im confused again.

trulytortoises · 03-10-2009, 03:44 PM

Hi all, you probably remember me asking about this in the past but i cant for the love of it, find the post or thread explaining about it. Im wanting to work out the jackson ratio. (weight divided by length x length x length)
so weight is 64g and length is 7cm and this equals 448 so i dont understand how this can be any of these below. Im totally confused!!!!

Jackson ratio of

less than 0.16: An underweight tortoise needing special care.
of 0.17: Light for hibernation, unless an active male, or an animal with unusually flared scutes.
of 0.19: Normal, and safe to hibernate
of 0.21: A very good weight, ideal condition.
of above 0.23: Possibly too heavy, check for puffiness (water retention)

**egyptiandan64** · 03-10-2009, 03:50 PM

It's fairly easy

you divide the 64 by 448 and you get 0.14. This is much to low to hibernate and your going to need to keep that one up this winter and feed well.

Danny

trulytortoises · 03-10-2009, 04:05 PM

ahh so thats how, i couldn't remember, thank u

Kirkie · 03-10-2009, 04:41 PM

Erm is this the BCG calculation?

It's weight (Grams) divided by length times length times length so your calculation is wrong, 7x7x7 is 343 so

64/343 = 0.186 so nearing the "safe to hibernate" mark.

Are you sure the tortoise is dead on 7 centimetres, it should be calculated to the decimal point 7.1, 7.2 etc

**egyptiandan64** · 03-10-2009, 04:46 PM

Yup it was wrong Dave, I didn't even check it

.

Danny

Kirkie · 03-10-2009, 04:50 PM

Beth and Danny see me after class, extra maths homework all round.

**Alan1** · 03-10-2009, 04:55 PM

.. meanwhile go and sit in the corner

**egyptiandan64** · 03-10-2009, 05:44 PM

With my pointy hat

Hopefully I won't get a caning later

Danny

03-10-2009, 03:44 PM	#1
trulytortoises Member Hatchling Join Date: Jan 2009 Location: Newcastle Upon Tyne Posts: 634	im confused again. Hi all, you probably remember me asking about this in the past but i cant for the love of it, find the post or thread explaining about it. Im wanting to work out the jackson ratio. (weight divided by length x length x length) so weight is 64g and length is 7cm and this equals 448 so i dont understand how this can be any of these below. Im totally confused!!!! Jackson ratio of less than 0.16: An underweight tortoise needing special care. of 0.17: Light for hibernation, unless an active male, or an animal with unusually flared scutes. of 0.19: Normal, and safe to hibernate of 0.21: A very good weight, ideal condition. of above 0.23: Possibly too heavy, check for puffiness (water retention) __________________ ~Beth~ 1.1.0- THB- williow(f) & cavalli(m)

03-10-2009, 03:50 PM	#2
egyptiandan64 Super Moderator Adult Join Date: Jun 2006 Location: USA Posts: 14,171	It's fairly easy you divide the 64 by 448 and you get 0.14. This is much to low to hibernate and your going to need to keep that one up this winter and feed well. Danny __________________

03-10-2009, 04:05 PM	#3
trulytortoises Member Hatchling Join Date: Jan 2009 Location: Newcastle Upon Tyne Posts: 634	ahh so thats how, i couldn't remember, thank u __________________ ~Beth~ 1.1.0- THB- williow(f) & cavalli(m)

03-10-2009, 04:41 PM	#4
Kirkie Senior Member Adult Join Date: Mar 2008 Posts: 4,887	Erm is this the BCG calculation? It's weight (Grams) divided by length times length times length so your calculation is wrong, 7x7x7 is 343 so 64/343 = 0.186 so nearing the "safe to hibernate" mark. Are you sure the tortoise is dead on 7 centimetres, it should be calculated to the decimal point 7.1, 7.2 etc Last edited by Kirkie; 03-10-2009 at 04:45 PM.

03-10-2009, 04:46 PM	#5
egyptiandan64 Super Moderator Adult Join Date: Jun 2006 Location: USA Posts: 14,171	Yup it was wrong Dave, I didn't even check it . Danny __________________

03-10-2009, 04:50 PM	#6
Kirkie Senior Member Adult Join Date: Mar 2008 Posts: 4,887	Beth and Danny see me after class, extra maths homework all round.

03-10-2009, 04:55 PM	#7
Alan1 Super Moderator Adult Join Date: Dec 2008 Location: Sunny Scotland Posts: 21,512	.. meanwhile go and sit in the corner

03-10-2009, 05:44 PM	#8
egyptiandan64 Super Moderator Adult Join Date: Jun 2006 Location: USA Posts: 14,171	With my pointy hat Hopefully I won't get a caning later Danny __________________

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