Mackenzie C Batt, Leila G Venzor, Keri Gardner, Rachel R Reith, Kelsey A Roberts, Nicolas J Herrera, Anna M Fuller, Gary A Sullivan, J Travis Mulliniks, Matthew L Spangler, Stephanie J Valberg, David J Steffen, Jessica L Petersen
BACKGROUND: Between 2020 and 2022, eight calves in a Nebraska herd (composite Simmental, Red Angus, Gelbvieh) displayed exercise intolerance during forced activity. In some cases, the calves collapsed and did not recover. Available sire pedigrees contained a paternal ancestor within 2-4 generations in all affected calves. Pedigrees of the calves' dams were unavailable, however, the cows were ranch-raised and retained from prior breeding seasons, where bulls used for breeding occasionally had a common ancestor...
April 27, 2024: BMC Genomics