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Achondrodysplasia (Dexter) R340

Background

In Dexter Cattle worldwide abortion occurs as the result of chrondrodysplasia (bulldog calves). The affected foetuses display disproportional dwarfism. It is a genetic disorder. Testing animals to identify carriers and to prevent carrier x carrier matings should reduce the incidence of abnormal, aborted foetuses.Recently, Reprogen from the University of Sydney Australia developed the DNA-test for chondrodysplasia in Dexter cattle. This genetic test enables the identification of carriers using a DNA-test. VHL obtained an exclusive license to perform this DNA-test.

Test specific information

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Age

This disease leads to a reduction in the number of liveborn offspring. Depending on the disease, affected individuals may be stillborn or aborted.

Throughput

Normally the result can be expected within 15 working days. This turn-around-time starts when both the sample and the fully filled-out and signed submission form have been received.

Location of disease or trait

This disease is lethal, and results in stilborn animals or embryonic death.

Breed dependence

This DNA test is available for the following breeds: Dexter, Dahomey.

Sample type

For this DNA test we accept the following materials: Hair, Semen, Blood EDTA, Blood Heparin, Tissue. Please contact PharmaDNA if you wish to submit other material as listed.

Result

An animal can be free and has in that situation two healthy alleles. When used in breeding this animal will not become ill due to the disease. It cannot spread the disease in the population.An animal can be carrier and has in that situation one healthy and one disease allele. When used in breeding 50 percent of the offspring will receive the disease allele. Carriers will not become ill.An animal can be affected and has in that situation two disease alleles. When used in breeding all offspring will also receive the disease allele. Affected will become ill.

Inheritance

This genetic factor is inherited in an autosomal, recessive, mode. This means, that the individual can be free of the disease (homozygote normal), affected (homozygous affected) or carrier (heterozygous). Carriers may spread the mutation in a population without showing symptoms themselves. Because of this, it is extremely important to identify carriers correctly to prevent spreading of a mutation.

Severity of Disease

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