At what age do female rats typically reach their reproductive heat (oestrus)?

Female rats typically reach their reproductive heat, or oestrus, around 2 months of age. This timing aligns with the onset of sexual maturity in the species, which is characterized by the ability to reproduce. Age at which female rats enter oestrus can depend on various factors such as genetics, environmental conditions, and overall health, but 2 months is the generally accepted average for laboratory rats.

This stage is crucial for breeding and understanding reproductive cycles in rats, making this knowledge essential for those involved in animal care and research. Recognizing this timeline helps in planning breeding schedules and understanding the reproductive behavior of female rats. Understanding the onset of oestrus can influence various aspects of rat management and research protocols, ensuring effective animal husbandry practices.