What is the term for the time span between the birth of two consecutive calves from the same cow?

Explanation

The correct term is 'Calving interval,' which refers to the duration between the births of two successive calves from a single cow. 'Calving' refers to the act of giving birth, 'Calving pen' is the designated area for calving, and 'Calving period' generally refers to the entire season or span when calving occurs.