Biological Characteristics and Data (Mice)

Mouse Surgery Protocol ( Click to Download )

Mouse Surgery Protocols
(edited 1/11/96)

A. Mice, like most species have a circadian rhythm. Investigators should be aware that this may affect biological data and should standardize the time of day that samples/measurements are taken to avoid this affect. The standard light/dark cycle at the University of Massachusetts is ???. The adult mouse weighs approximately 40 grams and this small size and resulting large surface area/body weight ratio makes them susceptible to changes in environmental conditions. The core body temperature is easily affected by small changes in temperature which may modify the physiologic responses of the animal. The acute hearing of mice makes them highly sensitive to ultrasounds and high pitched noises inducing a stress response that has been empirically related to annibalism of pups by their dams. The well developed sense of smell is used to detect pheromones used in social interactions. The poor vision of mice makes them unable to detect color and red light is often used to observe animals during the dark cycle.

B. Basic Biological Data

Adult body weight:male 20-40gm
Adult body weight:female 20-40gm
Body surface area 10.5(wt. in grams)
Life span 1.5-3 years
Food consumption 15 gm/100 gm/day
Water consumption 15 ml/100 gm/day
Breeding onset:male 50 days
Breeding onset:female 50-60 days
Gestation Period 19-21 days
Body Temperature 36-37 C
  36.5-38.0 C
Heart rate 500-600 beats per minute
  325-780 beats per minute