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inbreeding
Amount
of inbreeding is expressed in %.
The inbreeding is
calculated on several generations. Considering the frequent crossings
between same parents of the beginning of the breeding, we can see cats
nowadays showing a rate of inbreeding.
Value are :
<10% = acceptable inbreeding
10-20% = high inbreeding
>20% = very high inbreeding
We know that the
cosanguinity is favorable to the development of genetic diseases, this
is also true for Maine Coon (See "Health"). It is thus of primary
importance to think well of the mating to make.
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Top
5
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The
Maine Coon breed is founded on more than hundred foundation cats. If
you look at the pedigrees of the Maine Coons we see that most of them
are founded for 65% - 75% on the same five foundation cats.
These 5
cats are called the Top 5
The Top 5 of the Maine
Coon foundation cats are:
- Andy Katt of Heidi Ho
- Bridget Katt of Heidi Ho
- Dauphin de France of Tati-Tan
- Tatiana of Tati-Tan
- Smokie Joe of Whittemore
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Clones
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In 1978 Heidi Ho Sonkey
Bill was born, a grand son and double great grand son of Andy and
Bridget Katt of Heidi Ho. When breeded to Tanstaafl Polly Adeline the
amazing thing was that their offspring all looked alike, almost like
clones.
When we speak of "clones"
we are talking about the sons and daughters of Sonkey and Polly.
The clones were very
nice, good typed and sized. They were used over and over, and there was
a lot of linebreeding well with important inbreeding.
Nowadays many Maine Coon
have a pedigree with 35% clones or more.
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Foundation cat
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A cat of foundation (F1) may
live in a farm, in
the nature, or in refuge (generally in the United States). No or only
one parent of F1 is known and recorded. A breeding of foundation is
known as when the stockbreeders introduce cats of foundation into the
genetic inheritance of the race of Maine Coon and thus create new lines.
When we talk about lines of
foundation, we refer
to recent lines which are not yet in usual pedigrees. To introduce a
cat of foundation into a breeding makes it possible to widen the
genetic pool of the race by bringing new blood, very important process
to fight against genetic problems.
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F1 is a first generation of cat of foundation : no or
1 parent is known and recorded
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F2 is a second generation of cat of foundation: the two
parents are known and the cat is recorded
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F3 is a third generation of cat of foundation: the two
parents and the two
gd-parent and recorded
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F4 is a fourth generation of cat of foundation and so on....
A cat of
foundation is a cat with lines
100% different from those of a usual pedigree
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Outcross
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An outcross
cat
can be either a mating
between a cat with usual pedigree and a cat of foundation or a cat with
usual pedigree and a cat of partial lines of foundation regular pedigree.
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Phixius Star Conception
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