How accurate is that weight tape? (Weighing observations) - The Horse Forum
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post #1 of 7 Old 10-13-2009, 10:21 PM Thread Starter
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How accurate is that weight tape? (Weighing observations)

So today I thought it would be fun to get the heights and measurements of the five weanlings.

I took heights with the height/weight tape(I prefer the stick, but didn't want to go to the other barn to get it), weight with the weight tape, and measurements for the body weight equation(HG x HG x BL / 330 = BW).

Comparing the weight tape with the equation was very interesting. Weight is in pounds.

Name ..... Height ..... W. Tape ..... W. Equation ...... Difference
E .......... 13 ........... 358 ........... 362.56 ............. 4.56 *
M ......... 13.2 ......... 424 ........... 396.73 ............. 27.27
W ......... 13.2 ......... 432 ........... 417.09 ............ 14.91
B .......... 12.3 ......... 357 ........... 306.51 ............ 50.49
S .......... 12.3 ......... 389 ........... 347.76 ............ 41.24

*E's equation weight was the only one that came out more than the weight tape weight.

Seeing the colts and physically evaluating them makes me lean more towards the equation weight being the more accurate. Now, if only I could get ahold of an equine scale to see what they really are.
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post #2 of 7 Old 10-13-2009, 10:51 PM
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My horse came out about 50 lbs lighter using the weight tape. I don't use either as a definitive measurement, just as a guage for if he's gaining or losing.
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post #3 of 7 Old 10-13-2009, 11:03 PM Thread Starter
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Very true. About the only truly accurate reading you will get is by scale. I still found the difference interesting.
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post #4 of 7 Old 10-14-2009, 11:59 AM
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Weight tapes have been shown to be as much as 200 lbs off depending on the overall builds and size of the horse. The calculation will tend to be more accurate because it takes into account two variables rather than just one.

Cindy D.
Licensed Veterinary Technician
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post #5 of 7 Old 10-14-2009, 12:26 PM
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Using the calculation versus a weight tape one of ours came in over 200 pounds more using the calculation than compared to the tape. Then we loaded him up in the trailer and went to a commercial truck scale. He was 175 pounds more than the weight tape.

We too just use the tape to get idea of weight gain or loss.
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post #6 of 7 Old 10-14-2009, 04:28 PM
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I've found my horse's weights to be +/- up to 70 lbs. of what the tape says.

Mom to 3 bays: Beau, Daisy & Cavalina
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post #7 of 7 Old 10-14-2009, 05:54 PM
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The weight tape and the equations just provide very rough approximations, and they have both been off by up tp 100 lbs with our mares.

On the sixth day, God created the Quarter Horse.
On the seventh day, he Painted the good ones.
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