Energy in the depositional environment: The first key to the identification of sedimentary facies and environments is the relationship between energy and clast size. Generally, the higher the energy (that is, the faster the wind or water is moving) the larger the grains that can be kept in suspension.
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.
Most porphyrias are inherited disorders, meaning they are caused by abnormalities in genes passed from parents to children. Scientists have identified the genes for all eight enzymes in the heme pathway. Some forms of porphyria result from inheriting an abnormal gene from one parent. Other forms are due to inheriting two abnormal genes-one from each parent. The risk that members of an affected family will have the disease or transmit it to their children depends on the type of porphyria. One type of porphyria -- porphyria cutanea tarda -- is most often an acquired disorder.