milesvb
Well-known member
Is there a simple formula for calculating a 205 day weaning weight? The only "knowns" are the calf's weight, the calf's age and the approximate age of the dam.
jkwilson":2k6aqwet said:{(Current weight - birth weight)- divided by days of age} multiplied by 205.
You are figuring out how many pounds per day the calf has gained since birth, then multiplying that by 205.
milesvb":1bxe8h4s said:jkwilson":1bxe8h4s said:{(Current weight - birth weight)- divided by days of age} multiplied by 205.
You are figuring out how many pounds per day the calf has gained since birth, then multiplying that by 205.
The problem is that I don't have a birthweight.
Muratic":1u9w8sg3 said:milesvb":1u9w8sg3 said:jkwilson":1u9w8sg3 said:{(Current weight - birth weight)- divided by days of age} multiplied by 205.
You are figuring out how many pounds per day the calf has gained since birth, then multiplying that by 205.
The problem is that I don't have a birthweight.
Then I reckon that you don't need to adjust the weaning weight too badly if you can even get a BW.
dun":1hamorte said:You'll have to SWAG the birth weights, but here's the BIF wieght adjustment site
http://www.beefimprovement.org/guidelines/App3-1.PDF
milesvb":253j5jrh said:Are dam adjustment factors different for different breeds?
MikeC":3ki5csyz said:WDA (Weight per Day of Age) is the calculation a lot of people use that do not have birthweights.
WDA=Total calf weight divided by number of days of age.
If it comes out over "3" you're in pretty good shape.
El_Putzo":3a5i3orx said:MikeC":3a5i3orx said:WDA (Weight per Day of Age) is the calculation a lot of people use that do not have birthweights.
WDA=Total calf weight divided by number of days of age.
If it comes out over "3" you're in pretty good shape.
Mike,
Just curious here, but did you leave the subtraction of birthweight out of you equation for a reason? I would think you would be better off using an estimated BW than none at all and getting an inflated WDA.