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Does more pounds per acre make up for being docked at the sale barn for small frame size?
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<blockquote data-quote="simme" data-source="post: 1824452" data-attributes="member: 40418"><p>Around 7 months. I have a short calving season, but weigh/wean them on the same day. So some variation in age equal to length of calving season. But weaning weights I use are adjusted to 205 day per industry standards. Reason for adjustment is to be able to compare weights between calves. Otherwise, a person could wean at 8 and report way better weights than a person who weans at 6. But that would not necessarily mean that the older calves have more growth ability and gives an unfair comparison. Breed associations and many commercial people adjust to 205 days.</p><p></p><p>Formula is: <strong>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)</strong>.</p><p></p><p>Age of dam adjustment adds an adjustment for young dams and old dams. Again to attempt to get a number that reflects growth in the calf genetics independent of the age of the dam. A 2 year old will produce less milk on her first lactation. Increasing milk production until about 5 years old. Full milk production for 5 years and then will taper off some after 10 years of age. Age of dam adjustment compensates for that change in milk production with age.</p></blockquote><p></p>
[QUOTE="simme, post: 1824452, member: 40418"] Around 7 months. I have a short calving season, but weigh/wean them on the same day. So some variation in age equal to length of calving season. But weaning weights I use are adjusted to 205 day per industry standards. Reason for adjustment is to be able to compare weights between calves. Otherwise, a person could wean at 8 and report way better weights than a person who weans at 6. But that would not necessarily mean that the older calves have more growth ability and gives an unfair comparison. Breed associations and many commercial people adjust to 205 days. Formula is: [B]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)[/B]. Age of dam adjustment adds an adjustment for young dams and old dams. Again to attempt to get a number that reflects growth in the calf genetics independent of the age of the dam. A 2 year old will produce less milk on her first lactation. Increasing milk production until about 5 years old. Full milk production for 5 years and then will taper off some after 10 years of age. Age of dam adjustment compensates for that change in milk production with age. [/QUOTE]
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Does more pounds per acre make up for being docked at the sale barn for small frame size?
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