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  • Title: Method for obtaining bovine zygotes produced in vivo.
    Author: Ellington JE, Farrell PB, Simkin ME, Foote RH.
    Journal: Am J Vet Res; 1990 Nov; 51(11):1708-10. PubMed ID: 2122780.
    Abstract:
    A superovulatory and surgical protocol was developed for recovery of bovine zygotes. Holstein cows and heifers were given follicle-stimulating hormone and cloprostenol to induce superovulation. Surgical cannulation and lavage of the uterine tube was performed 40 to 48 hours after the start of standing estrus. In general, cows had more corpora hemorrhagica than did heifers, but a higher percentage (P less than 0.05) of ova recovered from cows were infertile. Several heifers were subjected to the procedure twice, and embryo recovery rates were equivalent both times.
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