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Why are increasing numbers of animals sacrificed for research, especially for repetitive experiments?

April 26, 2017animals especially experiments Numbers repetitive Research sacrificed

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Why are increasing numbers of animals sacrificed for research, especially for repetitive experiments?

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The number of animals used in research has actually decreased in the past 20-25 years. Best estimates for the reduction in the overall use of animals in research range from 20% – 50%. This reduction is more consistent and striking when comparing species. For example, best government estimates report that the number of cats used in research has dropped 66% since 1967. Due to a variety of factors, including the increase in nonanimal adjunct testing and the refinement of laboratory animal medicine, there are fewer animals used for many research projects. Repetition of some experiments must occur for a variety of scientific reasons. The validation of data is critical to minimize or discover potential error. Experiments must be repeated to account for even the slightest change in variables such as dosage, temperature and weight.