Schistosomus

Schistosomus Reflexus Syndrome: A Heritable Defect in Ruminants

Schistosomus reflexus (SR) is a rare and fatal congenital disorder. Primarily observed in ruminants, its defining features include spinal inversion, exposure of the abdominal viscera because of a fissure of the ventral abdominal wall, limb ankylosis, positioning of the limbs adjacent to the skull and, lung and diaphragm hypoplasia. Variable components of SR include scoliosis, cleft sternum, exposure of thoracic viscera, and abnormalities of the digestive and urogenital systems.

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Heritable Birth Defects In Cattle

Inherited congenital anomalies are probably present in all breeds of cattle and propagated as a result of specific trait selection. In some breeds, the occurrence of inherited anomalies has become frequent, and economically important. Veterinarians, animal scientists, and cattle breeders should be aware of inherited defects, and be prepared to investigate and report animalsexhibiting abnormal phenotypes. This review will describe the morphologic characteristics,

Developmental Anomalies in Farm Animals (II. Defining Etiology)

Anomalous development is a function of the genetic make-up of the fetus and the environment in which it develops. The cause of anomalous development may occasionally be obvious but more often is obscure, because of its multifactorial nature. Therefore a methodological approach is often required to define the etiology. In this paper we describe a methodological approach that first defines the incident, the genotype of the individuals involved, and the environment in which the fetus has developed.

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