Reproductive performance of replacement heifers implanted as young calves or at weaning

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dc.contributor.author Corah, L.R.
dc.contributor.author Spell, A.R.
dc.contributor.author Cook, D.L.
dc.contributor.author Butine, M.D.
dc.contributor.author Anderson, K.
dc.contributor.author Grieger, David M.
dc.date.accessioned 2010-09-02T21:12:51Z
dc.date.available 2010-09-02T21:12:51Z
dc.date.issued 2010-09-02T21:12:51Z
dc.identifier.uri http://hdl.handle.net/2097/4832
dc.description.abstract This study evaluated the effect of implanting potential replacement heifers (n=548) with Component E-C® (10 mg of estradiol and 100 mg of progesterone) between 45 and 120 days of age or at weaning (200 days of age) on future reproductive performance. Trials were conducted at five ranches in Kansas and one in Nebraska. At each location, heifers were allotted to three treatments: no implant (Control), one implant at 45 to 120 days of age (Early- IMP), or one implant at 2 00 days of age (Wean- IMP). No differences were detected among treatments for first service conception rate (55%), overall pregnancy rate (85%), or calving rate (80%). In addition, no differences were observed among treatments for pelvic area, reproductive tract score, or calving difficulty or for birth or weaning weights of their calves. We conclude that implanting replacement heifers with Component E-C early in life or at weaning had no effect on their subsequent reproductive performance. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Cattlemen’s Day, 1997 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 97-309-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 783 en_US
dc.subject Beef en_US
dc.subject Implant en_US
dc.subject Calves en_US
dc.subject Replacement heifers en_US
dc.subject Conception rate en_US
dc.title Reproductive performance of replacement heifers implanted as young calves or at weaning en_US
dc.type Conference paper en_US
dc.date.published 1997 en_US
dc.citation.epage 104 en_US
dc.citation.spage 103 en_US
dc.description.conference Cattlemen's Day, 1997, Kansas State University, Manhattan, KS, March 7, 1997 en_US
dc.contributor.authoreid dgrieger en_US


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