Design, development, and application of a non-surgical deep uterine embryo transfer technique in pigs

Abstract

There is enormous potential for the use of embryo transfer in pig production because it should make it possible to move genetic material (i.e., embryos) with minimal risk of disease transmission, reduced transportation costs, and no effect on animal welfare during transport. Unlike other livestock, the commercial use of embryo transfer in pigs has been very limited because embryo collection and transfer require surgical procedures. Recently, a new and unique procedure for the non-surgical transfer of porcine embryos deep into a uterine horn of non-sedated gilts and sows has been developed. The excellent reproductive performance of recipients following non-surgical transfer of fresh embryos and the promising results obtained with vitrified embryos represent a fundamental advance in the widespread commercial use of embryo transfer by the pig industry.