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PrairieBaby Maine Coon Cats
The mail below was sent by me to some of the public lists (Maines, mcfdninfo) in March 2005. At that time I had 43 cats OFA tested. My point of this mail was that testing, selecting and outcrossing is the key to better hips. Testing and breeding back into the same gene pool does not solve a problem! I have in the meantime tested 50 cats by OFA. The not- pass percentage in these 50 cats is 2 % -- verses 23% of regular Maine Coons. A very significant difference!
----- Original Message ----- From: J. Schulz
To: MCFdnInfo@yahoogroups.com
Sent: Wednesday, March 02, 2005 8:48 AM
Subject: corrected OFA information
Hi:
I just phoned OFA and talked to one of the doctors there. This is the data I received:
Since 1990 a total of 870 Maine Coon cats were tested by OFA (The total number of preliminary results could not be obtained from OFA. I was told the percentages of preliminary results were very similar to the certified results.)
Out of those 870 Maine Coons 668 passed OFA.
This means ca. 77 % passed OFA.
This means ca. 23 % did not pass OFA.
Here are the total results out of the 870 sent in x-rays:
38 x excellent
417 x good
213 x fair
5 x borderline
101 x mild
82 x moderate
14 x severe
The doc said that they have seen an immense decline in Maine Coon x-rays sent in for evaluation over the past years. (I assume because most Maine Coon breeders don't use OFA anymore for one reason or another ). OFA's biggest year for tesing was appearantly 1999 with 200 x-rays sent in that year.
Here are the stats:
1999: 200 sent in, 24 % displastic
2000: 101 sent in, 24.8 % displastic
2002: 75 sent in, 21.3 % displastic
2003: 51 sent in, 23.5 % displastic
2004: 39 sent in, 25.6 % displastic
Looking at the numbers above, the number in displastic cats does not seem to have declined over the years at all!
Now I compared the OFA %% information with my own personal testing data of 43 high foundation content cats:
OFA excellent: 9 out of 43 (full foundation or very high foundation content)
OFA good: 28 (not 27, sorry) out of 43 (full foundation or very high foundation content)
OFA fair: 5 out of 43 (mix out of regular lines/part foundation)
OFA moderate: 1 out of 43 (very high foundation content, ca. 4 years ago)
If I compare these numbers with the total OFA statistics I do see a big difference here. Only one of mine did not pass. This would be
2.3 % foundation Maine Coons NOT passed versus 23 % NOT passed in TOTAL for regular Maine Coons (Again, there might be a slight variation because the total numbers for Maine Coons were certified only (not prelim), but as I was told by OFA that the prelim percentages were very similar).
I hope some of you find this information interesting.
PS: PLEASE --- this mail are not suggesting "foundation good -- show line bad". :-D This is such a common misunderstanding on public lists that it needs to be addressed over and over again. We are only talking about HD here and the possibility to use certain foundation lines for outcross to hopefully improve bad hips in some of our show cats (PS: There are lines in our existing breed that have a good hip history and there are foundation cats that have HD!).
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