1) A genome-wide association study has provided insight into the hornless phenotype and the hornless intersex syndrome (PIS) in goats

2) Literature review by a doctoral student: The role of pain management on the welfare of calves undergoing dehorning.

https://doi.org/10.3168/jds.2021-21349


3) Novel insights into the hornless phenotype and horn ontogeny of cattle in Bovidae.

https://doi.org/10.1371/journal.pone.0063512


4) Independent hornless mutations leading to complex differences in gene expression in cattle.

https://doi.org/10.1371/journal.pone.0093435