How do you calculate weaning weight?
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How do you calculate weaning weight?
The formula works fairly simply: Adjusted 205-day weight equals (actual weaning weight minus birth weight divided by age in days) multiplied by (205 plus birth weight plus age-of-dam adjustment).
How much should a calf weigh at weaning?
500-700 lbs
Most calves will weigh 500-700 lbs at weaning. These calves will be backgrounded for several months. Backgrounding simply means feeding calves mostly on forage (grass or hay), with some supplemental feed if needed.
How do you calculate calf crop weaned?
Mathematically it is the number of calves weaned (numerator) divided by the number of females exposed to produce that calf crop (denominator) and this number times 100 to get it to a percentage [(# calves weaned/# cows exposed) x 100].
How do you estimate the weight of a calf?
Measure from the base of the withers, down under the belly, just behind the elbow and foreleg, and all the way back around. After these measurements are made in inches – use the following formula. 3. (Heart girth X heart girth X body length) ÷ 330 = weight in pounds.
How much should a 5 month old Angus calf weigh?
How Much Does A Calf Weigh?
| Age | Jersey (lbs.) | Holstein (lbs.) |
|---|---|---|
| 3 months | 155-177 | 211-234 |
| 4 months | 183-217 | 258-284 |
| 5 months | 233-278 | 311-339 |
| 6 months | 259-321 | 369-422 |
What is the average weaning weight of Angus calves?
The herd’s average calf-crop weaning weight is typically 550 lb. Calves out of the heavier cows would have a greater cost for nutritional maintenance requirements. For every 200 lb. in cow weight, there is roughly an additional 3 lb.
How much should a 10 month old calf weigh?
How Much Does A Calf Weigh?
| Age | Jersey (lbs.) | Holstein (lbs.) |
|---|---|---|
| 5 months | 233-278 | 311-339 |
| 6 months | 259-321 | 369-422 |
| 8 months | 335-412 | 468-530 |
| 10 months | 391-483 | 575-653 |
What is average calving percentage?
Research has shown that heifers that fail to breed the first year and are held over have an average lifetime calf crop of 55 percent, compared to 86 percent for herdmates that become pregnant the first year.
What is the calving percentage?
An embryonic and fetal mortality rate (excluding fertilization failure) of ∼40% is calculated for moderate-producing cows based on a fertilization rate of 90% and an average calving rate of ∼55%, with an estimated 70–80% of the loss being sustained between days 8 and 16 after insemination.
How much does an 8 month old calf weigh?
How accurate are cattle weight tape?
They are accurate within about 5 percent and are quite reliable even when measurements are made by several different people over time.
How much will a 6 month old calf weigh?
How Much Does A Calf Weigh?
| Age | Jersey (lbs.) | Holstein (lbs.) |
|---|---|---|
| 4 months | 183-217 | 258-284 |
| 5 months | 233-278 | 311-339 |
| 6 months | 259-321 | 369-422 |
| 8 months | 335-412 | 468-530 |
How much should an 8 month old calf weigh?
How Much Does A Calf Weigh?
| Age | Jersey (lbs.) | Holstein (lbs.) |
|---|---|---|
| 6 months | 259-321 | 369-422 |
| 8 months | 335-412 | 468-530 |
| 10 months | 391-483 | 575-653 |
| 12 months | 471-548 | 682-760 |
How much does a 2 year old calf weigh?
The 2-year-old weighed 1,082 pounds (4.9), 3-year-olds 1,184 (5), 4-year-olds 1,255 (5), 5-year-olds 1,279 (5.1), 6-year-olds 1,301 (5.2) and the 7-year-olds 1,304 (5.2). One should note that cows keep growing until they reach 7 years of age in this data set.
How do you calculate EPD?
This is a calculated figure of one-half the bull’s weaning weight direct EPD plus his milk EPD. For example, Bull A has a maternal weaning weight value of 13, which is equal to half of his weaning weight direct EPD (20/2=10) plus his milk EPD (3).
What is a good birth weight for cattle?
“A cow can give birth to a heavier calf, have the calf get up and nurse right away, and do all this in a harsh environment. If these cows are limited to giving birth to a 65-pound calf, that calf is a loss. I think 85 to 90 pounds may be more ideal in most situations,” he says.
What is a drop calf?
“Drop calf” is the industry term for baby cows who are taken from their mothers to be sold for slaughter. To a dairy farmer, a baby cow is competition for his mother’s milk and therefore an unnecessary cost.
What is weaning rate in cattle?
Weaning Percentage is the number of calves weaned divided by the number of live calves that were born and nursed their dam.
