Introduction
This document is seen as a
way of ensuring breeders observe what is considered 'best practice' in their
involvement with the LaPerm and particularly in their LaPerm breeding
programmes.
The LaPerm, unlike most
breeds but typical of other rex breeds, owes its origin to one cat - Curly, who
was born in 1982 on Linda and Dick Koehl’s farm in The Dalles, Oregon. Several
years of unregulated breeding gave rise to a small colony of curly, or rex
coated cats on the farm and when selective breeding began these cats were the
basis of the breed. As with other rex breeds, starting with a small gene pool
meant that outcrossing to straight coated cats was vital to improve the size,
health and strength of the breed's gene pool. Both long and short coats were
present in the original colony and are recognised within the breed.
Aims
It is vital that regular
selective outcrossing is maintained to increase the gene pool and improve
stamina and health whilst maintaining correct type. When breeding curly to curly
it is vitally important that careful selections are made to ensure low
inbreeding coefficients. This is 'best for the breed' in its ongoing
development.
Guidelines
The LaPerm gene (Lp) is
dominant so LaPerm Variants do not carry the LaPerm gene, but may be useful in
breeding programmes when mated back to LaPerms. LaPerms may carry the straight
haired gene recessively so LaPerm x LaPerm matings can produce LaPerm Variants.
LaPerms which carry the straight haired gene are known as Heterozygous LaPerms.
Homozygous LaPerms do not carry the straight coated gene and will produce only
rex coated offspring. There are no differences in appearance between Homozygous
and Heterozygous LaPerms. The eventual aim of the LaPerm breeding programme is
to produce Homozygous LaPerms but while the breed is still developing it is
important to maintain breeding with both Homozygous and Heterozygous LaPerms.
The majority of matings are
most likely to be between LaPerm x LaPerm, LaPerm x Approved Outcross Breed and
LaPerm x LaPerm Variant. Matings between LaPerm Variant x LaPerm Variant cannot
produce LaPerms but the offspring of such matings may be registered as LaPerm
Variants.
Breeders should ensure, to
the best of their knowledge, that any LaPerms or LaPerm Variants from which they
breed are of sound temperament, free from any hereditary defects, (including
those listed in the GCCF Standard of Points), and conform as closely as possible
to the Standard of Points, (excluding the coat description where variants are
concerned).
All cats used for
outcrossing should be thoroughly researched, of sound temperament and free from
any hereditary defects. Blood type B appears to be very rare in the LaPerm. It
is recommended that cats with blood type B should not be introduced into the
LaPerm breeding programme in order to prevent the occurrence of problems with
blood type incompatibility.
LaPerms are not compatible
with Cornish, Devon or Selkirk Rex. Such matings are therefore highly
undesirable. The product of such matings will be registered on the Reference
Register and cannot be considered to be LaPerms or LaPerm Variants. They cannot
be used in any Rex breeding programme and should be placed on the non-active
register. It is considered to be in the best interest of the LaPerm breed to
keep it entirely separate from other incompatible Rex mutations.
Under no circumstances
should any cat with Sphynx ancestry be introduced into the LaPerm breed.
Selection for hairlessness contradicts the coat quality requirements for Rex
cats. The product of any matings between Sphynx and LaPerms will be registered
on the Reference Register. They cannot be considered to be variants nor be used
in any LaPerm breeding programme and should be placed on the non-active
register.
Breeders shall ensure that
any LaPerms or LaPerm Variants from which they breed shall be registered with
the GCCF in accordance with the Rules in force at the time. It is recommended
that the progeny from any matings that are not required for LaPerm breeding,
should be placed on the Non-Active Register, to avoid the introduction of the
LaPerm gene into other varieties of pedigree cats.
Breeds which have been approved for use in
outcrossing are:
Somali, Abyssinian, Ocicat,
Asian Shorthair, Tiffanie, Burmese (European Burmese in the case of imported
cats) and Tonkinese, plus variants of these breeds.
Chinchillas are permitted at
the fourth and fifth generations of LaPerm pedigrees if they precede Asian group
cats because chinchillas are permitted to appear in the background of Asian
group cat pedigrees
All other breeds are listed
as non-approved.
Domestic longhairs and
shorthairs were used in the development of the breed in the USA and may appear
in the background of the pedigrees of imported cats. Siamese, Balinese, Oriental
SH and Oriental LH may also be seen in the background of pedigrees where
outcrosses to these breeds were carried out before the LaPerm’s promotion to
Provisional status.
Breeders will be encouraged
to take advantage of any relevant official scheme, which may be devised by the
BAC to test the soundness of the LaPerm breed.