Effects of early weaning on performance of cow/calf pairs

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dc.contributor.author Koch, E.A.
dc.contributor.author Christopher, J.A.
dc.contributor.author Marston, T.T.
dc.contributor.author Breiner, Ryan M.
dc.contributor.author Unruh, John A.
dc.date.accessioned 2010-08-03T17:52:38Z
dc.date.available 2010-08-03T17:52:38Z
dc.date.issued 2010-08-03T17:52:38Z
dc.identifier.uri http://hdl.handle.net/2097/4408
dc.description.abstract Commercial cow/calf pairs (Angus based, n=103) were used to determine the effect of calf weaning age on cow body weight and body condition score (scale=1 to 9) and calf performance in terms of subcutaneous fat and marbling deposition. Only cows with male progeny (steers, n=52; bulls, n=51) were used in this study. Treatments were: 1) early-weaned bulls, 2) early-weaned steers, 3) traditionally weaned bulls, and 4) traditionally weaned steers. Cow/calf pairs grazed pastures at four different locations. Calving began February 1, 2003, and ended in early April. In the early-weaned treatment group, calves were weaned June 25, with an average age of 115 days. In the late-weaned treatment group, calves were weaned October 6, with an average age of 218 days. The data indicate that the cows in the early-weaned treatment group gained 121 lb more weight (P<0.0001), had 0.13 inches more external backfat (P<0.0001), and had an average body condition score 1.2 greater (P<.0001) than their late-weaned counterparts. All steer calves were implanted before they entered the feedlot. Early weaning and subsequent feedlot placement produced heavier calves at approximately nine months of age. Ultrasound technology indicated that early-weaned calves had greater backfat and marbling scores 26 days after feedlot placement than did traditionally weaned calves. However, the early–weaned bulls had less backfat at a similar average weight to their steer contemporaries. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Cattlemen's Day, 2004 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 04-242-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 923 en_US
dc.subject Beef en_US
dc.subject Early weaning en_US
dc.subject Cow/calf pairs en_US
dc.title Effects of early weaning on performance of cow/calf pairs en_US
dc.type Conference paper en_US
dc.date.published 2004 en_US
dc.citation.epage 87 en_US
dc.citation.spage 84 en_US
dc.description.conference Cattlemen's Day, 2004, Kansas State University, Manhattan, KS, March 5, 2004 en_US
dc.contributor.authoreid rbreiner en_US
dc.contributor.authoreid junruh en_US

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