Final answer:
The breeding room for rodents should maintain a temperature of about 72°F to prevent hypothermia in newborn pups, which can be fatal due to their inability to regulate their body temperature effectively.
Step-by-step explanation:
The temperature in rodents' breeding room should be kept at about 72°F (22°C) or more to avoid the problem of hypothermia in newborn pups. If the temperature falls below this threshold, the newborns can lose body heat more quickly than they can produce it, leading to hypothermia, a potentially fatal condition characterized by an abnormally low body temperature. Proper temperature control is crucial as it contributes to maintaining stable metabolic rates and ensures the well-being and survival of the pups.