エストロジェン投与雛の血清ビテリン産生能と血中酵素活性との関係について

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タイトル別名
  • Examinations of Relationships among the Serum Vitellin Producibility and Activities of a few Blood Enzymes in Estrogen Treated Chickens
  • エストロジェン トウヨ ヒナ ノ ケッセイ ビデリン サンセイノウ ト ケッチ

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抄録

It is said that hormones play important roles in the ovulation of domestic fowl: especially, the activity of estrogen which synthesizes vitellin elements in liver. In the present experiment, the effects of successive administrations of estrogen were studied about the trend of plasma Alp. activities. And we could meet with good results in relationships between the plasma Alp. activity and serum vitellin producibility. Materials for this experiment were obtained from Niigata-ken Poultry Breeding Station. Total 137 of sixty days old White Leghorn pullets of four different strains Rapp, Forsgate, Thornber and Carber, were used. They were administered with estrogen in 10 successive days from 60 days of age. The plasma Alp. activity was calculated by the quantitative analysis on the nitro phenol unit. The observation of the serum vitellin producibility was carried out in the same way as previous reported. Zymograms obtained by horizontal poly acrylamide gel electrophoresis displayed 2 types of plasma Alp. isozymes and 3 types of plasma Es. isozymes. (1) The plasma Alp. activity in estrogen treated region indicated the lower level than in non-treated region throughout the period. And there were recognized decreasing tendencies without the rough range of active fluctuation. (2) The quadratic regression curves significantly resulted from the statistical analysis of plasma Alp. activities about estrogen treated pullets. (3) The activity of "G" strain evidently gave the lowest degree within 4 strains of plasma Alp. activities. (4) Most of the pullets reached maximum in the short period of time after the biginning of estrogen treatment and they showed high levels of the serum vitellin producibility. The investigations indicate significant correlations between both traits. Consequently, these results seemed to suggest that ealier the value of plasma Alp. activity reached its peak, higher the serum vitellin producibility increased. (5) The group of F type classified by plasma Alp. isozymes showed significantly higher level of plasma Alp, activity than that of S type. And the value of b or b' of F type group was in higher level. (6) The view of the characteristics of "G" strain presented much lower level on the serum vitellin producibility as well as plasma Alp. activity. (7) There were few individuals of S type group classified by plasma Es. isozymes, but most of them showed high values in plasma Alp. activity and the serum vitellin producibility.

収録刊行物

  • 日本畜産学会報

    日本畜産学会報 48 (12), 707-714, 1977

    公益社団法人 日本畜産学会

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