crazy odds

[lilbit]

out of 2 litters 12 in the first 6 in the second 3.15 from 2 different does same buck

[Rhasputin]

What's crazy about it?

[lilbit]

i need boys lol

[Rhasputin]

Haha. You know your lighting can affect your male to female ratio, right?

[bad-one]

Haha. You know your lighting can affect your male to female ratio, right?

Never heard of that one

I wish I got those sex ratios, mine are usually 50/50 or 60/40 when it comes to genders.. Although, I prefer raising males as feeders since they seem to grow faster.. but I need more girls! (and why are my males always cuter than my females?! <--- drives me nuts when it comes to holdbacks)

[Rhasputin]

It's true. Different sources of lighting will affect the ratio of males to females. Natural light produces 50%m/50%f, Flourescent lighting produces 30%m/70%f, and normal yellow lighting produces 70%m/30%f


It's not 100% accurate, but it averages out pretty damn close. But takes a month or two to set in. Any other light sources need to be blocked out, as well.

[tomfromtheshade]

It's true. Different sources of lighting will affect the ratio of males to females. Natural light produces 50%m/50%f, Flourescent lighting produces 30%m/70%f, and normal yellow lighting produces 70%m/30%f


It's not 100% accurate, but it averages out pretty damn close. But takes a month or two to set in. Any other light sources need to be blocked out, as well.

I would have to say that this is 100% false. Gender is determined by your male as in all mammals. His sperm carries the information for the sex of the baby. Lighting has NOTHING to due with the genetic information on sperm. Sperm NEVER see the light of day.

Its a crap shoot. I have had litters of all males. I have never had an all female litter, but it will probably happen sooner or later.

The sex of your baby rats is a roll of the dice.

Rats live in places on this planet under all different lighting conditions and they do perfectly well. Total darkness or 24 hour light are probably the only two conditions that affect rat breeding and they don't change the sex of the babies. They may however influence how often your animals breed, but that is yet to be determined.

[Rhasputin]

It's a true, studied phenomenon.

I'll try to find links to the published papers. I think they're on JAX.

[snakesRkewl]

I have had one litter of all females and litter of all males in over 100 litters, lol, it don't happen too often.

I also don't believe light has anything to do with male to female ratios in rats, waiting for proof

[Rhasputin]

I know there's a study paper out there somewhere, but I can't seem to find it.
But if you ask the mouse comunity, it's a really hot topic.

Some people swear by it, and others say it's rubbish.