RT Journal Article SR Electronic T1 An improved pig reference genome sequence to enable pig genetics and genomics research JF bioRxiv FD Cold Spring Harbor Laboratory SP 668921 DO 10.1101/668921 A1 Amanda Warr A1 Nabeel Affara A1 Bronwen Aken A1 Hamid Beiki A1 Derek M Bickhart A1 Konstantinos Billis A1 William Chow A1 Lel Eory A1 Heather A Finlayson A1 Paul Flicek A1 Carlos G Girón A1 Darren K Griffin A1 Richard Hall A1 Gregory Hannum A1 Thibaut Hourlier A1 Kerstin Howe A1 David A Hume A1 Osagie Izuogu A1 Kristi Kim A1 Sergey Koren A1 Haibo Liu A1 Nancy Manchanda A1 Fergal J Martin A1 Dan J Nonneman A1 Rebecca E O’Connor A1 Adam M Phillippy A1 Gary A. Rohrer A1 Benjamin D. Rosen A1 Laurie A Rund A1 Carole A Sargent A1 Lawrence B Schook A1 Steven G. Schroeder A1 Ariel S Schwartz A1 Benjamin M Skinner A1 Richard Talbot A1 Elisabeth Tseng A1 Christopher K Tuggle A1 Mick Watson A1 Timothy P L Smith A1 Alan L Archibald YR 2019 UL http://biorxiv.org/content/early/2019/06/13/668921.abstract AB The domestic pig (Sus scrofa) is important both as a food source and as a biomedical model with high anatomical and immunological similarity to humans. The draft reference genome (Sscrofa10.2) represents a purebred female pig from a commercial pork production breed (Duroc), and was established using older clone-based sequencing methods. The Sscrofa10.2 assembly was incomplete and unresolved redundancies, short range order and orientation errors and associated misassembled genes limited its utility. We present two genome assemblies created with more recent long read technologies and a whole genome shotgun strategy, one for the same Duroc female (Sscrofa11.1) and one for an outbred, composite breed male animal commonly used for commercial pork production (USMARCv1.0). Both assemblies are of substantially higher (>90-fold) continuity and accuracy compared to the earlier reference, and the availability of two independent assemblies provided an opportunity to identify large-scale variants and to error-check the accuracy of representation of the genome. We propose that the improved Duroc breed assembly (Sscrofa11.1) become the reference genome for genomic research in pigs.