ＴＨＥ RELATIONSHIP BETWEEN THE LENGTH OF THE OVIDUCT AND THE SIZE OF THE EGG

概要

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The relationship between the length of each part of the oviduct and the size of the egg was studied using two years old hens of White Leghorn. There was a positive significant correlation between the length of the isthmus of the oviduct and the width of the egg, indicating the increase in width of the egg was corresponded to the increase in length of the isthmus. It seemed to be concluded that the longer width of the egg was due to the milder contraction of the muscle of the isthmus while the egg passed through the isthmus. It was indicated in comparing the result of the length of the isthmus with that of other groups of hens that the egg was heavier in the group of the hen with the longer isthmus. It seemed likely that the difference in width of the egg due to the difference in length of the isthmus was confirmed in the results of the difference in weight of the egg. There was a negative significant correlation between the length of the uterus and the width of the egg. No significant correlation was observed between lengths of any other parts of the oviduct and the egg weight, the egg shape index or the length of the egg.
信州大学農学部の論文
1963-04-25