Digestion of Crude Fiber in the Cecum of Chickens

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  • 鶏盲腸における粗繊維消化について
  • ケイ モウチョウ ニ オケル ソセンイ ショウカ ニ ツイテ ニワトリ ノ モウチョウ キノウ ニ カンスル ケンキュウ 3

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In order to examine the digestive function of the ceca of chickens for crude fiber, experiments were conducted using 4-month-old single comb White Leghorn cockerels, and the following results were obtained: 1) Most of cecal feces were excreted in the morning, especially early in the morning. Moreover, the amount of cecal content increased with time from evening till midnight. 2) The crude fiber content in the lower ileum and the rectum did not reveal any consistent tendency in relation to time, but the crude fiber content in the ceca showed a maximum value at 4.00-8.00 P. M., and thereafter decreased gradually. The ratio of chromic oxide to crude fiber showed almost the same tendency as to the crude fiber content, and both the crude fiber content and the rate were remarkably lower in the cecum than those in the lower ileaum and the rectum. 3) The crude fiber content of the ceca was almost half of that of the lower ileum or the rectum. This fact may indicate that a portion of intestinal ingesta, which is low in fiber content, is selectively introduced into the ceca. 4) The digestibility of crude fiber, cellulose and pentosan was not changed by the ligation of the ceca. These results indicate that the ceca of chickens may not play a significant role in the digestion of crude fiber. (Studies on the function of ceca of chickens. Report 3)

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