The technique involving the transfer of ovum of a donor female into the fallopian tube of a recipient female is called
GIFT
GIFT (gamete intra-fallopian transfer) is a method used in females who cannot produce ova but can provide a suitable environment for fertilisation and further development of the embryo in the oviducts.
In ZIFT (zygote intra-fallopian transfer), the zygote or the early embryo (up to the 8 blastomere stage) is transferred into the fallopian tube of females.
ET (embryo transfer) refers to a step in the process of assisted reproduction in which embryos are placed in the uterus of a female with the intent to establish a pregnancy.
In IUT (intra-uterine transfer), an embryo with more than 8 blastomeres is transferred to the uterus to complete further development of the zygote or embryo.