Question

Which of the following is used for induced breeding of fish?
(a) MOET
(b) ART
(c) Hypophysation
(d) Artificial insemination

Answer 1

Induced breeding is a technique by which, by artificial stimulation, economically valuable fish (which usually do not reproduce in captive conditions) are bred. Induced breeding is a technique by which pituitary hormone or any other hormone stimulates ripe fish breeders.

Complete answer:
Currently, hypophysation is the most widely used process for the induced breeding of fish. In the hypophysation process, in a physiological salt solution, the pituitary extract is suspended. The practice of injecting fish with substances extracted from the pituitary gland for the purpose of inducing reproduction (such as ovulation) when the conditions for successful natural spawning in ponds are not favorable.

Additional information:
MOET- The most common technique used in advanced cattle breeding is the Multiple Ovulation Embryo Transfer (MOET) , a typical embryo flush. This requires a superovulation program of 5 weeks, which results in the release of many eggs from the donor cow, as opposed to one during natural heat.
The process of artificial insemination includes: collecting eggs from female fish and mixing them in a sanitation tub with sperm from male fish to induce insemination while maintaining the tub temperature to be suitable for hatching; raising inseminated eggs by feeding plankton or other feedstuffs.
So, the correct answer is ‘hypophysation’.

Note: To induce ovulation in fish, two forms of gonadotropin extracts have been used: human chorionic gonadotropin (HCG) and fish pituitary extract. By removing the pituitary from a fish and extracting the hormones, pituitary extracts are created that can then be injected into another fish.