Shaw's
Jird |
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| 'Breeding
Shaw's Jirds' and 'Hand Rearing'
articles also available.
Introduction Shaw's Jird
- Meriones shawi looks like a giant Mongolian Gerbil Meriones
unguiculatus, but unlike its more common relative it is less likely
to bite, considerably slower and therefore easier to handle. Their
natural habitat is coastal desert areas, which can be found in North
Africa and the Middle East. Deep tunnels are excavated in the deep clay
where chambers are added for food storage and breeding. Jirds are
still a very uncommon pet, part of the reason why may be their
unwillingness to breed prolifically without some complication. I had
trouble obtaining my jirds, so much so that I had to purchase three (2
female, 1 male) on a holiday to Cornwall when I live in Portsmouth. You
can expect to pay approximately £5 to £15 each depending on where you
buy them. As far as I am aware there is only one colour available (shown above), although different shades of this colour are seen. A mutation is available where a white spot is displayed on the top of the head. Feeding Your jirds
diet should primarily consist of a good quality rodent mix, which can be
bought commercially or mixed yourself. Alternatively you could use a
standard mix and add your own ingredients. A base mix of 'Harry Hamster'
food is a good start to which you can add cockatiel seed and scotch
oats. This appears to be a favourite, although all jirds have their
preferred taste and the mixture can be adjusted accordingly. The mix
should be available to the jirds all the time in a heavy ceramic pot, if
this pot is not placed on shelf or nest box in the tank it will soon be
buried. Jirds enjoy
a large range of food as well as the mix, these may include apple,
tomato, lettuce but not much it contains little nutritional value and
can cause diarrhoea, egg has a high calcium content, dried or toasted
bread, but dandelion, Kellogg's™ Shreddies™ and Broccoli (high in
iron) seems to be a favourite. Experience have shown that our jirds are
not keen on cucumber, banana or dog biscuit, but as described above each
jird has it's own tastes. Some form of extra protein should be
given (especially when pregnant), it can be live foods such as
mealworms, complete dry cat food or small amounts of chicken. Dry cat is
the easiest and least messy option and is advised. Water should
also be available all the time and should be dispensed from a water
bottle hung from the tank roof or lid. A hanger for the bottle can be
made from mesh or a wire coat hanger. Housing There are
two main types of housing for jirds, firstly their is the wire cage and
secondly glass tanks that are much more suitable. This is not just my
opinion but also a fact. As described in the 'Introduction' jirds are
burrowing rodents and that situation should be simulated to the best of
our ability in their housing. Not only this, but tanks are usually
cheaper, easier to clean, largely escape proof, and better at contain
the mess that the jirds make than wire cages. A well fitting mesh lid
will be needed to provide good ventilation; this is one advantage the
cage has over the tank. The next
subject to deal with is size and there is one main rule to follow; the
bigger the better. A 36" x 12" x 15" is probably the
minimum size for a trio of jirds but would be ideal for a single or pair
of jirds. If the tank cannot be expanded outwards and extension upwards
may be the answer; a wire cage may be attached to the mesh lid to
provide addition space. If the cage is made the full size of the tank
the floor space may be doubled without using up any more 'shelf' space. The tank
floor should be covered to a depth of about a third of the tanks height
with a mixture of wood shavings and hay or straw, the hay binds the
shavings making any burrow they excavate more permanent. My jirds
destroy a cardboard box within a couple of hours; this appears to be a
favourite past time. As well as boxes, cardboard tubes are used to chew
and run through. Guttering could be used as a more enduring toy as it
takes longer to chew than cardboard, but they will get through it. Branches
from non-toxic trees such as the willow, pear or apple can be added for
climbing and for them to gnaw on (without this their teeth may become
over grown, as with all rodents). Branches should be baked in the oven
for about ten minutes to kill any bugs that are on them; obvious dirt
should also be cleaned of before being given to the animals. A nest box
is a must; jirds can be startled quite easily by new sounds and people
and will need somewhere to hide. It should not be too large (as they may
feel insecure) but the again not too small (for the obvious reason of
space). It is definitely needed when breeding; see 'Breeding'
for more details. Breeding There is
much literature publicising the difficulty in breeding Shaw's jirds. I
have found that in a majority of cases this is not true. As discussed
in the behaviour section the female can be aggressive towards the male
and other females, this can cause a set back but it can be overcome with
some time and a lot of patience. I cannot
give a exact age to when jirds reach sexual maturity but other articles
on this matter suggest an age of around 3 months for females and 5 weeks
for males. My first trio were introduced at 6 weeks of age and the first
birth occurred 8 weeks later. This means that mating must have occurred
11 weeks (about 3 months) of age. This supports the above approximation. When the
jirds are together either in a pair or trio, mating should occur within
three weeks if mature. In the wild a male jird may mate up to 200 times
in a single day. Mating can usually be observed so a note of the date
can be made as to predict the date of birth. This will be about 21 days
after conception. The young
are born blind and hairless, similar to many other rodents, but develop
relatively quickly. They show pigment in the skin at around 2-3 days and
show fur at around 5-7 days. They should
be weaned at around 5 weeks, but will have been eating solids since a
few days before their eyes open at around 14 days. Behaviour Jirds should be kept as either a
pair of males or a single female. Females are more aggressive and
territorial than male and will usually fight when adult. I had kept
a trio of 1 male and 2 females that had grown up together for a while
but when the females had their first litter they began to fight and had
to be separated. Keeping a mixed pair may be attempted with the use of a
very large tank (6ft or larger) and many nest boxes and even then the
result is not certain. It is very
hard to re-introduce jirds once they have been separated, but it can be
tried. When trying to introduce a male and female, put the female in the
male’s tank (first remove any boxes, furnishments etc) so she is the
trespasser, this may reduce aggression on her part. Separate them if
they start to fight. You can also try to scent both of them with an
identical fragrance e.g. vanilla essence and then try introducing them
again. When trying to introduce to animals of the same sex put them in a
neutral tank at the same time, again you could try making them smell the
same. I don't know whether the fragrencing works because they smell the
same or because they get confused with the new smell but it worked with
my mice. I have found
that jirds are active both day and night making them neither exclusively
nocturnal of diurnal. They do not like being woken-up and may bite if
disturbed. |
| By Matthew Wright |