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Congenital contractural arachnodactyly (CA), also known as fawn calf syndrome, is an autosomal recessive genetic disorder in cattle. [1] The disorder affects the connective tissue of muscles, [ 1 ] leading to contracture of the upper limb (most obvious in the hind limbs), and laxity of the joints of the lower limbs. [ 2 ]
The parasite is identified in the tissues of many bovine aborted fetuses but also of stillborn calves and, rarely, of clinically affected newborn calves. The diagnosis of the infection is assisted through histopathology and immunohistochemical examination of aborted fetuses and serologic testing of cattle for evidence of infection. [ 8 ]
These disease signs have occurred during the period when the disease vectors (mosquitos, sandflies, midges) are active, during the summer and autumn of 2011, mainly affecting cattle. Stillbirths and birth defects in sheep, cattle and goats; Congenital malformations in newborn sheep, goats and calves are the most obvious symptoms.
In dairy breeds, the disease may occur in calves between birth and 4 months of age. [12] In rustic breeds or beef cattle, heifers and young steers up to 12 months of age can be affected. In calves, muscles in upper portion of the front legs and the hind legs are degraded, causing the animal to have a stiff gait and it may have difficulty standing.
You're essentially "hiding" the new calf so the mama won't realize that the baby isn't theirs. They then bring the calf to its new mother when it's ready to nurse. Nursing releases oxytocin, which ...
Calves commonly face on-farm acquired diseases, often of infectious nature. Preweaned calves most commonly experience conditions such as diarrhea, omphalitis, lameness and respiratory diseases. Diarrhea, omphalitis and lameness are most common in calves aged up to two weeks, while the frequency of respiratory diseases tends to increase with age.
The three-week-old youngster, who already weighs 11st 7lbs (73kg), has emerged into the rhino reserve at the Yorkshire Wildlife Park, in Doncaster.
Huntington's disease; Hirschsprung's disease, or congenital aganglionic megacolon; Hypertrichosis; Hypoglossia; Hypomelanism or hypomelanosis (albinism) Hypospadias; Haemophilia; Heterochromia; Hemochromatosis