What occurs after birth in rat, mice, and guinea pig females?

What occurs after birth in rat, mice, and guinea pig females?

• A. Postpartum estrus
• B. Change in blood pressure
• C. Decrease in urination
• D. Farrowing

Answer: (A)

Postpartum estrus is the return to sexual receptivity right after birth, which occurs in rats, mice, and guinea pigs. In these species, the reproductive system can resume activity quickly after parturition, so the female may become fertile again within a short time and be able to conceive another litter soon after giving birth. This is a normal postpartum process and differs from unrelated physiological changes like blood pressure shifts or urination changes. Farrowing refers specifically to pig births, so it’s not applicable to rats, mice, or guinea pigs.

Postpartum estrus is the return to sexual receptivity right after birth, which occurs in rats, mice, and guinea pigs. In these species, the reproductive system can resume activity quickly after parturition, so the female may become fertile again within a short time and be able to conceive another litter soon after giving birth. This is a normal postpartum process and differs from unrelated physiological changes like blood pressure shifts or urination changes. Farrowing refers specifically to pig births, so it’s not applicable to rats, mice, or guinea pigs.