Multiple Ovulation Embryo Transfer In Cattle
The cow is inseminated and embryos are then flushed from the cow s uterus the following week.
Multiple ovulation embryo transfer in cattle. Main advantages embryo transfer. Currently there are two methods utilized commercially for embryo production in cattle et programs. The recovery of embryos includes the induction of multiple ovulation by hormonal treatment. The potential for reproduction in cattle is enormous each female calf is born with an estimated 150 000 eggs.
The principal benefit of embryo transfer et is the possibility to produce several offspring from a female just as artificial insemination produces many offspring from the same male. In current moet protocols donor females are superovulated through treatment with follicle stimulating hormone fsh in order to stimulate the release of multiple oocytes at the time of ovulation. It involves a 5 week superovulation program resulting in several eggs being released from the donor cow as opposed to one during a natural heat. Increase in the number of offspring per female.
At the onset of estrus or heat cycle under the influence of follicular stimulating hormone only one ovum is mature as such the cow gives one calf. Multiple ovulation and embryo transfer in cattle form high milk producing cow in a lifetime calving get 5 or 6 calves. Multiple embryo transfer met in cattle allows for the detection of endometrial responses in scenarios where single embryo transfer would not. It is the traditional method of embryo production and is practised in cattle.
Although metis non physiological the present study shows that at the very early embryonic stages a uterus carrying zona enclosed embryos does not exhibit non physiological reactions. Multiple ovulation et moet and in vitro fertilization ivf followed by et. Embryo transfer is used to disseminate desirable genes from superior female animals from various species horses cattle sheep goats and pigs. Multiple ovulation et moet and ivf followed by et.
Possibilities for increased rates of genetic change in dairy cattle through embryo transfer and embryo splitting are examined using the multiple ovulation and embryo transfer systems previously. Multiple ovulation embryo transfer moet a conventional embryo flush is the most common procedure used in advanced cattle breeding.