Effect of implantation and melengestrol acetate feeding on blood serum profiles and performance of heifers

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dc.contributor.author Brandt, Robert T., Jr.
dc.contributor.author Milton, C.T.
dc.contributor.author Campbell, N.
dc.contributor.author Titgemeyer, Evan C.
dc.date.accessioned 2010-09-10T20:02:52Z
dc.date.available 2010-09-10T20:02:52Z
dc.date.issued 2010-09-10T20:02:52Z
dc.identifier.uri http://hdl.handle.net/2097/4912
dc.description.abstract Payout characteristics of Revalor-H and Finaplix-H were measured in 30 heifers (678 pounds) assigned to one of six treatments: 1) negative control, 2) melengestrol acetate (MGA) (.5 mg/hd/d), 3) Finaplix-Hfi, 4) Finaplix-H + MGA, 5) Revalor-Hfi, and 6) Revalor-H + MGA. Blood samples were collected by jugular puncture on days 0, 1, 3, 5, 7, 13, 21, 28, 42, 56, 84, 112, and 140. Following implantation with either Revalor-H or Finaplix-H, serum trenbolone (TB) increased markedly at 1 and 3 days after implantation, then decreased through day 42. A second peak in serum TB was observed on day 56. Between days 56 and 84, a drop in serum TB was observed. Although TB in heifers implanted with Revalor-H or Finaplix-H was lowest between 84 and 140 days, the observed TB may still have been adequate to modify heifer performance over this period of time. Average daily gain and feed efficiency demonstrated an implant MGA interaction. Heifers with no implant responded to MGA supplementation with increased rate of gain, whereas heifers receiving either Revalor-H or Finaplix-H had less weight gain when fed MGA. en_US
dc.publisher Kansas State University. Agricultural Experiment Station and Cooperative Extension Service en_US
dc.relation.isPartOf Cattlemen’s Day, 1996 en_US
dc.relation.isPartOf Kansas Agricultural Experiment Station contribution; no. 96-334-S en_US
dc.relation.isPartOf Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 756 en_US
dc.subject Beef en_US
dc.subject Implants en_US
dc.subject Heifers en_US
dc.title Effect of implantation and melengestrol acetate feeding on blood serum profiles and performance of heifers en_US
dc.type Conference paper en_US
dc.date.published 1996 en_US
dc.citation.epage 108 en_US
dc.citation.spage 106 en_US
dc.description.conference Cattlemen's Day, 1996, Kansas State University, Manhattan, KS, March 1, 1996 en_US
dc.contributor.authoreid etitgeme en_US

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