Why is it considered better for the IACUC to have an odd number of members?

Having an odd number of members on the Institutional Animal Care and Use Committee (IACUC) is favored primarily to avoid ties in voting. When an even number of members is present, it is possible for the committee to reach a situation where votes are split evenly, leading to indecision on important matters concerning animal welfare, research protocols, or compliance. In contrast, an odd number of members ensures that there will always be a clear majority, facilitating decisive outcomes and efficient functioning of the committee. This element is crucial in maintaining the integrity of the IACUC's decisions and ensuring that animal research is conducted ethically and in compliance with applicable regulations.