Onpa huonoa otsikointia, jos ongelmana on nivelet, pistä se otsikkoon kivennäisten sijaan.
http://www.merckvetmanual.com/mvm/musculoskeletal_system/lameness_in_cattle/disorders_of_the_bones_and_joints_in_cattle.htmlMany causes and predisposing factors influence the development of degenerative joint lesions. There is almost certainly an inherited predisposition to degenerative arthropathy. Certain conformations, eg, straight hocks in beef bulls, are also incriminated. Joint instability after trauma is a common cause. Nutritional factors involved in some cases are rations high in phosphorus and low in calcium, which probably influence the strength of subchondral bone. Copper deficiency or fluoride poisoning also may act similarly. Forced traction of a calf in breech presentation can impede the blood supply to the hip joint, and arthritis may result. The role of infection is unclear. Infectious arthritis in calves usually produces severe changes in the hock, but degenerative arthropathy rarely involves this joint.
Bulls fed high-grain diets for show may become lame when as young as 6–12 mo, but most cases are first noticed at 1–2 yr.
Eli suomeksi, tarkasta onko sonneilla samaa perimää. Fosforin ja kalsiumin määrää voi ehkä säätää (enemmän kalsiumia), ja kuparin. Ja kuten lähdetekstissä mainitaan myöhemmin, jo ilmenneisiin tapauksiin ei välttämättä voida vaikuttaa kuitenkaan. Ja bäckkärin mainitsema korkea väkirehuprosentti on tuolla kanssa mainittu.