The Effect of Parity Number on Litter Size, Health and Performance in Working Dogs
Paul E. Mundell
Conference Proceedings, 4th International Working Dog Breeding Association, Melbourne, Australia, Vol. 4, pp. 141, 2005
Abstract
An analysis of 590 litters found that both litter size and puppies' later working success declined with increasing parity number, with implications for how many litters a breeding bitch should produce.