Bruising or discoloration, Cold feet, Cold hands and Fatigue. WebMD Symptom Checker helps you find the most common medical conditions indicated by the symptoms bruising or discoloration, cold feet, cold hands and fatigue including Bruise or contusion, Raynaud phenomenon, and Hematoma.
The approximate blood volume of a rat is 55-70 ml/kg of body weight. For a 300 g rat this is equivalent to 17-21 ml (5). Single sample: Without fluid replacement, the maximum blood volume which can be safely removed for a one time sample is 10% of the total blood volume or 5.5-7 ml/kg.
Basic rat statistics. Rats are extremely well studied animals, so we know an enormous amount about their basic biology. Here's a list of the Norway rat's basic biological data (Baker et al. 1979 and Weihle 1987, as reported in Pass and Freeth 1993; additional references noted below).For definitions of some of the terms and measurements used, see the next section. The prefactor 10 is empirically adjusted. 2  The prefactor for rats is 9.1. 3  Therefore, to find the surface area of a rat, plug its mass into the equation 9.1 x g 0.66. 4  So, a 300 gram rat would have a surface area of 9.1 x 300 0.66 = 392.6 cm 2.