Detailed LOOF statistics per breed

LOOF offers you statistics concerning:

• kittens and litters (number of pedigrees per year, size of litters, months of birth, ...)
• breeding cats (number of active studs/queens, number of kittens per stud/queen, age when breeding, inbreeding coefficient, ...
• breeders (number of breeders sorted out by number of litters produced per year, ...)

These statistics cover the period 2003 to 2011 included (for full year figures) and were generated based on the data known end 2011.

A full set of these statistics is published here, both for all breed cats (visible on this page and downloadable in pdf format) as well as for each breed group where more than 150 pedigrees were generated between 2003 and 2011:

• Persian/Exotic shorthair
• Birman
• Maine Coon
• Chartreux
• British shorthair/longhair
• Norwegian Forest Cat
• Bengal
• Siamese/Oriental/Balinese/Mandarin
• Ragdoll
• Abyssinian/Somali
• Sphynx
• Turkish Angora
• Russian/Nebelung
• Scottish/Highland
• Devon Rex
• Thai
• Siberian
• Bombay/American Burmese
• Egyptian Mau
• Asian/English Burmese/Burmilla
• Cornish Rex
• Selkirk
• Tonkinese
• Singapura
• Turkish Van

For any question and suggestion concerning these statistics, you may contact Marie-Bernadette Pautet.

Kittens and Litters Statistics, regardless of the breed

Number of pedigrees registered per year

(kittens who haven't bred in LOOF yet in red, kittens who have become LOOF breeders in orange)
(years refer to the pedigree number)

Litter size analysis

(along the x axis, number of kittens per litter; along the y axis, corresponding number of litters)

Which corresponds to a mean litter size (registered with LOOF since 2003) of 3.18 kittens
(3.19 kittens for litters born during the last two years)

Spread of litter birth dates month per month

(along the x axis, month during which the litter was born - along the y axis corresponding number of litters)

Inbreeding coefficient for LOOF-registered kittens

(along the x axis, inbreeding coefficient of kittens ; along the y axis, number of kittens with this inbreeding coefficient)
NB: the computation only includes "traceable" inbreeding, i.e. coming from known ancestors,
the inbreeding coefficient of unknown ancestors being set to 0

Mean per litter, computed over 63473 litters born since 2003: 3.88%
(mean per kitten, computed over 201545 kittens: 3.60%)

Stud/queen statistics

Studs

6101 studs having had at least one litter during the last two years
(1148 studs contribute for more than half of the kittens, and 2862 studs contribute for more than 80% of the kittens)

Analysis of the number of kittens per stud during the last 24 months:

(along the x axis, number of kittens per stud - along the y axis, number of studs concerned)

Analysis of the number of kittens per stud since 2003:

Spread of active studs according to their age when their kittens are born

(one bar per trimester, the x-axis is labelled with the age in full years)

Percentage of cross-cattery mating: 29,5% (matings where the stud doesn't belong to the same breeder as the queen),
over a total of 63514 registered matings since 2003.

Queens

11696 females having had at least one litter during the last two years.
(ratio of 1.9 active queens per active stud).
(3045 females contribute for more than half of the kittens, and 6610 females contribute for more than 80% of the kittens)

Analysis of the number of kittens per queen during the last 24 months:

(along the x axis, number of kittens per female - along the y axis, number of corresponding queens)

Analysis of the number of kittens per queen since 2003:

Spread of queens according to their age upon delivery

(one bar per trimester, the x-axis is labelled with the age in full years)

Breders' Statistics

9135 breeders have had at least one litter since 2003
5081 breeders have registered at least one litter during the last two years.

Respective number of breeders having registered one single litter (red), between 2 and 4 litters (orange),
between 5 and 9 litters (dark yellow), or at least 10 litters during the year (pale yellow)

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