) By the difference of specific gravity, M substance was divided into five portions (A, B, C, D, E). According to the microscopic observation, A, C and E consisted of relatively pure and homozygous substance respectively while B and D contained several different substances. Supplements of A, C and E to chick ration resulted experimentally that only C provokd the occurance of blindness. From the results of studies of infrared spectrum and column spectrography, it was suggested that major constituent of C portion might be ammeline.5) The experimental results of supplements of ammeline and other several cyanide compounds to chick ration showed that only ammeline provoked the occurance of blindness. The clinical symptoms and gross finding of retina of blind chicks suffered by ammeline supplement were almost same with those of the ones observed in field condition.6) From the above results, it was concluded that chick blindness occured in Kansal District since 1966 might be caused by the feeding of ration mixed with with the fish meal which included ammeline.
- 日本家禽学会の論文
日本家禽学会 | 論文
- ニワトリ MHC クラスIcDNA プローブを用いたニホンウズラゲノミック DNA の ECL 法による RFLP 分析
- 各種家禽の赤血球中のカルノシンおよびアンセリンの検出〔英文〕
- 鶏の加齢と血液中の遊離アミノ酸および低分子ペプチド組成との関係
- ニワトリヒナのファブリシウス嚢におけるグルココルチコイド誘導性のアポトーシスに関する免疫組織化学的検討
- 鶏の体脂肪蓄積に及ぼす分離大豆タンパク質及びカゼインの影響