What condition can occur if calcium levels are low in sheep?

Low calcium levels in sheep can lead to the formation of urinary calculi, which are mineral crystallizations that can block the urinary tract. Calcium is essential for various metabolic and physiological processes, including the maintenance of normal pH levels in the urine. When calcium levels are deficient, a higher concentration of phosphorus relative to calcium can occur, leading to an environment conducive to the formation of these stones.

Urinary calculi can cause significant health problems in sheep, including painful urinary blockages, which may require veterinary intervention. They are particularly a concern in rams and wethers (castrated males) due to their anatomy, which makes them more susceptible to urinary blockages.

The other options, such as bone density loss and inflammation of joints, are more directly associated with chronic deficiencies in calcium and other minerals but do not typically present as immediate conditions linked to low calcium levels as urinary calculi do. Weigh gain is typically unrelated to calcium deficiency, as inadequate calcium does not promote metabolic functions necessary for weight gain.