On the entering and stay of the intestinal contents in the caeca of the domestic fowl.
1992
Nagano K. | Fujita S.
In the caeca of the adult fowls, in order to clarify the process of caecal digestion, both the entering-time and the stay-time of the initial contents in the caeca were analyzed chemically. In these researching works, the used food-indicator was chronic oxide (Cr2 03). In the completely combined forage, chronic oxide (Cr2 O3), whose concentration being 0.3 %, was mixed uniformly. As to the organ-division, the whole digestive tracts were divided into the following 8 portions: such as crop, proventriculus plus ventrichlus, duodenum, oral small intestine, anal small intestine, caeca, colonic rectum and cloaca. In pursue of the entering-and the stay-times, the contents in the digestive tracts were analyzed soon after the operation. The results obtained are summarized as follows: 1. The time necessary to enter in to the caeca was fixed to be 2-3 hours after feeding. 2. The time needed for the disappearance of chronic oxide out of the caeca was noted to be 24-48 hours after feeding. 3. In the cloaca, the existence of Cr2 O3 was noted until 2-2.5 hours after feeding, these are equivalent to the shortest time needed for the given feed to pass through the whole digestive tracts. 4. 12 hours after feeding, the existence of Cr2 O3 was noted at the whole digestive tracts, excepting the caeca.
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