Title: Diagnosis of early pregnancy by ultrasound in Macaca fascicularis.
Authors: Conrad, S H; Sackett, G P; Burbacher, T M
Published In J Med Primatol, (1989)
Abstract: Real-time ultrasonography was used to detect early pregnancy in 32 longtailed macaques (Macaca fascicularis). In 92% of the successful conceptions, a correct diagnosis was made. The earliest sign of pregnancy was an intrauterine ringlike structure (11 days). A "line swelling" (14 days) preceded definite fetal echoes (21 days), and fetal heart motion (30 days) proved fetal viability. Ultrasound is a rapid, noninvasive, and relatively cost-effective method of diagnosing and monitoring early pregnancy in M. fascicularis.
PubMed ID: 2654401
MeSH Terms: Animals; Female; Fetal Heart/physiology; Fetus/anatomy & histology; Macaca fascicularis/physiology*; Macaca/physiology*; Pregnancy; Pregnancy Tests/veterinary*; Pregnancy, Animal*; Ultrasonography/veterinary*; Uterus/anatomy & histology