Developmental Differences of the Intestine in Waterfowls and Chickens.

概要

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To survey the characteristics of the intestinal development of the waterfowls and chickers, the weight, length and surface area of different parts of inttestine in Pekin duck, mallard, and broiler and White Leghorn chickens were measured on 6 and 20 weeks of age.In all measurements of the intestinal weight, length and surface area, Pekin duck and broiler chicken showed higher values on either 6 or 20 weeks, which agreed with the higher feed intake and growth rate of the two birds. As comparing the values of 6 and 20 weeks, little difference was found in Pekin duck, mallard and broiler chicken, which indicates that the development of the intestine is earlier in these species. This result also agreed with the fact that these birds grow fast in the earlier stage. The White Leghorn chicken showed small values in all measurements on 6 weeks, but on 20 weeks the values of all measurements increased in large extent. This marked change in the intestinal size may explain the fast increase of the body weight of the White Leghorn chicken between 6 and 20 weeks.The results of the present study suggest that the characteristic of the intestinal development in the birds is closely related to the growth rate rather than to the bird species.
日本家禽学会の論文