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Showing posts with the label coefficient of inbreeding

What can Maine Coon breeders do to minimize inherited diseases?

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Maine Coon breeders can take several steps to minimise the incidence of inherited diseases such as hypertrophic cardiomyopathy (HCM), hip dysplasia and spinal muscular atrophy (SMA). In my view, the quality of a Maine Coon cat breeder depends on how energetically they adopt the following strategies which I don't claim is a complete list. As a purchaser of a Maine Coon kitten I'd ask some pertinent questions when meeting the breeder as to how they deal with these aspects of their operation. Genetic testing: the competent and committed Maine Coon breeder will engage in genetic testing. They will in fact prioritise it to identify carriers of specific diseases. They want to know if there foundation cats are free of inherited diseases. If they carry the genetic mutations which create these diseases. And there are DNA tests available for the three diseases mentioned above. These are the major inherited diseases. Breeders will select breeding pairs that are free from these genetic mu...

Maine Coons are popular because purchasers ignore health and are captivated by their appearance

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This is a slightly black, depressing article but the idea came to me a moment ago. The reason why the Maine Coon cat breed is in the top three most popular cat breeds in America and perhaps around the world is because the people who buy Maine Coon kittens from breeders are enamoured of the breed's appearance while apparently ignoring an aspect of this breed which is more important namely their health. And their health is not good. You might argue that this breed's health is dire. You might argue that it's shameful that such a handsome cat breed with such a fantastic history has been brought low through irresponsible and unethical breeding. I don't need to remind you about the health of this cat. But I will just touch on a few points. If you want to look into the health of this breed more, I would ask you to use the search facility at the top of the page. Or if you like click on this link because that will take you to the majority the articles about Maine Coon cat healt...

Maine Coon Coefficient of Inbreeding not mentioned on CFA and TICA websites but is mentioned by GCCF

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This information might interest Maine Coon aficionados i.e. those people who are really into the Maine Coon cat. It's about inbreeding which is measured by the inbreeding coefficient (COI). Sarah Hartwell very usefully provides a diagrammatic chart of the coefficient of inbreeding. It is a scale of 0 to 1 but is often presented as a percentage. So, for example, when siblings are bred to each other the coefficient of inbreeding is 25% and when first cousins are bred to each other the coefficient of inbreeding is 6.25%. COI chart as presented by Sarah Hartwell on her website messybeast.com . Inbreeding depression When breeders inbreed their cats too much it can cause what the cat fancy describes as inbreeding depression which is a compromised immune system and even anatomical defects such as you see in the white tiger. The white tiger by the way is heavily inbred. Inbreeding depression means ill health basically and a shorter lifespan and weak kittens et cetera. It's what you wou...

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