家畜の姙娠生理に関する血液学的研究 Ⅱ．山羊の姙娠に伴う血液中の各種非蛋白窒素, 特にアミノ酸窒素の消長について
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Experiments were performed to investigate changes on the concentration of amino acid nitrogen in the blood of goats during pregnancy. The goats examined were 3 Saanen hybrids (one of them aborted on the 84th day of pregnancy), and the blood samples were collected from them by jugular vein at intervals of 5 days from the 5th day of pregnancy to 45th day after delivery ; the duration extended over 200 days. After these blood samples were deproteinized, the concentration of amino acid nitrogen in these filtrates was determined by the colorimetory described by Folin. The results obtained were as follows : 1) The concentration of amino acid nitrogen in the blood began to increase day after day from the 80-90th day of pregnancy with constant tendency and it showed the highest value on the day just before or after delivery. Thereafter, the concentration of it decreased gradually and it recovered to normal value on the 20-30th day of delivery. 2) In the aborted goat, there was no significant difference in the concentration of amino acid nitrogen in the blood throughout whole periods of the experiments (duration of 200 days after copulation). 3) It seems probable, so far as the experiments concerns, that the concentration of amino acid nitrogen in the blood is not influenced by season, milk production, composition and quantity of diets fed as well as other various factors. 4) From these evidences, the writer believes that the increase of amino acid nitrogen in the blood during pregnancy is the physiological phenomena based on the acceleration of metabolism in the last part of pregnancy.
- 奈良学芸大学の論文
- 1955-12-25
奈良学芸大学 | 論文
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