Funding for this research was provided by:
Norges Forskningsråd (207568)
Received: 23 January 2020
Accepted: 13 May 2020
First Online: 26 May 2020
Ethics approval and consent to participate
: All animals were cared for in line with laws, internationally recognized guidelines and regulations for keeping pigs in Norway (The Animal Protection Act of December 20th, 1974, the Animal Welfare Act of June 19th, 2009 and the Regulations for keeping of pigs in Norway of February 18th, 2003). The animals used in this study were AI boars kept as a routine by Norsvin’s breeding program. Ejaculate samples used in this study were part of routine collections, and testis tissue samples were taken after regular slaughter, meaning no ethics committee approval was needed. No animal experiments have been conducted in the scope of this research.
: Not applicable.
: The authors declare that they have no competing interests.