Establishment And Application Of Progesterone RIA In Dairy Cows

Progesterone contents have important meaning to early phase of the milk cow gravidity diagnose , progesterone contents admeasurements method is more, if the enzyme unites immune admeasurement law , latex agglutination experiment law etc., but they there exist defects such as operation or sensibility in middle in giving birth to a child. And study progesterone contents have carried out an admeasurement in using radiation immunity to determine law to the sample of milk originally, the gravidity having been in progress verifies , gets satisfied effect。This research has studied in the breast, the blood as well as the excrement with the emission immunity measuring method the progesterone content, and the description publishes its change tendency chart, its result is as follows:1. blood samples the progesterone change is: From breeding after breeding 6th days, the progesterone content rises at the same day from 0.33ng/ml 2.67ng/ml; After breeding from 12th days to 18th days, the progesterone content rise 8.90ng/ml from 7.67ng/ml; After breeding from 24th days to 30th days, the progesterone content rise 13.70ng/ml from 11.30ng/ml;2. young types the progesterone change is: From breeding at the same day in the young type the progesterone content is 0.45ng/ml, after breeding 6th days, 12 days, 18 days, 24 days, 30 days, rises separately to 3.67 ng/ml, 6.76 ng/ml, 8.42 ng/ml, 11.1 ng/ml and 11.7 ng/ml.3. excrement types the progesterone change is: From breeding after breeding 6th days, the progesterone content rises at the same day from 113ng/mg 156ng/mg; After breeding from 12th days to 18th days, the...