What is an example of the 3Rs principle of reduction?

What is an example of the 3Rs principle of reduction?

• A. Using lower sentient beings
• B. Minimizing the number of potentially painful procedures used in a study
• C. Using fewer animals in a study
• D. Replacing animals with nonanimal alternatives

Answer: (C)

Reduction focuses on using the smallest number of animals necessary to obtain valid, reliable results. It requires careful study design, including statistical planning (power analysis), avoiding unnecessary duplication, and sharing data or using efficient methods so each animal contributes meaningful information. This option—using fewer animals in a study—best illustrates reducing the number of animals required while preserving scientific quality. The other ideas align with the other Rs: minimizing painful procedures relates to Refinement, which aims to lessen pain, suffering, or distress per animal; using nonanimal alternatives is Replacement, substituting methods that don’t involve animals. The concept isn’t about choosing animals based on their level of sentience, so that phrasing doesn’t fit the defined 3Rs.

Reduction focuses on using the smallest number of animals necessary to obtain valid, reliable results. It requires careful study design, including statistical planning (power analysis), avoiding unnecessary duplication, and sharing data or using efficient methods so each animal contributes meaningful information. This option—using fewer animals in a study—best illustrates reducing the number of animals required while preserving scientific quality.

The other ideas align with the other Rs: minimizing painful procedures relates to Refinement, which aims to lessen pain, suffering, or distress per animal; using nonanimal alternatives is Replacement, substituting methods that don’t involve animals. The concept isn’t about choosing animals based on their level of sentience, so that phrasing doesn’t fit the defined 3Rs.