male fertility index

https://doi.org/10.1351/goldbook.10847
In rodents, number of males impregnating females divided by number of males mated, multiplied by \(\pu{100}\).
Note: This index measures the male’s ability to produce sperm that are capable of impregnating a female, assuming all mated females are fertile.
Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 768 [Terms] [Paper]