Phenotypes
Abortion (embryonic lethality), TTF1-related
Charlier et al. (2016): nonsense (stop-gain) p.Arg527∗
Coat colour, dilution, MLPH-related — Cool gray; Larson Blue
In a reversal of the normal sequence of discovery, Li et al. (2016) discovered this phenotype AFTER identifying the causal mutation, by noticing that all Belgian Blue cattle with a particular mutation (MLPH: c.87_96del; p.Glu32Aspfs*1), which inactivates MLPH, have an expected dilution phenotype which the authors called "cool gray".
Coat colour, dilution, PMEL-related
Gutiérrez-Gil et al. (2007): c.64G>A Jolly et al. (2008): c.50_52delTTC Laible et al. (2021): "To better adapt dairy cattle to rapidly warming climates, we aimed to lighten their coat color by genome editing. ... Using gRNA/Cas9-mediated editing, we introduced a three bp deletion in the pre-melanosomal protein 17 gene (PMEL) proposed as causative variant for the semi-dominant color dilution phenotype observed in Galloway and Highland cattl...
Haplotype with homozygous deficiency BH6, MARS2-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 HH35, PCDH15-related
Based on strong evidence from Swiss Holsteins, Häfliger et al. (2022) reported PCDH15; c.2599C>G as a likely causal variant for this harmful haplotype.
Interdigital hyperplasia — Bovine interdigital hyperplasia
Zhang et al. (2019): "Normally IH begins with a small and painless protrusion of the interdigital skin which sometimes can already be diagnosed at calf age. In the final stage clinical signs of IH are firm tumor like masses found in the interdigital space with skin lesions that can result in deep necrosis and phlegmonous inflammations."