A total of four missense variants were also identified to be suggestively associated with gestation length in the HF population; 2 were located within the ABCA13 gene in a QTL on BTA4 situated between 7.04 to 7.52 Mb whereas the remaining two SNPs were located in two separate QTL on BTA18. This evidence concerns the gene ABCA13 and hydrops fetalis.