A female animal under observation shows 'heat' for around 30 hours every 16-17 days during the fall months with little or no discharge from her uterus. Based on this information, this animal shows ___________.
A female animal under observation shows 'heat' for around 30 hours every 16-17 days during the fall months with little or no discharge from her uterus. Based on this information, this animal shows ___________.
The correct option is B Seasonal polyoestrous cycle
The reproductive cycle in non-primate mammals is called an oestrous cycle, which can be polyoestrous (more than one cycle) or monoestrous (one cycle). When many cycles occur throughout the year, it is called a non-seasonal polyestrous cycle. It continues throughout the year without a gap. E.g:- cows, pigs, rats, etc.
When few cycles occur in a small portion of the year, it is known as a seasonal polyestrous cycle. It is limited to certain seasons or a few months of the year which might vary depending on the animal. E.g:- horse, sheep, deer, cats, etc.
The menstrual cycle is similar to the non-seasonal polyestrous cycle, but here the cycles are present all throughout the year. The animals are sexually reproductive throughout their cycle, irrespective of fertility. Occurs mostly in primates- humans, chimpanzees, monkeys etc.
Since the animal shows multiple oestrous periods in only a certain period in a year, it can be considered to be showing the 'seasonal polyestrous type' reproductive cycle. During the heat period, an animal shows certain signs. For example, in sheeps the heat period may be detected by nervous behaviour, slightly swollen external genitalia, shaking of the tail, rubbing neck or bodies against rams(male sheep), etc.
The reproductive cycle in non-primate mammals is called an oestrous cycle, which can be polyoestrous (more than one cycle) or monoestrous (one cycle). When many cycles occur throughout the year, it is called a non-seasonal polyestrous cycle. It continues throughout the year without a gap. E.g:- cows, pigs, rats, etc.
When few cycles occur in a small portion of the year, it is known as a seasonal polyestrous cycle. It is limited to certain seasons or a few months of the year which might vary depending on the animal. E.g:- horse, sheep, deer, cats, etc.
The menstrual cycle is similar to the non-seasonal polyestrous cycle, but here the cycles are present all throughout the year. The animals are sexually reproductive throughout their cycle, irrespective of fertility. Occurs mostly in primates- humans, chimpanzees, monkeys etc.
Since the animal shows multiple oestrous periods in only a certain period in a year, it can be considered to be showing the 'seasonal polyestrous type' reproductive cycle. During the heat period, an animal shows certain signs. For example, in sheeps the heat period may be detected by nervous behaviour, slightly swollen external genitalia, shaking of the tail, rubbing neck or bodies against rams(male sheep), etc.
