It is important to select healthy and fit parents. Avoid using
wheezing or snuffly rats and rats with obvious defects. If the rat
is temporarily unwell from something minor, give the animal plenty
of time to recover before choosing to mate from it and even then
only consider breeding from if there really is no other choice available
and the rat has made a complete recovery.
Temperament is a very important factor in breeding. If bad tempered
or biting rats are used then this is likely to produce bad tempered
offspring as temperament problems can be hereditary, so choose a
pair of friendly, pet-able animals.
Age is necessary to consider. It is recommended to choose a doe
between 5 and 7 months of age for her first litter. The older the
doe is, the more problems she may encounter with pregnancy or birth.
It is advised to never mating a doe who is over a year old for their
first litter. If you intend to have two litters from the one doe
it is better to start her early in order to give her some resting
time in between the litters.
The doe should be of a good size approximately 300gms. if she is
too overweight then she may not get pregnant at all. In the other
respect an underweight or scrawny doe may not cope well with the
stress of pregnancy and looking after her litter so the doe needs
to be fit.
Bucks should be of a good mature size approximately 500gms. and
can father litters up to about 18 months old. It is recommended
to start using a stud buck between 6 and 12 months of age. After
a year old you may start to experience sterility problems. You can
use a younger buck but the full maturity and temperament may not
have developed until about 6 months old.
Some varieties do suffer from breeding and other health problems. It is worth checking with an experienced breeder of that variety before you start and to also make sure that there are no inherent problems in your rats background by discussing with their breeder(s) also.
Breeding for Show
Breeding for health and temperament
Breeding for health and temperament is not really much different from the above, but the breeder will be totally focussed on improving the health and temperament each generation as priority and general conformation, markings and colours become less important to them as they quite often do not show in varieties classes although many breeders focussing on health and temperament do very well at shows in both pet and variety classes. Breeders who are focussed on health and temperament will keep in regular contact with the owners of all their rats and will want to know details of health and temperament traits and cause of death and age when the rat finally passes on.
Mating
Does have a four or five day oestrus cycle. This means that every
4/5 days the doe will become receptive to mating with the buck.
When she is in heat she will tend to be very jumpy and excitable.
If she lives with other females you may notice that they will mock
mate her. The majority of does come into heat in the evening which
lasts for approximately 12 hours. If you touch the on her flanks
she will assume a 'frozen' stance often vibrating her whole body
and wiggling her ears which can appear quite comical! If you examine
her vagina when she is on heat the area will probably show as a
mauve colour and the entrance will be wide open as opposed to a
normal almost unnoticeable entrance of a pale pink colour. This
is when your doe is ready to mate.
There are two ways to go about the process of mating. Firstly the
method which most breeders use is to place the doe with the buck
when she is in heat and leave them together for their night of passion
(Or a few passionate hours if you choose). The other method is to
leave the buck with the doe for at least 10 days (to cover 2 oestrus
cycles) and then separate them. Some people only remove the doe
from the buck when she starts to appear pregnant or a few days before
the birth.
If your buck lives with other males then it is suggested using the
first method as it allows you to re-introduce your buck back with
his cage mates a lot easier. The other bucks will sometimes attack
the lucky male because they can smell the female scent on him, and
fights can turn quite nasty. If you encounter problems a trick that
is pretty successful is to dot some vanilla essence onto all the
bucks chests which will help to confuse their own odours, if this
does not work then remove them into a neutral environment whilst
you clean their cage, put some favourite food in and then return
them.
If you are considering that you would like to leave the buck in
with the doe for longer, bear in mind that although the buck will
often make a good father, the doe will come into heat immediately
after giving birth (Post partum oestrus) if the buck succeeds in
getting her pregnant the second litter will often be miscarried
or sickly and can cause extreme stress to the does health while
she is nursing the first litter. Also not only are the parents likely
to mate but the maturing kitten does may also become pregnant, with
obvious results, so we would strongly suggest you separate the buck
from the doe before the birth to avoid any possible problems.
After mating your doe you will need to keep an eye on her to see
if she comes back into heat. If she does then the mating has failed
to be successful and you will need to repeat the process. If she
does not come back into heat after about 12 days you can assume
she is probably pregnant.
Gestation/Pregnancy
The gestation period lasts 21 to 23 days after mating. The majority
of does give birth on day 22 and a half which will be the morning
of the 23rd day. By about two weeks you will start to notice the
doe becoming fatter and taking on a pear shaped appearance. In the
last few days some look like they have swallowed a tennis ball and
almost roll rather than walk!! Remove obstacles or anything she
may fall off from her surroundings.
During the pregnancy you will need to keep the doe fairly quiet.
She will still need her exercise, but be careful when you are handling
her especially as she becomes larger. Many does suffer from a personality
change during the pregnancy, even some of my most submissive gentle
companions have turned into monsters at this time becoming grumpy
and aggressive and will often bully their cage mates because a pregnant
doe will try to rise to alpha in their cage during pregnancy. All
this is due to the change in hormones at this time and you will
find that after rearing her litter she should regain her former
composure.
Do not overfeed the doe during pregnancy, she should be fed her
normal diet during this time. You can add vitamin and mineral supplements
if you wish. Make sure that she has plenty of good food with plenty
of protein after the kittens are born though. Although all the extra
protein would usually cause spottiness, this is one time when it
is of benefit.
It is generally not recommended to allow littering more than one
doe together, as although they will not intentionally injure each
others offspring, they may try to steal them resulting in a 'tug
of war' situation which can damage the kittens delicate skin. There
have been cases where this continued until all the babies had died.
You can however leave mum with her cage mates or neutered males
for the birth as they should not hurt the babies and may in fact
help with their care but most does do prefer to be left alone. Be
aware however that the mother tends to becomes very protective over
her new offspring and this may cause some stress and aggravation
if another rat is left in the cage. Make sure that if you wish to
keep her in with other rats that the doe has plenty room to allow
her privacy from her cage mates.
The general advice would be to give the doe her own nursery to stop
the risk of any problems arising with other rats at all.
A few days before she is due to give birth you will need to separate
her into the nursery. Large plastic tanks such as Savic rody or
Ferplast duna are ideal, but a single level cage with narrow bar
spacing would also do. Give her a moderate amount of bedding material
food and water.
In the majority of cases the doe will give birth and raise her
litter without any need for assistance, but it is worth being aware
of any problems which may occur.
Sometimes the doe may miscarry or re absorb her litter. It is normal
if there are any dead or sickly kittens born that she may eat them.
This is a natural reaction. Very rarely will a doe eat healthy kittens,
but if she is going to do this it is likely to happen in the first
few days. This is nearly always caused by stress of some kind for
example, the presence of a cat or dog or too much disturbance of
the litter.
Occasionally the doe may suffer from an obstructed birth and she
may go into shock and in extreme cases, die from the shock or haemorrhaging.
In this instance a caesarean section may be possible to save her
life if it is done soon enough before shock or too much blood loss
takes place, but she will be unable to nurse any surviving babies
so in many cases there will be very little you can do.
Once the birth process begins and the doe starts to discharge, if
there are no babies delivered within four hours then there may be
a problem. This may be due to a baby being stuck in the birth canal
and massaging the mothers abdomen gently may help to release the
problem kitten. Sometimes it is possible to pull the baby out by
using forceps and the birth can continue as normal. The first baby
is usually the hardest for the mother to pass. Oxytocin may help
in this case, but it doesn't always work and there may be many other
reasons why labour is not progressing normally.
Occasionally a doe may spot blood in the last couple of days leading
up to the birth and this can be an indication something is wrong,
but in some cases this can be aborting the odd kitten and they have
then gone on to produce a healthy litter so it is best to wait she
is due to give birth and deal with any problems if they arise. If
you are in any doubt over the well being of your doe it is worth
contact your vet and/or other experienced breeders for their opinion.
It is always better to be safe than sorry.
If there has been no sign of the litter by day 25 there may also
be a problem and at this stage they may produce a still born litter
or none at all. If the mother survives with unborn foetuses often
she will reabsorb them naturally but it is worth treating her with
a course of antibiotics to prevent any infection occurring.
In rare cases you may find yourself with and orphaned litter, perhaps
due to the mother neglecting or abandoning her kittens or if the
mother falls sick or at worst dies. For further information on orphaned
rats and hand rearing see below.
Most breeders these days use the internet as a main source of advertising upcoming litters. Many studs and ratteries have their own websites containing planned litters pages or they talk about their breeding plans on discussion forums and this tends to aid in building up a waiting list for any surplus kittens you may have. There are also some forums on the internet you can advertise your kittens - the NFRS has a members forum where members can advertise their kittens to other members. The NFRS also has a breeders register where as a member you can be listed as a breeder and this helps potential owners track you down as well. Reputable breeders do not breed more than they can comfortably find homes for. NFRS members can also advertise rats at the NFRS shows on a notice board.
It may be a good idea to produce a care sheet yourself providing your details and details of some good literature which provides information on keeping pet rats. If you contact the NFRS they should be able to provide you with some NFRS care sheets and membership forms for you to copy to give to new owners of your rats.
It is not recommended to sell your kittens to pet shops as you will not get to 'vet' the new owners personally and the majority of pet shops will not give out good advice on how to keep the rats. Many pet shops source their rats from 'rodent farms' anyway and are not interested in small scale breeders rats as they cannot get the kittens on 'sale or return' this way usually.
It may be a good idea to advertise your kittens in your local
vets surgery or maybe locally distributed papers or pet shops. No
kittens should go to a new home until they are fully weaned and
at least 6 weeks old. You often see very young small shivering rats
in pet shops (some as young as 3 weeks old), and puts a great deal
of strain of the young rat which does not have enough stamina to
cope with the new harsh environment without mum. Most are brought
by unsuspecting members of the public who within the week have a
dying or sickly rat on their hands.
When selling privately many people will wish to come round and see
the rats, this is an ideal opportunity for you to have a chance
to 'vet' the new owner and for them to 'vet' your rats. Other methods
include chatting to the prospective owners on the phone or via e-mail
discussion and some breeders also use an 'application form' process,
which can weed out the potential owners who may be wasting your
time or be completely unsuitable for your rats.
Rats should not be sold singularly as they are communal creatures
and no matter how much somebody promises to play with their new
rat it will never be as happy as if it is with its own kind (and
own sex!!).
When selling a rat the price is up to you but most pet owners expect
to pay between £7 to £15 per rat. The NFRS states a guideline of
a minimum is £7.00 in their General
Guidelines for selling rat kittens. So this may give you an
idea of how much to aim for. If anybody wants to buy the whole litter
or a large number of kittens, be very wary as they probably want
them for snake food rather than as pets.
When handing over you rats ensure you provide the new owner with
your details, so that if they have any questions they can contact
you. Many breeders also provide details of the background of my
rats in the form of a 'pedigree' or family tree, and this can be
particularly useful if the rat is for showing or breeding.
When selling to any juvenile make sure that they have permission
from their parents and that you speak to them before agreeing to
sell the rats. Sometimes children try to buy a rat with no conception
of housing or feeding the poor thing, and you will end up with an
angry parent on your doorstep!!
Always make sure your new owner knows how to house, handle and feed
the new rats, you can advise that they give the new babies some
bread and milk to begin with and to allow the new rat a day or two
to settle in before being handled. It will take time for the new
owner and baby rats to get used to each other as they are a little
nervous of each other to begin with!
We would wish you the best of luck with breeding the fancy rat.
The experience can be very enjoyable and exciting to watch. Please
contact the NFRS if you
would like any more information regarding breeding and genetics.
For more information on breeding and keeping fancy rats, the following sources will prove useful:
The National Fancy Rat Society
For details on membership contact:
NFRS, PO Box 24207, London SE9 5ZF
Please send a SAE with all correspondence if you would like a reply.
Pro-Rata
The National Fancy Rat Societies magazine. These are excellent sources
of information on all aspects of rat keeping and showing. Back issues
are available from The Membership
Coordinator.
The Proper Care of Fancy Rats
By Nick Mays. Published by T.F.H. Publications. ISBN: 0-86622-340-1
Available from pet shops and book shops. Currently out of print,
but you may find in some specialist book shops and some pet shops.
Rat Health Care
By Debbie Ducommum
Available from NFRS Sales Officer
at £4.00. (Cheques should be made payable to the NFRS)