is porphyria dominant trait, or a trait
pig porphyria. an erythropoietic porphyria, similar to bovine congenital erythropoietic porphoryia, but inherited as a dominant trait. Discoloration of the teeth, bones and tissues occurs, but not of the urine, except in severely affected cases.Photosensitization is not a feature. The enzymatic defect is unknown.nherited as an autosomal dominant trait; affected cats have discolored teeth, urine and tissues, severe anemia and photosensitivity associated with a deficiency of uroporphyrinogen III cosynthetase. inherited porphyria. the disease is inherited in cattle and swine and is similar to erythropoietic porphyria of humans.