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<blockquote data-quote="Idaman" data-source="post: 782260" data-attributes="member: 14119"><p>COW / CALF RATIO Diamond D Angus</p><p>We calculate adjusted wean efficiency for each cow/calf pair.</p><p>Adjusted wean efficiency is computed as the ratio of calf's adjusted</p><p>205 day weight to the cows adjusted weight. The adjusted</p><p>cow weight is estimated by a process of rating each cow's body</p><p>condition and giving her a score. A score of "5" is the median</p><p>(no adjustment taken), 80 pounds is subtracted from her weight</p><p>for a score of "6" and 80 pounds is added to her weight for a</p><p>score of "4". By adjusting cow weights to equal body condition</p><p>scores, it rewards cows that produce a bigger calf while maintaining</p><p>her own body condition. Adjusted cow/calf ratio is shown for</p><p>each sale bull in the catalog.</p><p></p><p>As I look through the catalog I see ratios from 33% to 77% so there is a wide range even in the same herd and management. Some of the studies I have seen conclude that the Angus perspective is the most accurate and a few conclude that the difference is smaller. At least the Angus breed has two types to choose from whereas the Herefords have very few choices when it comes to size. To the lower input crowd this is vitally important.</p><p></p><p>Over many years in our environment the cows will average within a very few pounds of 1100. If they have a size 1600 lb. frame then they will be open and thin or calve every other year. The ones that are a 1100 frame tend to be in good condition and annually bred. The calves will average about 550 no matter what the cow frame size is. So for pure economics and low inputs we know which way to go.</p></blockquote><p></p>
[QUOTE="Idaman, post: 782260, member: 14119"] COW / CALF RATIO Diamond D Angus We calculate adjusted wean efficiency for each cow/calf pair. Adjusted wean efficiency is computed as the ratio of calf’s adjusted 205 day weight to the cows adjusted weight. The adjusted cow weight is estimated by a process of rating each cow’s body condition and giving her a score. A score of “5” is the median (no adjustment taken), 80 pounds is subtracted from her weight for a score of “6” and 80 pounds is added to her weight for a score of “4”. By adjusting cow weights to equal body condition scores, it rewards cows that produce a bigger calf while maintaining her own body condition. Adjusted cow/calf ratio is shown for each sale bull in the catalog. As I look through the catalog I see ratios from 33% to 77% so there is a wide range even in the same herd and management. Some of the studies I have seen conclude that the Angus perspective is the most accurate and a few conclude that the difference is smaller. At least the Angus breed has two types to choose from whereas the Herefords have very few choices when it comes to size. To the lower input crowd this is vitally important. Over many years in our environment the cows will average within a very few pounds of 1100. If they have a size 1600 lb. frame then they will be open and thin or calve every other year. The ones that are a 1100 frame tend to be in good condition and annually bred. The calves will average about 550 no matter what the cow frame size is. So for pure economics and low inputs we know which way to go. [/QUOTE]
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