While cattle can develop an immunity to babesiosis, in nonimmune cattle the destruction of the blood cells by the merozoites releases hemoglobin, resulting in the characteristic red urin (and feces) associated w ith Texas fever, also called redwater or redwater fever, murrain, spenetic fever, splenetic fever, Spanish fever, acclimation fever, southern fever, and eventually, after the etiology of the disease was deciphered, tick fever.