Earlier Detection of Ruminant Pregnancy
At A Glance
Researchers at Colorado State University have developed a patented sensitive radioimmunoassay (RIA) for bovine and ovine interferon tau (IFNT) to determine pregnancy 14 days earlier than industry standard.
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The current gold standard for determining pregnancy status in cattle is through rectal ultrasound on day 32 of predicted/possible pregnancy. By completing the patented RIA for IFNT on Day 18, accurately determining pregnancy status, it is possible to make re-breeding decisions for non-pregnant cows 14 days earlier – having great economic impact for dairy and beef cattle operations.
- IFNT is only produced by the trophectoderm cells of the ruminant embryo
- Lack of detection of IFNT is key in managing ruminant reproductive cycles
Hansen, Thomas R, et al. “Paracrine and Endocrine Actions of Interferon Tau (IFNT) in: Reproduction Volume 154 Issue 5 (2017).” Reproduction, Bioscientifica Ltd, 16 Apr. 2019, rep.bioscientifica.com/view/journals/rep/154/5/REP-17-0315.xml.
Romero, Jared Jerome. “Endocrine Actions of IFNT during Early Ruminant Pregnancy.” Mountain Scholar Home, Colorado State University. Libraries, 2013, mountainscholar.org/handle/10217/80972.
Last updated: April 2020