1. Aae, H., n.d. Understanding the Hidden Losses From High Sow Replacement Rates. Zinpro Resource Center. (WWW Document) https://www.zinpro.com/trace-minerals-in-swine-nutrition-improve-herd-longevity-reduce-hidden-losses/
2. The genetic relationships between conformation assessment of gilts and sow production and longevity;Aasmundstad;Livest. Sci.,2014
3. Determining optimal maximum culling parity in commercial breeding sow herds;Abell,2010
4. Ovarian follicle development and genital tract characteristics in different birthweight gilts at 150 days of age;Almeida;Reprod. Domest. Anim.,2017
5. Biosecurity considerations for pork production units;Amass;J. Swine Health Prod.,1999