A Comprehensive Introduction to the Characteristics and Experimental Uses of the Laboratory Rat

The laboratory rat is an albino variant of the brown rat (Rattus norvegicus) and is classified under the class Mammalia, order Rodentia, family Muridae. It is one of the common laboratory animals. Its entire body is covered in white fur, its eyes are mostly red, and its temperament is relatively docile. It is slightly larger than the house mouse, which makes it more convenient to raise, handle, and record observations.

In terms of biological characteristics, the laboratory rat is an omnivorous animal with a fairly broad diet and strong adaptability, and its habit of being active at night and resting by day is quite pronounced. Its reproductive capacity is strong, its growth rate is fast, and its life cycle is relatively short. These traits make it an experimental subject widely used in medicine, pharmacology, nutrition, and veterinary research.

In terms of feeding and management, laboratory rats are generally kept in cages. The rearing environment needs to maintain suitable temperature, humidity, and ventilation conditions, the bedding must be replaced regularly, and the cages should be cleaned and disinfected frequently. Specialized pellet feed can be used, while ensuring an adequate supply of clean drinking water and avoiding feeding moldy or contaminated food.

It should be noted that laboratory rats are relatively sensitive to environmental changes. During the rearing process, noise and disturbance should be minimized as much as possible, and epidemic prevention and isolation should be carried out well to prevent the spread of disease. In addition, laboratory rats are not the same as wild rats, and individuals from laboratories or kept as pets generally should not be released at will. After contact, hands should also be cleaned promptly, and daily hygiene should be given attention.