Question

Oestrus cycle is cyclic change in the activities of ovaries and accessories duct in non primates during

Answer 1

Answer:

heat it is cyclic change during heat period

Answer 2

Answer:

The Oestrus cycle is a cyclic change in the activities of ovaries and accessories duct in non-primates during reproductive period.

Explanation:

• The oestrus cycle is a cyclic process that takes place in seasonal breeders or non-primates like cows, sheep, etc.
• It is similar to the menstrual cycle in primates.
• In placental mammals, the females exhibit cyclic changes as a result of activities in the ovaries during the reproductive phase.
• Such cyclic changes in primates are called the menstrual cycle, whereas in non-primates it is called the oestrus cycle.
• The oestrus cycle has four phases, namely proestrus, estrus, metestrus, and dietrus.
• These last for 4 to 5 days.
• During this cycle, the reproductive tract is prepared to receive an ovum (ovulation).
• In cattle, this cycle lasts for 18 to 24 days.