Early pregnancy diagnosis in cattle

摘要: Progesterone concentrations in peripheral plasma and milk were determined by competitive protein-binding assay each day throughout the oestrous cycle of heifers a dairy cow also animals after insemination. The accuracy detecting forecasting pregnancy non-pregnancy was assessed studies involving blood-sampling on 20th 23rd artificial insemination, sampling cows 21st 24th mating. high degree obtained using this procedure for an early diagnosis would be particularly useful herds involved controlled breeding programme.