[Early pregnancy diagnosis by the ultrasonographical device and observation of fatal growth in XXXX ( @entity5434 )].

@entity8597 @entity5434
Usefulness of the ultrasonographical device (USD) for early diagnosis of pregnancy and for observation of fetal growth was examined in the @entity5434 ( @entity5434 ). Firstly, 50 females, each of which was mated for 24 hours in an individual cage, were used. They were diagnosed for pregnancy by the use of USD 15 to 29 days and 35 days after mating. Then, 20 of them were judged to be pregnant. The early pregnancy diagnosis was based on the detection of @entity8597 ( @entity8597 ) in the uterus. The @entity8597 was detected 20.0 +/- 1.8 days after mating. The duration from the day on which @entity8597 was first detected to the day on which the heart beat of embryo (HBE) was detected averaged 5.6 +/- 1.5 days. In 17 of these 20 pregnancies, @entity8597 was detected 17 to 23 days after mating. As regards the remaining three pregnant cases, @entity8597 and HBE were simultaneously detected on the 28th day of pregnancy in two cases, and on the 35th day in one case. Secondly, 225 females who were mated by the routine 3 day-mating system were used. Pregnancy diagnosis by USD was conducted on the 21st, 28th and 35th day after mating. Ninety-six of the 225 females were judged to be pregnant. In 33 (34.1%) of the 96 pregnant cases, @entity8597 was detected on the 21st day of pregnancy. In 57 females (59.4%), @entity8597 was detected on the 35th day. Furthermore, it was able to judge conditions of fetal growth by measuring the size of @entity8597 and biparietal diameter.(ABSTRACT TRUNCATED AT 250 WORDS)
