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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 ...
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.
In the 1940s, influenced by the studies of his former professor Edward C. Tolman, Tryon decided to test the theory that intelligence is an inherited trait. [2] To do this, he tested the ability of laboratory rats to navigate a maze: rats who took fewer wrong turns to get through the maze and reach the food at the end were termed "maze-bright", while those who took many wrong turns were termed ...
Tyron's rat chart. Prior to Robert Tryon’s study of selective rat breeding, concluded in 1942, many psychologists believed that environmental, rather than genetic, differences produced individual behavioral variations. Tryon sought to demonstrate that genetic traits often did, in fact, contribute to behavior.
A laboratory mouse cage. Mice are either bred commercially, or raised in the laboratory. In the U.S., Class A breeders are licensed by the U.S. Department of Agriculture (USDA) to sell animals for research purposes, while Class B dealers are licensed to buy animals from "random sources" such as auctions, pound seizure, and newspaper ads.
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.
Some local residents and an animal-rights group are protesting plans for a monkey-breeding facility in southwest Georgia. Opponents on Tuesday urged the Bainbridge City Council to block plans by a ...
In 2010 a research plan to evaluate the effectiveness and implementation of the rats in diagnosing tuberculosis was started. [4] The same year APOPO developed an automated training cage in order to remove human bias. The rats' response is measured by optical sensors and the cage produces an automated click sound with food delivery. [8]
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