Phenotypes
Anhidrotic ectodermal dysplasia, EDAR-related
Bourneuf et al. (2017): a de novo likely causal variant in Charolais is single-base insertion in EDAR, resulting in a frameshift variant g.44462236_44462237insC; p.P161RfsX97
Coat colour, extension — Black/red coat colour; Haplotype HBR; Haplotype HHR
For information relating to Bos indicus cattle see: OMIA 001199-9915 : Coat colour, extension in Bos indicus
Goitre, familial
The causative mutation for this disorder was discovered via the candidate gene approach. Tassi et al. (1984) reported a 10-15-fold decrease in the concentration of TG mRNA in affected cattle; Ricketts et al. (1985) reported the use of S1 nuclease assays and electron microscopy to narrow down the location of the mutation to the junction of exon 9 and intron 9; and Ricketts et al. (1987) reported the use of cloning and sequencing of genomic DNA ...
Haplotype with homozygous deficiency BH24, CPT1C-related
Häfliger et al. (2021) investigated “the two Braunvieh populations reared in Switzerland, the dairy Brown Swiss (BS) and the dual-purpose Original Braunvieh (OB). We performed a genome-wide analysis of array data of trios (sire, dam, and offspring) from the routine genomic selection to identify candidate regions showing missing homozygosity and phenotypic associations with five fertility, ten birth, and nine growth-related traits. In addition,...
Haplotype with homozygous deficiency HH25, RIOX1-related
No summary available.
Neuronal ceroid lipofuscinosis, 3 — delayed-onset retinal degeneration
Reith et al. (2024): "Whole-genome sequencing (WGS) of 7 blind cattle and 9 unaffected relatives revealed a 1-bp frameshift deletion in ceroid lipofuscinosis neuronal 3 (CLN3; chr25 g.26043843del) for which the blind cattle were homozygous and their parents heterozygous. The identified variant in exon 16 of 17 is predicted to truncate the encoded protein (p. Pro369Argfs*8) ... ."
Syndactyly — Mule foot disease; mulefoot; Haplotype HHM
Syndactyly has been reported in many breeds of cattle in many countries. Most of the documentation, however, concerns its occurrence in US Holsteins, where, as a result of the siring of more than 60,000 calves by a bull who was subsequently shown to be a carrier, the disorder attracted considerable attention (Anon., 1967). The possibility that artificial selection favouring heterozygotes may have contributed to the unacceptably high frequency ...