| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 2079.1 | Formulas etc | DECWET::JDADDAMIO | Think softly | Mon May 05 1997 14:33 | 19 |
| Cathy,
How complicated do you want to get? David Willoughby's book, "Growth
and Nutrition in Horses" has several formulas for estimating weight.
One of them uses several measurements (girth; length; neck girth at
throatlatch, gaskin girth, etc) I'd be glad to look them up for you.
Unfortunately, I'm not conviced that any simple formula using just
girth and length is any better than just girth itself. In EQUUS 165
(July 1991), there was an article entitled "Weighty Matters". That
article had a chart with 3 scales: girth, length, and weight. You
measure the horse's girth and length. Then you draw a line between the
measurements and read off the weight. The method did not produce
weight estimates that were at all consistent with the other methods
described in the article. See Note 33.44 -< EQUUS' Article on Weight
Estimation :-( >- if you want a description of the rest of the problems
I had with their article.
John
|
| 2079.2 | | TUXEDO::dce002.lkg.dec.com::romberg | | Mon May 05 1997 16:24 | 26 |
| John,
I'll go for anything easy to moderately complicated - I don't mind doing
math ;^).
It seems the farm where I board this guy may have developed a
parasite problem. I've since put *my horse* on Strongid C, but
would like to know how close I am to guessing his weight. Since
there's no truck scale at the barn, I'd like some way of estimating his
weight, other than something over 1K lbs.
[please, no comments on how the entire barn should be on Strongid C - it's
not my barn to run, and with the number of horses there, and the mindset of
the management, I'm just going to work to keep my critter as parasite free
as possible]
It would seem to me that given any two horses of X girth, if one
is 8 inches longer than the other, it could conceivably weigh more
[longer 'cylinder' of body mass], no?
I will give the tape a try, just for grins and giggles (if the tape manages
to fit around his royal roundness, but would appreciate anything to compare
against as a cross-reference, short of finding a truck weigh station and
unloading him ;^)
Kathy
|
| 2079.3 | :-) | PASTA::PIERCE | The Truth is Out There | Mon May 05 1997 17:03 | 7 |
|
John, do you memorize the Eqqus issues??? How can you remember the
issue number and just about everything in the book?? or do you have a
stack of the books in your office and you quickly thumb through them a
question pops up here ???
Louisa :-)
|
| 2079.4 | No magic. | DECWET::JDADDAMIO | Think softly | Mon May 05 1997 19:19 | 12 |
| Louisa,
>do you memorize the Eqqus issues???
No, they aren't worth the trouble. ;-) In this case, I "cheated"! I
remembered that Equus did an article on weight estimation and that I
had tried their techniques. I later wrote them a letter saying I
thought the article was a bummer. I posted the contents of the letter
here under the magazine topic. So, I looked up found my note and
used cut & paste to get most of my reply to Cathy. See? No magic. ;-)
John
|
| 2079.5 | | PASTA::PIERCE | The Truth is Out There | Tue May 06 1997 09:05 | 14 |
|
It might not be magic - but your still very impressive.
What do you think of the weight tapes? We use them alot. But, we are
not looking for them to be accurate. We use them all summer, to be
sure our kids are not putting on alot of weight. We have a 6 acre
paster and they can get real fat real quick. We see them every day,
so it's hard for us to tell if they have put on some lbs.
It's been fun putting the tape on the Comet (our baby) every few weeks,
our horses weight does not change that much - but Comet's does. He'll
gain 50lbs in 3 weeks - it's just so fun to watch him grow.
Lou
|
| 2079.6 | The simple formula | DECWET::JDADDAMIO | Think softly | Tue May 06 1997 17:29 | 42 |
| Formulas for weight estimation from Willoughby's "Growth and
Nutrition in Horses".
The simple formula using girth alone produces results
similar to weight tapes. Weight tapes usually say they
give weight within 10% (about 100 pounds for an adult
horse!) or give you a range rather than a precise number.
So, I prefer Willoughby's method because it gives you a
single number which he claims is within 2% (20 - 30 pounds
for an adult horse). I'll do the more complex formula in a
separate note.
Willoughby claims that you can't measure more accurately
than the nearest 1" but I always try for nearest 1/2". You can
use any tape measure for these measurements but cloth ones
are better than steel ones (like carpenters use) because they
bend around the horse easier and they don't make noises which
could spook a horse. Sewing stores often carry cloth tape measures
up to 100" long. They should be big enough even for Cathy's Jolly
Giant! ;-) Sometimes, feed stores carry cloth tapes with inches
on one side and something else (like cow weight) on the other.
Weight(pounds) = (Fudge_factor * girth in inches)�
where Fudge_factor =
0.1387 for colts up to 5 years or 66" girth
measurement or 50" girth for pony breeds
0.1382 for fillies up to 5 years or 66" girth
measurement or 50" girth for pony breeds
0.14475 for Adult Males (all breeds including ponies
w/ girths of at least 50")
0.14341 for Adult Males (all breeds including ponies
w/ girths of at least 50")
I wrote a simple computer program which computes weights
from the girth measurement using these formulas. The
program's output appears in the next 4 notes.
John
|
| 2079.7 | Male Horses | DECWET::JDADDAMIO | Think softly | Tue May 06 1997 17:30 | 32 |
| Male Horses (girth 28 to 85 inches)
GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/-
28.0 79 2 28.5 82 2 29.0 86 2 29.5 91 2
30.0 95 2 30.5 99 2 31.0 104 2 31.5 108 2
32.0 113 2 32.5 118 2 33.0 123 2 33.5 129 3
34.0 134 3 34.5 139 3 35.0 145 3 35.5 151 3
36.0 157 3 36.5 163 3 37.0 169 3 37.5 176 4
38.0 182 4 38.5 189 4 39.0 196 4 39.5 203 4
40.0 210 4 40.5 218 4 41.0 225 5 41.5 233 5
42.0 241 5 42.5 249 5 43.0 258 5 43.5 266 5
44.0 275 5 44.5 284 6 45.0 293 6 45.5 302 6
46.0 312 6 46.5 321 6 47.0 331 7 47.5 341 7
48.0 352 7 48.5 362 7 49.0 373 7 49.5 384 8
50.0 395 8 50.5 406 8 51.0 417 8 51.5 429 9
52.0 441 9 52.5 453 9 53.0 466 9 53.5 478 10
54.0 491 10 54.5 504 10 55.0 517 10 55.5 531 11
56.0 545 11 56.5 559 11 57.0 573 11 57.5 587 12
58.0 602 12 58.5 617 12 59.0 632 13 59.5 648 13
60.0 664 13 60.5 679 14 61.0 696 14 61.5 712 14
62.0 729 15 62.5 746 15 63.0 763 15 63.5 781 16
64.0 798 16 64.5 816 16 65.0 835 17 65.5 853 17
66.0 872 17 66.5 892 9 67.0 912 9 67.5 933 9
68.0 954 10 68.5 975 10 69.0 996 10 69.5 1018 10
70.0 1040 10 70.5 1063 11 71.0 1086 11 71.5 1109 11
72.0 1132 11 72.5 1156 12 73.0 1180 12 73.5 1204 12
74.0 1229 12 74.5 1254 13 75.0 1279 13 75.5 1305 13
76.0 1331 13 76.5 1358 14 77.0 1385 14 77.5 1412 14
78.0 1439 14 78.5 1467 15 79.0 1495 15 79.5 1524 15
80.0 1553 16 80.5 1582 16 81.0 1612 16 81.5 1642 16
82.0 1672 17 82.5 1703 17 83.0 1734 17 83.5 1766 18
84.0 1798 18 84.5 1830 18 85.0 1863 19
|
| 2079.8 | Female Horses | DECWET::JDADDAMIO | Think softly | Tue May 06 1997 17:30 | 32 |
| Female Horses (girth 28 to 85 inches)
GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/-
28.0 75 1 28.5 79 2 29.0 82 2 29.5 86 2
30.0 91 2 30.5 95 2 31.0 99 2 31.5 104 2
32.0 108 2 32.5 113 2 33.0 118 2 33.5 123 2
34.0 128 3 34.5 134 3 35.0 139 3 35.5 145 3
36.0 151 3 36.5 156 3 37.0 163 3 37.5 169 3
38.0 175 4 38.5 182 4 39.0 189 4 39.5 195 4
40.0 202 4 40.5 210 4 41.0 217 4 41.5 225 4
42.0 232 5 42.5 240 5 43.0 248 5 43.5 257 5
44.0 265 5 44.5 274 5 45.0 283 6 45.5 292 6
46.0 301 6 46.5 310 6 47.0 320 6 47.5 330 7
48.0 340 7 48.5 350 7 49.0 360 7 49.5 371 7
50.0 382 8 50.5 393 8 51.0 404 8 51.5 415 8
52.0 427 9 52.5 439 9 53.0 451 9 53.5 463 9
54.0 476 10 54.5 489 10 55.0 502 10 55.5 515 10
56.0 528 11 56.5 542 11 57.0 556 11 57.5 570 11
58.0 584 12 58.5 599 12 59.0 614 12 59.5 629 13
60.0 644 13 60.5 660 13 61.0 675 14 61.5 692 14
62.0 708 14 62.5 725 14 63.0 741 15 63.5 758 15
64.0 776 16 64.5 793 16 65.0 811 16 65.5 830 17
66.0 848 17 66.5 867 9 67.0 887 9 67.5 907 9
68.0 927 9 68.5 948 9 69.0 969 10 69.5 990 10
70.0 1012 10 70.5 1033 10 71.0 1056 11 71.5 1078 11
72.0 1101 11 72.5 1124 11 73.0 1147 11 73.5 1171 12
74.0 1195 12 74.5 1220 12 75.0 1244 12 75.5 1269 13
76.0 1295 13 76.5 1320 13 77.0 1347 13 77.5 1373 14
78.0 1400 14 78.5 1427 14 79.0 1454 15 79.5 1482 15
80.0 1510 15 80.5 1539 15 81.0 1567 16 81.5 1597 16
82.0 1626 16 82.5 1656 17 83.0 1686 17 83.5 1717 17
84.0 1748 17 84.5 1780 18 85.0 1811 18
|
| 2079.9 | Male Ponies | DECWET::JDADDAMIO | Think softly | Tue May 06 1997 17:30 | 29 |
| Male Ponies (girth 20 to 70 inches)
GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/-
20.0 32 1 20.5 34 1 21.0 36 1 21.5 39 1
22.0 41 1 22.5 44 1 23.0 46 1 23.5 49 1
24.0 52 1 24.5 55 1 25.0 58 1 25.5 61 1
26.0 64 1 26.5 68 1 27.0 71 1 27.5 75 1
28.0 79 2 28.5 82 2 29.0 86 2 29.5 91 2
30.0 95 2 30.5 99 2 31.0 104 2 31.5 108 2
32.0 113 2 32.5 118 2 33.0 123 2 33.5 129 3
34.0 134 3 34.5 139 3 35.0 145 3 35.5 151 3
36.0 157 3 36.5 163 3 37.0 169 3 37.5 176 4
38.0 182 4 38.5 189 4 39.0 196 4 39.5 203 4
40.0 210 4 40.5 218 4 41.0 225 5 41.5 233 5
42.0 241 5 42.5 249 5 43.0 258 5 43.5 266 5
44.0 275 5 44.5 284 6 45.0 293 6 45.5 302 6
46.0 312 6 46.5 321 6 47.0 331 7 47.5 341 7
48.0 352 7 48.5 362 7 49.0 373 7 49.5 384 8
50.0 395 8 50.5 391 4 51.0 402 4 51.5 414 4
52.0 426 4 52.5 439 4 53.0 452 5 53.5 464 5
54.0 478 5 54.5 491 5 55.0 505 5 55.5 518 5
56.0 533 5 56.5 547 5 57.0 562 6 57.5 577 6
58.0 592 6 58.5 607 6 59.0 623 6 59.5 639 6
60.0 655 7 60.5 672 7 61.0 688 7 61.5 705 7
62.0 723 7 62.5 740 7 63.0 758 8 63.5 777 8
64.0 795 8 64.5 814 8 65.0 833 8 65.5 852 9
66.0 872 9 66.5 892 9 67.0 912 9 67.5 933 9
68.0 954 10 68.5 975 10 69.0 996 10 69.5 1018 10
70.0 1040 10
|
| 2079.10 | Female Ponies | DECWET::JDADDAMIO | Think softly | Tue May 06 1997 17:31 | 29 |
| Female Ponies (girth 20 to 70 inches)
GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/-
20.0 30 1 20.5 32 1 21.0 34 1 21.5 36 1
22.0 39 1 22.5 41 1 23.0 44 1 23.5 46 1
24.0 49 1 24.5 52 1 25.0 55 1 25.5 58 1
26.0 61 1 26.5 64 1 27.0 68 1 27.5 71 1
28.0 75 1 28.5 79 2 29.0 82 2 29.5 86 2
30.0 91 2 30.5 95 2 31.0 99 2 31.5 104 2
32.0 108 2 32.5 113 2 33.0 118 2 33.5 123 2
34.0 128 3 34.5 134 3 35.0 139 3 35.5 145 3
36.0 151 3 36.5 156 3 37.0 163 3 37.5 169 3
38.0 175 4 38.5 182 4 39.0 189 4 39.5 195 4
40.0 202 4 40.5 210 4 41.0 217 4 41.5 225 4
42.0 232 5 42.5 240 5 43.0 248 5 43.5 257 5
44.0 265 5 44.5 274 5 45.0 283 6 45.5 292 6
46.0 301 6 46.5 310 6 47.0 320 6 47.5 330 7
48.0 340 7 48.5 350 7 49.0 360 7 49.5 371 7
50.0 382 8 50.5 380 4 51.0 391 4 51.5 403 4
52.0 415 4 52.5 427 4 53.0 439 4 53.5 452 5
54.0 464 5 54.5 477 5 55.0 491 5 55.5 504 5
56.0 518 5 56.5 532 5 57.0 546 5 57.5 561 6
58.0 575 6 58.5 590 6 59.0 606 6 59.5 621 6
60.0 637 6 60.5 653 7 61.0 669 7 61.5 686 7
62.0 703 7 62.5 720 7 63.0 737 7 63.5 755 8
64.0 773 8 64.5 791 8 65.0 810 8 65.5 829 8
66.0 848 8 66.5 867 9 67.0 887 9 67.5 907 9
68.0 927 9 68.5 948 9 69.0 969 10 69.5 990 10
70.0 1012 10
|
| 2079.11 | The complicated formula | DECWET::JDADDAMIO | Think softly | Tue May 06 1997 17:31 | 28 |
| Willoughby's more complicated formula uses 6 measurements in inches:
Girth of neck - minimum at throatlatch
Chest Girth - maximum behind withers
Girth of forearm - maximum
Girth of gaskin - maximum
Girth of hind cannon - minimum
Length of trunk - slantwise from shoulder to buttock
NOTE: This is not quite the same as blanket
measurements which are done from center of the
chest to buttock so this measurement should be
several inches smaller than your horse's blanket
size. Willoughby states that the trunk length
of nearly all horses will be between 86% and 90% of
the girth measurement. For example, one of our horses
has a 75 inch girth. So Willoughby's numbers suggest
he should have a trunk length between 64.5" and 67.5"
He measured 65 inches in trunk length (87%) but he
takes an 80" blanket.
The formula:
Body weight (pounds) = (Neck �+ Chest �+ Forearm �+
Gaskin � + HindCannon �) * Length / Fudge
where Fudge = 392.7 for adult males and 395.7 for
adult females.
|
| 2079.12 | many thanks! | TUXEDO::dce002.lkg.dec.com::romberg | | Wed May 07 1997 09:25 | 9 |
| John,
Thank you so much for all this information...I know what I will be
doing the next few times I see my big guy! I actually found my weight
tape last night, but after looking at it, I think my moose-child is
going to be off the scales (it will measure his height okay, but I
don't think it will make it around his girth!)
Kathy
|
| 2079.13 | the weigh station | CSCMA::SMITH | | Wed May 07 1997 10:45 | 9 |
| By the way, you wouldn't have to unload your horse at the weigh
station, you would just have go twice, once with the horse and once
without and subtract the two. If your measuring the truck as well
you would have to account for fuel and people (keeping them the same).
It would be interesting to see how close the some of the tape methods
got.
Sharon
|
| 2079.6 | The simple formula(revisited) | DECWET::JDADDAMIO | Think softly | Wed May 07 1997 14:19 | 63 |
| I am reposting the formulas for weight estimation from
Willoughby's "Growth and Nutrition in Horses" to correct
1) a typo, 2) an omission and 3) the error estimates
in the program output. I'll describe the changes briefly
here so you don't have to read the whole note again to know
what changed.
1. The typo: I gave two different fudge factors for
adult males. The smaller one was supposed to be
for adult females.
2. The omission: I neglected to say that the computer
program uses the colt/filly fudge factors for girths
up to 66" for horses and up to 50" for ponies. Then,
it uses the adult appropriate fudge factors.
3. The error: The computer program had a typo in it
which made the error estimates for adult
horses/ponies 1% instead of 2%. I fixed it and
will repost all cases.
Some day, I'll learn how to type and then most of this kind
of problem will be avoided!
The simple formula using girth alone produces results
similar to weight tapes. Weight tapes usually say they
give weight within 10% (about 100 pounds for an adult
horse!) or give you a range rather than a precise number.
So, I prefer Willoughby's method because it gives you a
single number which he claims is within 2% (20 - 30 pounds
for an adult horse). I'll do the more complex formula in a
separate note.
Willoughby claims that you can't measure more accurately
than the nearest 1" but I always try for nearest 1/2". You can
use any tape measure for these measurements but cloth ones
are better than steel ones (like carpenters use) because they
bend around the horse easier and they don't make noises which
could spook a horse. Sewing stores often carry cloth tape measures
up to 100" long. They should be big enough even for Cathy's Jolly
Giant! ;-) Sometimes, feed stores carry cloth tapes with inches
on one side and something else (like cow weight) on the other.
Weight(pounds) = (Fudge_factor * girth in inches)�
where Fudge_factor =
0.1387 for colts up to 5 years or 66" girth
measurement or 50" girth for pony breeds
0.1382 for fillies up to 5 years or 66" girth
measurement or 50" girth for pony breeds
0.14475 for Adult Males (all breeds including ponies
w/ girths of at least 50")
0.14341 for Adult Females (all breeds including ponies
w/ girths of at least 50")
I wrote a simple computer program which computes weights
from the girth measurement using these formulas. The program
uses the colt/filly fudge factors for girths up to 66" for
horses and upto 50" for ponies. Then, it uses the adult
fudge factors. I used an error estimate of 2% in all cases.
The program's output appears in the next 4 notes.
John
|
| 2079.7 | Male Horses | DECWET::JDADDAMIO | Think softly | Wed May 07 1997 14:21 | 32 |
| Male Horses (girth 28 to 85 inches)
GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/-
28.0 79 2 28.5 82 2 29.0 86 2 29.5 91 2
30.0 95 2 30.5 99 2 31.0 104 2 31.5 108 2
32.0 113 2 32.5 118 2 33.0 123 2 33.5 129 3
34.0 134 3 34.5 139 3 35.0 145 3 35.5 151 3
36.0 157 3 36.5 163 3 37.0 169 3 37.5 176 4
38.0 182 4 38.5 189 4 39.0 196 4 39.5 203 4
40.0 210 4 40.5 218 4 41.0 225 5 41.5 233 5
42.0 241 5 42.5 249 5 43.0 258 5 43.5 266 5
44.0 275 5 44.5 284 6 45.0 293 6 45.5 302 6
46.0 312 6 46.5 321 6 47.0 331 7 47.5 341 7
48.0 352 7 48.5 362 7 49.0 373 7 49.5 384 8
50.0 395 8 50.5 406 8 51.0 417 8 51.5 429 9
52.0 441 9 52.5 453 9 53.0 466 9 53.5 478 10
54.0 491 10 54.5 504 10 55.0 517 10 55.5 531 11
56.0 545 11 56.5 559 11 57.0 573 11 57.5 587 12
58.0 602 12 58.5 617 12 59.0 632 13 59.5 648 13
60.0 664 13 60.5 679 14 61.0 696 14 61.5 712 14
62.0 729 15 62.5 746 15 63.0 763 15 63.5 781 16
64.0 798 16 64.5 816 16 65.0 835 17 65.5 853 17
66.0 872 17 66.5 892 18 67.0 912 18 67.5 933 19
68.0 954 19 68.5 975 19 69.0 996 20 69.5 1018 20
70.0 1040 21 70.5 1063 21 71.0 1086 22 71.5 1109 22
72.0 1132 23 72.5 1156 23 73.0 1180 24 73.5 1204 24
74.0 1229 25 74.5 1254 25 75.0 1279 26 75.5 1305 26
76.0 1331 27 76.5 1358 27 77.0 1385 28 77.5 1412 28
78.0 1439 29 78.5 1467 29 79.0 1495 30 79.5 1524 30
80.0 1553 31 80.5 1582 32 81.0 1612 32 81.5 1642 33
82.0 1672 33 82.5 1703 34 83.0 1734 35 83.5 1766 35
84.0 1798 36 84.5 1830 37 85.0 1863 37
|
| 2079.8 | Female Horses | DECWET::JDADDAMIO | Think softly | Wed May 07 1997 14:22 | 32 |
| Female Horses (girth 28 to 85 inches)
GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/-
28.0 75 1 28.5 79 2 29.0 82 2 29.5 86 2
30.0 91 2 30.5 95 2 31.0 99 2 31.5 104 2
32.0 108 2 32.5 113 2 33.0 118 2 33.5 123 2
34.0 128 3 34.5 134 3 35.0 139 3 35.5 145 3
36.0 151 3 36.5 156 3 37.0 163 3 37.5 169 3
38.0 175 4 38.5 182 4 39.0 189 4 39.5 195 4
40.0 202 4 40.5 210 4 41.0 217 4 41.5 225 4
42.0 232 5 42.5 240 5 43.0 248 5 43.5 257 5
44.0 265 5 44.5 274 5 45.0 283 6 45.5 292 6
46.0 301 6 46.5 310 6 47.0 320 6 47.5 330 7
48.0 340 7 48.5 350 7 49.0 360 7 49.5 371 7
50.0 382 8 50.5 393 8 51.0 404 8 51.5 415 8
52.0 427 9 52.5 439 9 53.0 451 9 53.5 463 9
54.0 476 10 54.5 489 10 55.0 502 10 55.5 515 10
56.0 528 11 56.5 542 11 57.0 556 11 57.5 570 11
58.0 584 12 58.5 599 12 59.0 614 12 59.5 629 13
60.0 644 13 60.5 660 13 61.0 675 14 61.5 692 14
62.0 708 14 62.5 725 14 63.0 741 15 63.5 758 15
64.0 776 16 64.5 793 16 65.0 811 16 65.5 830 17
66.0 848 17 66.5 867 17 67.0 887 18 67.5 907 18
68.0 927 19 68.5 948 19 69.0 969 19 69.5 990 20
70.0 1012 20 70.5 1033 21 71.0 1056 21 71.5 1078 22
72.0 1101 22 72.5 1124 22 73.0 1147 23 73.5 1171 23
74.0 1195 24 74.5 1220 24 75.0 1244 25 75.5 1269 25
76.0 1295 26 76.5 1320 26 77.0 1347 27 77.5 1373 27
78.0 1400 28 78.5 1427 29 79.0 1454 29 79.5 1482 30
80.0 1510 30 80.5 1539 31 81.0 1567 31 81.5 1597 32
82.0 1626 33 82.5 1656 33 83.0 1686 34 83.5 1717 34
84.0 1748 35 84.5 1780 36 85.0 1811 36
|
| 2079.9 | Male Ponies | DECWET::JDADDAMIO | Think softly | Wed May 07 1997 14:23 | 29 |
| Male Ponies(girth 20 to 70 inches)
GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/-
20.0 32 1 20.5 34 1 21.0 36 1 21.5 39 1
22.0 41 1 22.5 44 1 23.0 46 1 23.5 49 1
24.0 52 1 24.5 55 1 25.0 58 1 25.5 61 1
26.0 64 1 26.5 68 1 27.0 71 1 27.5 75 1
28.0 79 2 28.5 82 2 29.0 86 2 29.5 91 2
30.0 95 2 30.5 99 2 31.0 104 2 31.5 108 2
32.0 113 2 32.5 118 2 33.0 123 2 33.5 129 3
34.0 134 3 34.5 139 3 35.0 145 3 35.5 151 3
36.0 157 3 36.5 163 3 37.0 169 3 37.5 176 4
38.0 182 4 38.5 189 4 39.0 196 4 39.5 203 4
40.0 210 4 40.5 218 4 41.0 225 5 41.5 233 5
42.0 241 5 42.5 249 5 43.0 258 5 43.5 266 5
44.0 275 5 44.5 284 6 45.0 293 6 45.5 302 6
46.0 312 6 46.5 321 6 47.0 331 7 47.5 341 7
48.0 352 7 48.5 362 7 49.0 373 7 49.5 384 8
50.0 395 8 50.5 391 8 51.0 402 8 51.5 414 8
52.0 426 9 52.5 439 9 53.0 452 9 53.5 464 9
54.0 478 10 54.5 491 10 55.0 505 10 55.5 518 10
56.0 533 11 56.5 547 11 57.0 562 11 57.5 577 12
58.0 592 12 58.5 607 12 59.0 623 12 59.5 639 13
60.0 655 13 60.5 672 13 61.0 688 14 61.5 705 14
62.0 723 14 62.5 740 15 63.0 758 15 63.5 777 16
64.0 795 16 64.5 814 16 65.0 833 17 65.5 852 17
66.0 872 17 66.5 892 18 67.0 912 18 67.5 933 19
68.0 954 19 68.5 975 19 69.0 996 20 69.5 1018 20
70.0 1040 21
|
| 2079.10 | Female Ponies | DECWET::JDADDAMIO | Think softly | Wed May 07 1997 14:23 | 29 |
| Female Ponies (girth 20 to 70 inches)
GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/- GIRTH WEIGHT +/-
20.0 30 1 20.5 32 1 21.0 34 1 21.5 36 1
22.0 39 1 22.5 41 1 23.0 44 1 23.5 46 1
24.0 49 1 24.5 52 1 25.0 55 1 25.5 58 1
26.0 61 1 26.5 64 1 27.0 68 1 27.5 71 1
28.0 75 1 28.5 79 2 29.0 82 2 29.5 86 2
30.0 91 2 30.5 95 2 31.0 99 2 31.5 104 2
32.0 108 2 32.5 113 2 33.0 118 2 33.5 123 2
34.0 128 3 34.5 134 3 35.0 139 3 35.5 145 3
36.0 151 3 36.5 156 3 37.0 163 3 37.5 169 3
38.0 175 4 38.5 182 4 39.0 189 4 39.5 195 4
40.0 202 4 40.5 210 4 41.0 217 4 41.5 225 4
42.0 232 5 42.5 240 5 43.0 248 5 43.5 257 5
44.0 265 5 44.5 274 5 45.0 283 6 45.5 292 6
46.0 301 6 46.5 310 6 47.0 320 6 47.5 330 7
48.0 340 7 48.5 350 7 49.0 360 7 49.5 371 7
50.0 382 8 50.5 380 8 51.0 391 8 51.5 403 8
52.0 415 8 52.5 427 9 53.0 439 9 53.5 452 9
54.0 464 9 54.5 477 10 55.0 491 10 55.5 504 10
56.0 518 10 56.5 532 11 57.0 546 11 57.5 561 11
58.0 575 12 58.5 590 12 59.0 606 12 59.5 621 12
60.0 637 13 60.5 653 13 61.0 669 13 61.5 686 14
62.0 703 14 62.5 720 14 63.0 737 15 63.5 755 15
64.0 773 15 64.5 791 16 65.0 810 16 65.5 829 17
66.0 848 17 66.5 867 17 67.0 887 18 67.5 907 18
68.0 927 19 68.5 948 19 69.0 969 19 69.5 990 20
70.0 1012 20
|
| 2079.14 | For thos inquiring minds that want to know the results... | TUXEDO::dce002.lkg.dec.com::romberg | | Thu May 08 1997 10:24 | 31 |
| Well, last night the big guy and I had a measuring session, and the
results are in:
For my horse (17hh, 16 yr old QH gelding)
Weight tape
Off the printed scale (which goes to 1321) by about 3". If you
extrapolate out the 16lb increments, his weight would be 1449.
Willoughby's simple formula
Heart girth = 79.5, age = 16, sex = male (gelding)
Weight(pounds) = (.14475 * 79.5)� = 1524 +/- 30
Willoughby's more complex formula
neck = 34, chest = 79.5, forearm = 22,
gaskin = 19, hind cannon = 9.25, length = 70
weight (pounds) = ((34�+ 79.5�+ 22�+ 19� + 9.25�) * 70) / 392.7
= 1498.5
I figure I can pretty safely consider him to be a 1500lb chicken
(he's not known for his bravery!).
For grins and giggles, I did the measurements on a 16.2+ thoroughbred
mare last night also. Her numbers also came out pretty close.
tape = 1206 (she was on the scale ;^)
simple = 1269 +/- 25
complex = 1254
Kathy
|