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Laboratory rats or lab rats are strains of the rat subspecies Rattus norvegicus domestica (Domestic Norwegian rat) which are bred and kept for scientific research. While less commonly used for research than laboratory mice , rats have served as an important animal model for research in psychology and biomedical science [ 1 ] , and "lab rat" is ...
Many laboratory animals, including mice and rats, are chronically stressed which can also negatively affect research outcomes and the ability to accurately extrapolate findings to humans. [ 32 ] [ 33 ] Researchers have also noted that many studies involving mice, rats and other rodents are poorly designed, leading to questionable findings.
Charles River was founded in 1947 by Henry Foster, a young veterinarian who purchased one thousand rat cages from a Virginia farm and set up a one-person laboratory in Boston overlooking the Charles River. To fulfill the regional need for laboratory animal models, he bred, fed, and cared for the animals and personally delivered them to local ...
Laboratory animal suppliers in the United Kingdom breed animals such as rodents, rabbits, dogs, cats and primates which they sell to licensed establishments for scientific experimentation. Many have found themselves at the centre of animal rights protests against animal testing .
The cages are constructed and designed in a specific way to ensure an absolute microparticle free inner environment. This generally includes a cage bottom, a cage top (with a food hopper and water bottle holder incorporated) and a filter lid. It is also designed to allow maximum comfort of the animal and to provide a secure, chew proof environment.
The company supplies marmosets, beagles, cats, rabbits, guinea pigs, rats, mice, gerbils, and hamsters, as well as hybrid, mutant, and transgenic animals. Its brochure says it supplies more stocks and strains of lab animals than any other commercial supplier in the world. [ 6 ]
The fancy rat (Rattus norvegicus domestica) is the domesticated form of Rattus norvegicus, the brown rat, [1] and the most common species of rat kept as a pet.The name fancy rat derives from the use of the adjective fancy for a hobby, also seen in "animal fancy", a hobby involving the appreciation, promotion, or breeding of pet or domestic animals.
During his first tests, he placed around 32 to 56 rats in a 10-by-14-foot (3.0 m × 4.3 m) cage in a barn in Montgomery County. He separated the space into four rooms. Every room was specifically created to support a dozen matured brown Norwegian rats. Rats could maneuver between the rooms by using the ramps.
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