Effect of Body Condition Score (BCS) on In Vivo Embryo Production and Pregnancy Rate Following Superovulation in Hanwoo

A case report of embryo transfer with air-transported fresh bovine embryo produced by multiple ovulation in Hanwoo

“…A donor female cow (Hanwoo; raised at a farm located in Boeun, Chungcheongbuk-do; experienced for 3 parities; body condition score: 2.75; brucellosis free) was multi-ovulated in accordance with the previous articles (Son et al, 2006;Song et al, 2012;Yeom et al, 2013). In brief, when the second follicular wave was initiated with recruitment of the new primary follicles during the luteal phase [presence of mature corpus luteum (CL)] under transrectal ultrasonography (Fig.…”

“…Therefore, the present case report introduced that fresh embryos for MOET could be transported for 6 h including air flight with maintaining their fertility to offspring. Of note, compared with the results from previous articles investigating ET efficiency of MOET in Hanwoo, the fresh embryos shipped via air plane in the present case report exhibited higher pregnancy rate compared with previous articles, indicating normal fertility of fresh embryos even after air flight (71.4% as 5/7 in the present case report vs. 33.3-63.6% in previous articles) (Kim et al, 2004;Son et al, 2006;Yeom et al, 2013).…”