Question

Which of the following has been recently used for increasing productivity of super milch cows?
A) Artificial insemination by a pedigree bull only
B) Superovulation of a high productivity cow only
C) Embryo transplantation only
D) A combination of superovulation. Artificial insemination and embryo transplantation into a carrier cow (surrogate mother)

Answer 1

Hint:IVF is a type of assisted reproductive technology used for infertility treatment and gestational surrogacy. A fertilized is implanted into a surrogate's uterus, and the subsequent child is hereditarily inconsequential to the surrogate.

Complete answer:
Superovulation, otherwise called controlled ovarian hyperstimulation, is the way toward initiating a female to deliver more than one egg in a month by infusing a hormone. Controlled ovarian hyperstimulation is a method utilized in assisted reproduction including the utilization of fertility medications to induce ovulation by multiple ovarian follicles. These different follicles can be taken out by oocyte recovery (egg assortment) for use in vitro treatment (IVF), or be offered time to ovulate, bringing about superovulation which is the ovulation of a larger than-normal number of eggs, generally in sense of at least two.
 Artificial insemination is the method where semen with living sperms is collected from the male and brought into the female reproductive tract at legitimate time with the assistance of instruments. This has been found to bring about a normal offspring. In this cycle, the semen is inseminated into the female by setting a segment of it either in a collected or diluted form into the cervix or uterus by mechanical strategies at the best possible time and under most clean and hygienic conditions.
 The primary utilization of embryo transfer in cattle has been to intensify reproductive rates of females. It is conceivable to increment reproductive rates of valuable bovines by a normal of ten times or more in a given year and five fold or more per lifetime with current embryo transfer technique.
 Hence, the correct answer for this question is D, i.e. A combination of superovulation. Artificial insemination and embryo transplantation into a carrier cow (surrogate mother).

Note:There can be cases when ovulated follicles are fertilized in vivo, regardless of whether by natural or artificial insemination, there is an extremely high risk of a multiple pregnancy.