Question
What is oestrous cycle? Differentiate between oestrous and menstrual cycle.
✓
Answer
Oestrous Cycle : The cyclic changes occuring in the female reproductive tracts of non-primates mammal are known as oestrous cycle. During this cycle, female is in heat period and is ready for coitus.
Differences between Oestrous and Menstrual Cycle :
Differences between Oestrous and Menstrual Cycle :
| S.No. | Oestrous Cycle | Menstrual Cycle |
| 1 | It occurs in non-primates mammals. | It occurs in primates mammals. |
| 2 | Menstruation does not occur. | Menstruation occurs. |
| 3 | Endometrium is not de-generated but reabsorbed. | Endometrium is degenerated and goes out with menstrual. |
| 4 | Copulation only when female in oestrous or heat period. | It occurs at any time of year. |
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