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Old 17-08-2010, 04:25 PM   #1
PumpkinPie
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Default The collective Horsfield size/ weight thread *PLEASE POST YOUR DETAILS*

I thought it would be a good idea for everyone to post the size and weight of their Horsfields, since there is no formal size/ weight chart for them we can use the results as a point of reference.

P.S. please add the age of your Tort too!

Results:

Owner: WriterNick

Ovid.

Age: 1

Size: 62mm

Weight: 60g


Owner: jamestaylor18

Ted.

Age: 1

Size: 80mm

Weight: 115g


Owner: rosshan

Titch.

Age: 1

Size: 64mm

Weight: 68g


Owner: jamestaylor18

Fred.

Age: 1-2

Size: 100mm

Weight: 180g


Owner: freakinmental

Pebble.

Age: 2

Size: 69mm

Weight: 73g


Owner: rosshan

Eddie.

Age: 2

Size: 86mm

Weight: 158g


Owner: Helen M

Charlie.

Age: 2

Size: 74mm

Weight: 69g


Owner: Helen M

George.

Age: 2

Size: 75mm

Weight: 69g


Owner: Helen M

Luna.

Age: 3

Size: 71mm

Weight: 67g


Owner: eliza

Fendi.

Age: 3

Size: 89mm

Weight: 171g


Owner: ibizathetort

Ibiza.

Age: 3

Size: 90mm

Weight: 152g


Owner: eliza

Dior.

Age: 3

Size: 87mm

Weight: 139g


Owner: eliza

Chanel.

Age: 3

Size: 95mm

Weight: 200g


Owner: eliza

Dolce.

Age: 4

Size: 111mm

Weight: 279g


Owner: Lolly8

Oscar Lollipop.

Age: 4

Size: 120mm

Weight: 341g


Owner: Rowan

Twiglet.


Age: 4-5

Size: 98mm

Weight: 177g


Owner: Steph37

Rosemary.

Age: 4-5

Size: 89mm

Weight: 116g


Owner: Steph37

Thyme.

Age: 4-5

Size: 80mm

Weight: 112g


Owner: Steph37

Parsley.

Age: 4-5

Size: 96mm

Weight: 184g


Owner: Steph37

Chicory.

Age: 4-5

Size: 93mm

Weight: 143g


Owner: PumpkinPie

Bruce.

Age: 5-6

Size: 123mm

Weight: 375g


Owner: eliza

Alfie.

Age: 6

Size: 127mm

Weight: 390g


Owner: Rowan

Tetley.

Age: 6-7

Size: 118mm

Weight: 335g


Owner: suet/myrtle

Suet.

Age: 6/7?

Size: 117mm

Weight: 300g


Owner: suet/myrtle

Myrtle.

Age: 6/7?

Size: 101mm

Weight: 210g


Owner: Steph37

Willow.

Age: 8

Size: 145mm

Weight: 570g


Owner: Helen M

Martha.

Age: 10

Size: 155mm

Weight: 734g


Owner: Helen M

April.

Age: 15-20

Size: 135mm

Weight: 605g


Owner: anniesmom

Tia.

Age: 18

Size: 165mm

Weight: 1145g


Owner: ibizathetort

Eivissa.

Age: Unknown, 20+ years

Size: 205mm

Weight: 949g


Owner: Steph37

Mallow.

Age: Unknown, told 20-25 years and then 8 years.

Size: 130mm

Weight: 487g

Last edited by PumpkinPie; 06-09-2010 at 08:34 AM.
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Old 17-08-2010, 05:16 PM   #2
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There is a graph called The McIntyre ratio for Horsfields but I don't believe that it's generally considered to be as definitive as the Jackson ratio for Hermanns? There is a link to it somewhere on SW (maybe in the caresheets section?) There is apparently a Mcintyre ratio for juvenile horsfields too which would be of interest to me but trying to find it is like searching for El Dorado!
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Old 17-08-2010, 05:24 PM   #3
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I have the graph but I don't believe it's accurate, according to the graph my Tortoise is underweight but I feed him continuously and he eats non-stop all day, every day. I don't think there's any possible way that he could eat any more in order to get fatter, that's why I thought it better to record real world results and compare them.
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Old 17-08-2010, 05:35 PM   #4
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You're right Pumpkin, I think I remember reading (though I could be wrong) that the McIntyre Ratio was based on a small sample of Horsfields and therefore wasn't to be taken as gospel. My Ovid is only a youngster, I think his length is approximately 62mm and his weight fluctuates around 60g and I would like to know how that compares to other young Horsfields? Forgot to add that he is approximately 1 year old.
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Old 17-08-2010, 05:45 PM   #5
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If people start posting then I will take all the sizes and edit them into my first post so that they are all the same place and we can get a good idea of averages...hopefully people are just at work at the moment and unable to post.
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Old 17-08-2010, 07:17 PM   #6
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Hi,

Think this is great idea.

Tetley:

years: 6 - 7
length: 118mm
weight: 335g

Twiglet:

years: 4 - 5
lenght 98mm
weight: 177g

Row x
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Old 17-08-2010, 07:36 PM   #7
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This is actually a really interesting experiment. If you get enough plots you can put together your own graph. From this you do a simple regression analysis (most graphing calculators do this) to come up with a general formula. This is basicaly what the 'McIntyre' ratio and the Jacksons ratio are. I'd be curious to see how the ratios differ.

You can also probably find a program online that will also do this for you. To get the most accurate formula it is better to get as many plots as possible. Again we are only looking at size and weight... age really does not matter.


Quote:
Originally Posted by WriterNick View Post
There is a graph called The McIntyre ratio for Horsfields but I don't believe that it's generally considered to be as definitive as the Jackson ratio for Hermanns? There is a link to it somewhere on SW (maybe in the caresheets section?) There is apparently a Mcintyre ratio for juvenile horsfields too which would be of interest to me but trying to find it is like searching for El Dorado!
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Old 17-08-2010, 08:07 PM   #8
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My horsefields are as follows:

Fred (1-2yr old)
Aprox 100mm
weight 180g

Ted (1yr old)
Aprox 80mm
weight 115g

would be great to make the shelled warriors horsefield ratio!
Look forward to seeing the finished artical!!
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Old 17-08-2010, 08:19 PM   #9
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Wink

Martha - Female
Age - 10 years
SCL - 15.5cm
Weight - 734g

April - Male
Age - 15 - 20 years
SCL - 13.5cm
Weight - 605g

Charlie
Age - 2 years
SCL - 7.4cm
Weight - 69g

George
Age - 2 years
SCL - 7.5cm
Weight - 69g

Luna
Age - 3 years
SCL - 7.1cm
Weight - 67g

Helen xx
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Old 17-08-2010, 08:31 PM   #10
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In order for this to work the measurements have to be as exact as possible... approx. adds just that much more error.
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