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<blockquote data-quote="Katpau" data-source="post: 1605208" data-attributes="member: 9933"><p>The temperature in the last 3 months of gestation has a huge impact on birth weights. Gizmom mentioned the Heat last summer and I would expect that may be the reason for her lighter birth weights. Don't expect the same results when calving in the cold up north. I so often read comments on here where someone thinks 85 pounds is large. When we calve in the cold rain/snow in Oregon in February, the mid 80's are the little calves. I think some of those who estimate their calves at 70 pounds, might be surprised if the put them on a scale. 85 pounds looks tiny next to a 1300 to 1400 pound cow. </p><p></p><p>I went to a sale last week where they sold both bulls that were mostly born in August and others who were mostly born in February. The August bulls had birth weights in the 60 to 78 pound range while those born in February were almost all above 85 pounds with many in the high 90's. These calves were sired by the same bulls and the cows were all from a long term reputation herd and were similar in bloodlines and EPD's.</p></blockquote><p></p>
[QUOTE="Katpau, post: 1605208, member: 9933"] The temperature in the last 3 months of gestation has a huge impact on birth weights. Gizmom mentioned the Heat last summer and I would expect that may be the reason for her lighter birth weights. Don't expect the same results when calving in the cold up north. I so often read comments on here where someone thinks 85 pounds is large. When we calve in the cold rain/snow in Oregon in February, the mid 80's are the little calves. I think some of those who estimate their calves at 70 pounds, might be surprised if the put them on a scale. 85 pounds looks tiny next to a 1300 to 1400 pound cow. I went to a sale last week where they sold both bulls that were mostly born in August and others who were mostly born in February. The August bulls had birth weights in the 60 to 78 pound range while those born in February were almost all above 85 pounds with many in the high 90's. These calves were sired by the same bulls and the cows were all from a long term reputation herd and were similar in bloodlines and EPD's. [/QUOTE]
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