Beef Cattle | | | 1. Measure the circumference (heart girth) of the animal (distance C). 2. Measure the length of body (distance A-B). 3. Take the values obtained in Steps 1 and 2 and apply the following formula to calculate body weight: Heart girth x heart girth x body length divided by 300 = weight in pounds. Back to top | | |  |
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Dairy Heifer Weights | | | 1. Measure the circumference (heart girth) of the animal (see picture). 2. Use the table to calculate the average weight for the age within 95% accuracy.
| | |  | | | | Age in Months | Holstein | Ayrshire | Guernsey | Jersey | | | (in.) | (lb.) | (in.) | (lb.) | (in.) | (lb.) | (in.) | (lb.) | | Birth | 31 | 96 | 29½ | 72 | 29 | 66 | 24½ | 56 | | 1 month | 33½ | 118 | 32 | 98 | 31½ | 90 | 29½ | 72 | | 2 months | 37 | 161 | 35½ | 132 | 34½ | 122 | 32½ | 102 | | 4 months | 43½ | 272 | 42¾ | 236 | 41¼ | 217 | 38¼ | 181 | | 6 months | 50 | 396 | 48¼ | 340 | 47 | 304 | 44½ | 277 | | 12 months | 62½ | 714 | 59 | 583 | 58¼ | 549 | 56½ | 520 | | 15 months | 65¼ | 805 | 63 | 703 | 61¼ | 640 | 59 | 585 | | 18 months | 68½ | 912 | 66 | 781 | 65 | 727 | 61½ | 660 | | 21 months | 71½ | 1,025 | 68½ | 885 | 67½ | 816 | 64 | 740 | | | Back to top
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Sheep and Goat Weights | | | 1. Measure the circumference (heart girth), making sure to part or compress the wool to ensure accurate measurement (distance C). 2. Measure the length of body (distance A-B). 3. Take the values obtained in Steps 1 and 2 and apply the following formula to calculate body weight: Heart girth x heart girth x body length divided by 300 = weight in pounds. Back to top | | |  |
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Horse Weights | | | 1. Measure the circumference (heart girth) of the animal (distance C). 2. Measure the length of body (distance A-B). 3. Take the values obtained in Steps 1 and 2 and apply the following formula to calculate body weight: Heart girth x heart girth x length divided by 300 + 50 lb. = weight. Back to top | | |  |
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Swine Weights | | | 1. Measure the circumference (heart girth) of the animal (distance C). 2. Measure the length of body (distance A-B) with the animal standing or restrained in the position shown. 3. Take the values obtained in Steps 1 and 2 and apply the following formula to calculate body weight: Heart girth x heart girth x length divided by 400 = weight in pounds. Note: For hogs weighing less than 150 lb., add 7 lb. to the figure obtained from the formula. Back to top | | |  |
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