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Breeding / Calving Issues
ABS CE Stars/Magic number for CE?
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<blockquote data-quote="Ebenezer" data-source="post: 1314273" data-attributes="member: 24565"><p>Is extreme calving ease or extreme low birth weight the new Angus fad? Why do you want extreme when good or adequate works? I have found or noted two extremes on the mature cattle that result from extra low BW and high CED bulls. If they are the "curve benders", (and there are outliers in the breed which can have low BW and high growth), then these animals tend to get extra large. If they are low BW and low growth they make small and less useful cattle if the sires are prepotent and will do the same if they are not prepotent but if a breeder stacks generations of them. <u>Breeding for extremes generally produce extremes</u>.</p><p></p><p>We had a similar conversation going on at some other location of Cattle Today a week or so ago. This is a repeat so please overlook if you were in on the other discussion. The best bulls, cows, heifers or whatever we have had were selected for moderation and not for extremes. They are either of two groups: 1-prepotent breeders of a fixed type or 2- sitting in the middle under the bell curve with genes sorted and paired up in pretty good harmony. The sires in this group for us were/are generally + on BW and 0 or slightly lower on CED. If heifers 10 years ago could calve out calves from sires with BWs up to +3, then what is the problem today with the heifers or the sires? Are the EPDs that wrong or has something bad happened to heifers from mainstream bulls?</p></blockquote><p></p>
[QUOTE="Ebenezer, post: 1314273, member: 24565"] Is extreme calving ease or extreme low birth weight the new Angus fad? Why do you want extreme when good or adequate works? I have found or noted two extremes on the mature cattle that result from extra low BW and high CED bulls. If they are the "curve benders", (and there are outliers in the breed which can have low BW and high growth), then these animals tend to get extra large. If they are low BW and low growth they make small and less useful cattle if the sires are prepotent and will do the same if they are not prepotent but if a breeder stacks generations of them. [u]Breeding for extremes generally produce extremes[/u]. We had a similar conversation going on at some other location of Cattle Today a week or so ago. This is a repeat so please overlook if you were in on the other discussion. The best bulls, cows, heifers or whatever we have had were selected for moderation and not for extremes. They are either of two groups: 1-prepotent breeders of a fixed type or 2- sitting in the middle under the bell curve with genes sorted and paired up in pretty good harmony. The sires in this group for us were/are generally + on BW and 0 or slightly lower on CED. If heifers 10 years ago could calve out calves from sires with BWs up to +3, then what is the problem today with the heifers or the sires? Are the EPDs that wrong or has something bad happened to heifers from mainstream bulls? [/QUOTE]
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