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a sudden, severe hemolytic disease that appears sporadically in well-nourished dairy cows 2-4 weeks after calving, and usually occurs in stabled animals in the winter and early spring; the cause is not known, although the disease is often associated with hypophosphatemia.
Synonym(s): puerperal hemoglobinemia
the presence of free hemoglobin in the urine. In true hemoglobinuria the protein has originated from erythrocytes hemolyzed within the vascular system. In false hemoglobinuria it comes from erythrocytes in the urine that have hemolyzed there, leaving red cell envelopes in the urinary sediment. In both forms the urine is colored dark red to almost black.
is an acute, highly fatal toxemia of cattle and sheep caused by Clostridium haemolyticum (C. novyi type D). It is characterized by hemoglobinuria, jaundice and sudden death with large, usually single infarcts in the liver.
intravascular hemolysis occurs in the blood vessels in the intestinal wall immediately after the calf, rarely an adult, has drunk a large amount of very cold water after a period of deprivation. Transient hemoglobinuria may occur. See also cold anemia.
when lysis of erythrocytes occurs after the urine is passed.
see postparturient hemoglobinuria.
relates to the dam, in the period immediately after parturition.
the effects of pregnancy, parturition and the onset of heavy lactation especially in animals with multiple offspring, coupled with the high incidence of metabolic diseases and disease of the uterus and the mammary gland at this time can cause serious debilitation which requires intensive management to correct.
inflammation of the endometrium as a result of infection introduced usually at parturition; one of the principal causes of infertility.
of sows see mastitis-metritis-agalactia.
a disease of high-producing dairy cows in the period of about a month after calving characterized by acute intravascular hemolysis, hemoglobinuria, pallor of mucosae and a heavy mortality rate. Predisposed by a nutritional deficiency of phosphorus or copper.
postparturient hemolytic anemia
see postparturient hemoglobinuria (above).
see milk fever.
drain of antibodies in colostrum depletes maternal resources and reduces immune status.
see periparturient hypocalcemia.