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How much is to much BW
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<blockquote data-quote="Willow Springs" data-source="post: 610291" data-attributes="member: 9002"><p>I agree with what you are saying on cow size; if you check my last posts i have been saying that BW is and should be matched to cow weight. A 1500 lb cow will have a 105 lb calf without trouble (7% of her bodyweight); a 1000 lb cow should only be having 70 lb calves. Now if I have a 60 lb calf from my 1500 lb cow that would be equivalnet to a 40 lb calf on a 1000 lb cow. Now tell me do your 40 lb calves grow as well as your 60 lb calves? I know that generally my 60 lb calves don't grow as well as my 100 lb calves. Now I wouldn't be searching out bulls at the top of the BW range because that could be trouble; but i don't have a problem using bulls in the 90-100 lb range on cows. That may be 55-65 lbs for you.</p><p></p><p>I also agree that smaller cows are more profitable from birth to weaning; though your 40% statement isn't quite true; you need to calculate needs using a metabolic weight not true weight. After that weaning period the growthier calves may be more profitable (or not) depending on cost of feed resources, price per lb of calf and marketing opportunities. You can turn over the smaller calves more quickly, but then you need to source in more calves. This increases other costs associated with bringing in new calves. The bigger calves give you a longer growing period; maybe you don't have to bring in more? Anyway that's not what this thread is about.</p></blockquote><p></p>
[QUOTE="Willow Springs, post: 610291, member: 9002"] I agree with what you are saying on cow size; if you check my last posts i have been saying that BW is and should be matched to cow weight. A 1500 lb cow will have a 105 lb calf without trouble (7% of her bodyweight); a 1000 lb cow should only be having 70 lb calves. Now if I have a 60 lb calf from my 1500 lb cow that would be equivalnet to a 40 lb calf on a 1000 lb cow. Now tell me do your 40 lb calves grow as well as your 60 lb calves? I know that generally my 60 lb calves don't grow as well as my 100 lb calves. Now I wouldn't be searching out bulls at the top of the BW range because that could be trouble; but i don't have a problem using bulls in the 90-100 lb range on cows. That may be 55-65 lbs for you. I also agree that smaller cows are more profitable from birth to weaning; though your 40% statement isn't quite true; you need to calculate needs using a metabolic weight not true weight. After that weaning period the growthier calves may be more profitable (or not) depending on cost of feed resources, price per lb of calf and marketing opportunities. You can turn over the smaller calves more quickly, but then you need to source in more calves. This increases other costs associated with bringing in new calves. The bigger calves give you a longer growing period; maybe you don't have to bring in more? Anyway that's not what this thread is about. [/QUOTE]
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