Jackson Ratio for Hatchling Tortoises

[TestudoGeek]

Are any of you familiar with this Ratio for Hatchling Tortoise growth? I've been monitoring my hermann's size & weight and comparing it to this chart, and it matches like clockwork.

Here´s the "formula":

And here's the Data on my Testudo Hermanni Hermanni:

06 Nov 07 > 16 weeks old > 30 grams > 5 cm > 1,95 inches
12 Nov 07 > 17 weeks old > 32 grams> 5 cm > 1,95 inches
19 Nov 07 > 18 weeks old > 34 grams> -- cm > -- inches
26 Nov 07 > 19 weeks old > 36 grams> 5,3 cm > 2,07 inches
04 Dec 07 > 20 weeks old > 38 grams> 5,5 cm > 2,15 inches
10 Dec 07 > 21 weeks old > 40 grams> 5,5 cm > 2,15 inches
17 Dec 07 > 22 weeks old > 42 grams> 5,7 cm > 2,22 inches
26 Dec 07 > 23 weeks old > 44 grams> 6 cm > 2,34

Is anybody else keeping weekly track of their small torts out there?

 

[Ozric]

Hi there! Yes I keep track of my torts weights and compare against the chart. One of them is always a fair bit under and the others are very close to the 'target' weight. What i've found is that weights can go down as well as up and in the short term its not necessarily a problem.

 

[Crazy1]

I too use the scale for my Greeks. Will base hibernation on it next year if all goes right.

 

[Crazy1]

Duh, I must have been asleep when I read this post. I didn't even realize this was for hatchlings. Thanks TestudoGeek. I'll be putting this to good use now.

 

[Coldliz]

Anyone know of a chart like this for Sulcatas?

 

[TestudoGeek]

You can download a PDF version of this ratio for adult Testudos over at tortoise trust:

http://www.tortoisetrust.org/articles/jackson.html

Direct link for the PDF here: http://www.tortoisetrust.org/articles/jacksonratio.pdf

As for sulcatas, I have never seen something like this, but then again never searched the web for it specifically...

 

[Crazy1]

Yes I had the one for the adults that's what I originally thought you were talking about. Duh.
I have never heard of any other and they caution everyone about using this for any other tortoise except Testudos.

 

[Meg90]

Is this the correct version of it? I googled it and the one from tortoise trust had different numbers along both axis.
I want to know how to use this, and have one printed out, and a postal scale that weighs in grams before I get my hatchling...
is this one right?

---

Is a scale that weighs in WHOLE grams a bad idea? Like, it doesn't measure half grams or anything....is that ok?

 

[egyptiandan]

This is the correct ratio for hatchlings Meg. The one on the tortoisetrust website (the link) should be the one for adults.

Danny