Question

Artificial breeding of cattle is brought about by

• A. artificial insemination
• B. super ovulation and embryo transplantation
• C. MOET
• D. all of these

Answer 1

Answer: (D)

all of these

Answer 2

Artificial breeding method of cattle involves following methods: (i) In artificial insemination $(Al)$ method, the semen of superior male is collected and injected into the reproductive tract of the selected female by the breeder. The semen can be used immediately or can be frozen for later use. (ii) In multiple ovulation embryo transfer technology ($MOET$) method, hormones (with $FSH$-like activity) are given to the cow for inducing follicular maturation and super ovulation. Instead of one egg, which they usually give per cycle, they produce $6$ to $8$ eggs. The cow is either mated with a best bull or artificially inseminated. The embryos at $8$ to $32$ cells stage are recovered and transferred to surrogate mothers. The genetic mother is available for another super ovulation. $MOET$ has been done in cattle, sheep, rabbits, buffaloes, mares, etc.