TY - JOUR AU - Stephenson, Thomas R. AU - Testa, J. Ward AU - Adams, Gregg P. AU - Sasser, R. Garth AU - Schwartz, Charles C. AU - Hundertmark, Kris J. PY - 1995/01/01 Y2 - 2024/03/28 TI - DIAGNOSIS OF PREGNANCY AND TWINNING IN MOOSE BY ULTRASONOGRAPHY AND SERUM ASSAY JF - Alces: A Journal Devoted to the Biology and Management of Moose JA - Alces VL - 31 IS - SE - Articles DO - UR - https://www.alcesjournal.org/index.php/alces/article/view/897 SP - 167-172 AB - <p>We evaluated transrectal ultrasonography and serum assay for detecting pregnancy in captive and wild moose (<em>Alces alces</em>). Ultrasonographic determination of twinning appeared most feasible during days 30-80 of gestation (4 November - 24 December). During December, January, and March, pregnancy, but not winning, was reliably detected ultrasonographically; diagnosis was confirmed by the presence of a fetus or placentomes. In addition, serum was assayed for pregnancy-specific protein B (PSPB). During December, January, and March, both techniques were 100% accurate in diagnosing pregnancy. However, accuracy of diagnosis during November was 95% and 90% by ultrasound and PSPB assay, based on our assumption that false positives did not occur with ultrasonography. Detection of the presence of a conceptus in utero eliminates calf detection biases associated with post-partum assessment of moose population productivity.</p> ER -