A smaller live calf is much better then a great big dead one!
As a result of many years of strong selection for more frame size in most of our purebred herds, some bloodlines have also increased birth weights dramatically. If bulls with this genetic makeup are used on big cows (as in most purebred herds), they might not create any problems. However, if they are used to service first calf heifers or smaller cows, problems often do arise. As a result of some of these problem-cases, the Herefords as a breed are getting a bad name. Since the high birth weight bloodlines are known to most breeders, to stay away from them is only good long term management. We have practiced this policy for some time in our herd, but the fact is that we still have a few calves with weights higher than what we like. With all this in mind we feel that it is very important that we show the birth weights to our customers and let them decide what is acceptable to them.
It would also be good to remember that a build up of high birth weights over several generations cannot be corrected completely by one light birth weight bull. His genetic input to each of his calves is only at the rate of 50%.
To demonstrate that we have a solid background of reasonable birth weights in our herd, the following is a list of the lighter birth weight bulls we have used since we started to weigh our calves at birth.
Light Birth Weight Sires Used In Our Herd.
|Name of Bull||Number of Calves born in our herd.||Birth Weight Averages of Calves, in lb.|
|HU Wetmore Domino 1S||4||67|
|Britisher Domino AGA 35V||6||73|
|Britisher Wetmore AGA 50Y||17||83|
|DP Britisher AGA 46E||43||80|
|Mr. Mo Le 47F||52||78|
|46E Britisher AGA 15H||150||79|
|Britisher Advancer AGA 40K||42||79|
|GU 46E Britisher 51K||59||82|
|SJS L Britisher 31 Dom Lad 4K||20||83|
|LCI Advancer Lad 23L||35||81|
|93J Standard AGA 1M||21||80|
|93J Standard AGA 128M||112||83|
|1M Standard AGA 13P||40||82|
|4K Britisher AGA 52R||76||84|
|DMF 95J Standard Lad 26S||37||81|
|AGA 47F Domino 26W||28||78|
|CTY Pacific W70||30||81|
|AGA 4S Standard ET 4X||8||79|
|AGA 103W Standard 98Y||14||81|
|AGA 10S Standard 137Y||2||71|
|CTY Centurion Y960||12||80|
|AGA 39X Standard 82Z||7||72|
|AGA 26W Domino 150Z||7||83|
|AGA 13X Britisher 37B||10||82|
|AGA Centenial 99B||13||74|
|CTY Brigader 24B||19||83|
|AGA 852 Stanmore ET 9C||57||83|
|AGA 28Z Domino 189C||10||82|
|AGA 47F Domino 23D||32||82|
|AGA 63T Standard 24E||24||84|
|AGA 303Y Standard 53E||11||78|
|AGA 37B Britisher 154F||7||72|
This information was gathered from "Progeny of Sire Overlay" from the Canadian Hereford Association, T.H.E. Program.
We have found that most of our customers prefer a smaller live calf over a great big dead one!
Last Updated 18 Apr 2003
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