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how to mark and identify mice/rats - (Oct/26/2009 )

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Why not just ear-tag them? Be careful though, if they're not on properly (away from the edge of the ear), they tend to fall off.

-Say Chi Sin Lo-

you do earrings and paper to mark number to each











dich thuat | du hoc anh | hoc bong du hoc

-girlxinh-

Personally I'm not a fan of the ear tags, as they can tear out. At best you get a little mouse with a big, awkward looking tag flopping around.

We recently tried the mouse tattoo kit in my lab with great success. So far we've only tried doing mouse toes.... waiting to get committee approval for mouse ears :rolleyes:
But I think inking ears will be a further improvement over toes, since you won't have to pick up each animal and examine its feet.

-Fungus_Dreams-

I don't like to use ear tags, it feels cruel. I usually separate them accordingly.
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-Habbakuk-

i've tried by staining with picric acid. its supposed to be in powder form. But the one I have is in solution. What I did was I dip cotton bud into the picric acid, and stain the mice according to my number coding (right front hand = 1, left front hand = 2, right flank = 3, left flank = 4, head =5). I tried this last 2 weeks, and the dye still there and all the mice are ok (no sign of abnormality). just make sure they don't lick the dye before the dye dried. you can apply it by holding the mice by tail.

hope it helps! =)

-adibah-

adibah on Tue Apr 30 09:07:19 2013 said:


i've tried by staining with picric acid. its supposed to be in powder form. But the one I have is in solution. What I did was I dip cotton bud into the picric acid, and stain the mice according to my number coding (right front hand = 1, left front hand = 2, right flank = 3, left flank = 4, head =5). I tried this last 2 weeks, and the dye still there and all the mice are ok (no sign of abnormality). just make sure they don't lick the dye before the dye dried. you can apply it by holding the mice by tail.

hope it helps! =)

Isn't this painful for the rodents as you "etch" the skin?
and powdery picric acid (i.e. dry) is an explosive, so you should be extremely carefully...

-hobglobin-

hobglobin on Wed May 1 14:17:55 2013 said:


adibah on Tue Apr 30 09:07:19 2013 said:


i've tried by staining with picric acid. its supposed to be in powder form. But the one I have is in solution. What I did was I dip cotton bud into the picric acid, and stain the mice according to my number coding (right front hand = 1, left front hand = 2, right flank = 3, left flank = 4, head =5). I tried this last 2 weeks, and the dye still there and all the mice are ok (no sign of abnormality). just make sure they don't lick the dye before the dye dried. you can apply it by holding the mice by tail.

hope it helps! =)

Isn't this painful for the rodents as you "etch" the skin?
and powdery picric acid (i.e. dry) is an explosive, so you should be extremely carefully...


the one I use is solution based. and may I know what do you mean by 'etch' the skin? I simply stain the hair with solution. the same concept when u dye your hair. i used it on ICR mice. the solution did not cause the hair to fall off or give any scar. but i don't guarantee the same thing if it is on nude mice.

sorry If i cause misunderstanding

-adibah-

adibah on Wed May 8 03:33:23 2013 said:


hobglobin on Wed May 1 14:17:55 2013 said:


adibah on Tue Apr 30 09:07:19 2013 said:


i've tried by staining with picric acid. its supposed to be in powder form. But the one I have is in solution. What I did was I dip cotton bud into the picric acid, and stain the mice according to my number coding (right front hand = 1, left front hand = 2, right flank = 3, left flank = 4, head =5). I tried this last 2 weeks, and the dye still there and all the mice are ok (no sign of abnormality). just make sure they don't lick the dye before the dye dried. you can apply it by holding the mice by tail.

hope it helps! =)

Isn't this painful for the rodents as you "etch" the skin?
and powdery picric acid (i.e. dry) is an explosive, so you should be extremely carefully...


the one I use is solution based. and may I know what do you mean by 'etch' the skin? I simply stain the hair with solution. the same concept when u dye your hair. i used it on ICR mice. the solution did not cause the hair to fall off or give any scar. but i don't guarantee the same thing if it is on nude mice.

sorry If i cause misunderstanding

I mentioned it because you wrote "its supposed to be in powder form". I'd really avoid this and use only a solution containing >30% water.
And with etching I meant that it's a quite strong acid and wondered if the marking is an acid burn, but actually it is not (luckily).

-hobglobin-

hobglobin on Wed May 8 15:48:25 2013 said:


adibah on Wed May 8 03:33:23 2013 said:


hobglobin on Wed May 1 14:17:55 2013 said:


adibah on Tue Apr 30 09:07:19 2013 said:


i've tried by staining with picric acid. its supposed to be in powder form. But the one I have is in solution. What I did was I dip cotton bud into the picric acid, and stain the mice according to my number coding (right front hand = 1, left front hand = 2, right flank = 3, left flank = 4, head =5). I tried this last 2 weeks, and the dye still there and all the mice are ok (no sign of abnormality). just make sure they don't lick the dye before the dye dried. you can apply it by holding the mice by tail.

hope it helps! =)

Isn't this painful for the rodents as you "etch" the skin?
and powdery picric acid (i.e. dry) is an explosive, so you should be extremely carefully...


the one I use is solution based. and may I know what do you mean by 'etch' the skin? I simply stain the hair with solution. the same concept when u dye your hair. i used it on ICR mice. the solution did not cause the hair to fall off or give any scar. but i don't guarantee the same thing if it is on nude mice.

sorry If i cause misunderstanding

I mentioned it because you wrote "its supposed to be in powder form". I'd really avoid this and use only a solution containing >30% water.
And with etching I meant that it's a quite strong acid and wondered if the marking is an acid burn, but actually it is not (luckily).


thank you for your question. you've made me understand better of the things i'm doing

-adibah-

We use ear punching in our facility. It's easiest to do when the mice are just weaned (between 3-4 weeks old). On the contrary to what fungus dreams said, I would try to accurately punch the numbers 1-99 for those mice you plan to use in breeding, or for future cage combining/rearrangement. It depends on your research.

-notjustalabtech-
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