受胎牛と不受胎牛の子宮頸管粘液,および卵巣所見と血中性ステロイド値の関係

概要

論文の詳細を見る
Cervical mucus and blood samples of cows were collected and rectal palpation was done on day 0, 10, 20, 21, 22, 30 and 40 after breeding. From a total of 29 estrous cycles in fifteen cows, nine returned to estrus 1 to 3 times. Three returned to estrus in 17 days, 13 in 19 to 26 days and 6 in 41 to 77 days, while 7 became pregnant. The condition of the uterine and cervical mucus of cows was determined by cervical score. Crystallization patterns of cervical mucus were classified into 6 types, pH of cervical mucus was determined with pH test strip and serum concentrations were measured by radioimmunoassay. Results obtained were summarized as follows : 1. The uterine-cervical score and crystallization patterns of cervical mucus decreased and the pH of cervical mucus varied from slightly acid to neutral in fertile cows. Increased score and extent of crystallization patterns were observed in infertile cows, but pH varied greatly from acid to neutral. 2. E : P and F : P ratio decreased while E : F ratio was stable in fertile cows. 3. Variation of score, crystallization patterns and pH were related to the ratio of serum steroids. Increased crystallization patterns were highly reflected in the E : P ratio. 4. Fertile and infertile cows can be identified by the correlations obtained among the scores of uterine and cervical conditions, crystallization patterns, pH of cervical mucus and also the serum steroids ratio.
帯広畜産大学の論文
1977-11-25