title: Nonsurgical embryo collection from sows with surgically shortened uteri.
abstract: To allow for the nonsurgical collection of swine embryos, the uteri of sows (n=7) were surgically shortened. A section of each uterine horn was resected to facilitate a transcervical flushing procedure. All sows with a shortened uterus exhibited natural estrus at least once after the operation. Four to six days after insemination, embryos were collected with a two-way Foley catheter. Embryos were collected (n=55, 6.3+/-6.0: x +/-SD ) from every treated sow. Although treated sows often did not exhibit estrus beyond 1 to 9 natural estruses, those sows (n=27) with persistent corpora lutea (CL) over a 4 to 5 wk period were given prostaglandin F(2alpha) (PGF(2alpha)) and they returned to estrus in 5.2+/-1.1 d: x +/-SD .
authors.affiliation: Research Laboratory, C. Itoh Feed Mills Co., Ltd. 919 Aoki, Kuroiso, Tochigi, 325-01, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kobayashi
authors.forename: S
authors.initials: S
authors.lastname: Hayashi
authors.forename: Y
authors.initials: Y
authors.lastname: Ohtubo
authors.forename: A
authors.initials: A
authors.lastname: Honda
authors.forename: J
authors.initials: J
authors.lastname: Mizuno
authors.forename: S
authors.initials: S
authors.lastname: Hirano