half-sib sisters. The gain in generation interval is
large, and compensates for the loss of selection
accuracy that results from replacing a progeny
test by a sib test. The ability to select at a young
age, even among embryos, is the main reason of
the application of MOET in pig breeding. Embryo
transfer is also used to disseminate desirable
genes from superior female animals with
minimum disease risks, as animals do not need to
be transported.