Dwarfism in Cattle
What is the Disease?
Bulldog Dwarf: Calf will die at birth or soon after. The calves with bulldog dwarfism have an extremely compressed body.
Snorter Dwarf: Calves have a short-blocky appearance and have a deformed nose that caused labored breathing
Long-Headed Dwarf: Causes a small size due to affecting the growth plates, mainly in the legs. The bones in the calf's head grown normal while the leg bones do not develop as they should so their head seems in-proportionate to the rest of the body.
A Heterozygous cow bred to a heterozygous bull will result in
1/4 homozygous normal calf
1/4 homozygous D2 calf (some form of dwarfism)
1/2 heterozygous normal calf but carrier for dwarfism
Other Causes of Disease