Figure 1. Comparison of individual weaning weights (orange) with litter weaning weights (blue) by birth and rear type for sheep. As litter size increases, individual weights tend to decrease, yet total weight of the litter produced per ewe increases, resulting in greater return when marketed.
Bar graph showing individual lamb weaning weight, decreases as litter size increases, and litter weight/ewe, increases with litter size.

Data from Southwest Virginia Agricultural Research and Extension Center Katahdin sheep flock.