Fertility Of Your Queen
Very few people who jumped
their pets has any thought of managing fertility of their
If you have a girl and decided that she’s
not ready to carry kittens yet, (maybe she’s still a kitten herself!)
what will you do if she starts calling? Will you simply lock her up and
let it subsides till the next round comes?
okay for the first 3 calls. But never ever let her call more than 3
times without mating her. Cats are induced ovulators. It means they
ovulate when successful mating occurs. It means they only release their
mature female eggs until after they are mated.
if you let your queen to call more than 3 times without mating, you
will increase the chances of cysts forming in her ovaries. And a
potential hormone problems later on. When the queen is not mated for
too many estrous cycles, the eggs will accumulate until the next
estrus. That is why managing fertility is very important.
if you finally mated her with an entire male, you risk her carrying too
large a litter. There’s this one cat that even tries to carry 15
kittens in her womb all at once! But none of the kittens survives. You
don’t want that to happen to your queen do you?
possible scenario is the result of ‘old’ eggs. Older eggs from previous
cycle can be fertilized in the next, resulting a congenitally defect
kittens such as
• Lack of skulls
• Born premature
• Gross hernias
• Spina bifida
girls are a frequent caller. You can estimate your queens’ natural call
frequency by allowing her to call the first call out, but make sure she
is secured (no male contact) until the second call comes.
is very helpful for you to plan for her future breeding. If she calls
more frequently than every 4 weeks, then you should do something about
it. Managing fertility can be done mainly in three ways:
1. Hormone use
2. Mechanical stimulation
3. The service of the vasectomised male
Managing Fertility Through Hormone Use
You can ask your vet about a hormone treatment.
It’s a chemical
progesterone-like hormones or estrogen derivative that can be
administered orally or by injection. It tampers with the estrous cycle
by stepping it back to pre-estrus stage.
Some treatments can last for up to two months,
some may be longer. I think it depends on your queens’ natural call
method is only recommended for occasional use. As the treatment can
reverse the estrus temporarily, I’m afraid it might have some side
effects if used one too many times.
However, it might be
useful if you have a nursing queen of say, a 2 days or 3 weeks old
kittens that unexpectedly come into heat (so soon! I know, but it
happens). Her milk supply might drop a little, but it is far better
than her abandoning her kittens altogether demanding to be let out.
you want to mate your girl after several uses of hormones, you’d better
let her shed her old eggs first before attempting a real mating. It can
be done by a mechanical mating or by a vasectomised male.
use of hormone treatment can cause some side effects such as diabetes.
I would recommend managing fertility through mechanical mating rather
than hormone treatment. But it is best for your girl if there’s a
vasectomised boy for her.
Managing fertility this way should be done with
caution. You or your
cat might get hurt in the process. The mechanical stimulation can be
done by either a glass rod, or a cotton bud used to stimulate the
vagina to mimic mating. It is preferably to let your vet do this for
To make sure she ovulates, it has to be done at
least 5 times as this is the average number of mating to ensure
ovulations. I would suggest you let the vet do this for you. Your queen
can be left at the vet for a few days.
To me, this is the best way to manage your queens
only difference between a vasectomised male and whole male is that they
will not ejaculate sperms. The connection between the testicle (which
produce sperms) and penis is severed so that new sperm cannot pass
After vasectomy is performed, allow the boy go
without ladies for a period of six weeks. Just to be sure the sperms
past the severed section will not survive long enough to impregnate any
of his harem.
Successful mating with a vasectomised male
will cause ovulation but without the burden of unplanned litter.
Although, your queen might show some hormonal changes that mimic
pregnancy, she’s not. But she won’t call again until the next 5-8
weeks. It depends on individual queen.
Having your own
vasectomised male is a real treasure. Queens are pleasant to live with,
(no more yowling) they are calm, coats are lustrous, they look ready
for show anytime, and most important of all, they are happy. :)
Reference : BREEDING CATS: A Practical Guide,
revised edition by Truda M Straede. Dr. Truda is the breed founder of
Australian Mist- the first breed developed entirely in Australia.
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