Pregnancy Diagnosis in Beef Cattle скачать в хорошем качестве

Pregnancy Diagnosis in Beef Cattle

Host: Joanna Coles, Warren County Extension Agent for Agriculture & Natural Resources Guest: Dr. Les Anderson, Extension Beef Specialist Topic: Pregnancy Diagnosis in Beef Cattle The three most common methods for pregnancy examinations are transrectal palpation, transrectal ultrasonography, and blood pregnancy tests (table 3). When performed properly, all three methods are safe for the cow and the fetus. However, regardless of the method used to detect pregnancy status, a small proportion (approximately 5 percent) of cows diagnosed pregnant prior to 60 days of gestation will experience early fetal death, so keep that in mind when determining the best time to conduct pregnancy examinations. These early fetal losses are not a result of the pregnancy examination itself but are miscarriages that occur naturally. Transrectal palpation is by far the most common method of pregnancy diagnosis in beef cattle and is a safe and accurate option for an annual beef cow pregnancy examination. Transrectal ultrasonography allows for pregnancy diagnosis as early as 25 to 28 days after breeding. Most blood tests for pregnancy detection in beef cattle involve detection of pregnancy-associated proteins in the bloodstream of a pregnant cow or heifer. For more information, contact your local agriculture extension agent. Caption Source: www.aces.edu/wp-content/uploads/2019/05/ANR-1417_BeefCowPregnancyExam_031618.pdf