108 Effect of Revalor-XH, Revalor-200, and combination Revalor-IH/Revalor-200 on Yearling Heifer Growth Performance and Carcass Characteristics. (30th November 2020)
- Record Type:
- Journal Article
- Title:
- 108 Effect of Revalor-XH, Revalor-200, and combination Revalor-IH/Revalor-200 on Yearling Heifer Growth Performance and Carcass Characteristics. (30th November 2020)
- Main Title:
- 108 Effect of Revalor-XH, Revalor-200, and combination Revalor-IH/Revalor-200 on Yearling Heifer Growth Performance and Carcass Characteristics
- Authors:
- Carlson, Zachary
Coulson, Caitlin
Erickson, Galen E
Jordon, D J
Cooper, Rob
Scott, Tony
Bundy, Sheri
Nuttelman, Brandon - Abstract:
- Abstract: A commercial feedlot trial utilizing 1, 728 crossbred heifers (initial BW = 410; SD = 10 kg) examined three implant strategies on growth performance and carcass characteristics. Treatments included: 1) Revalor-200 (REV-200) on d 1; 2) Revalor-IH on d 1 and Revalor-200 on d 56 (REV-IH/200; range 54-58 d) to target approximately 80 d with terminal implant; and 3) Revalor-XH (REV-XH) on d 1. Heifers implanted with REV-IH/200 combination had greater carcass-adjusted final BW and G:F compared to REV-200 and REV-XH (637 vs. 630 and 630 kg; 0.146 vs. 0.140 and 0.140, respectively; P ≤ 0.05). There were no differences (P ≥ 0.24) observed for live performance including final BW, DMI, or ADG on a live basis among implant strategies. Hot carcass weights and LM area improved for REV-IH/200 implanted heifers relative to REV-200 and REV-XH implanted heifers (397 vs. 393 and 393 kg; 90.9 vs. 87.7 and 88.7 cm 2, respectively; P ≤ 0.05). Dressing percent was greater for REV-IH/200 implanted heifers compared to REV-200 and REV-XH (62.7 vs. 62.1 and 62.2 %, respectively; P = 0.01). Marbling score and 12 th -rib fat thickness were not different (P ≥ 0.12) among implant treatments. Calculated yield grades improved for REV-IH/200 compared to REV-200 (3.63 vs. 3.82, respectively; P = 0.05). Heifers implanted with REV-IH/200 had a significant (P < 0.01) shift to a lower calculated yield grade distribution compared to REV-200 and REV-XH implanted heifers. The REV-IH/200 combinationAbstract: A commercial feedlot trial utilizing 1, 728 crossbred heifers (initial BW = 410; SD = 10 kg) examined three implant strategies on growth performance and carcass characteristics. Treatments included: 1) Revalor-200 (REV-200) on d 1; 2) Revalor-IH on d 1 and Revalor-200 on d 56 (REV-IH/200; range 54-58 d) to target approximately 80 d with terminal implant; and 3) Revalor-XH (REV-XH) on d 1. Heifers implanted with REV-IH/200 combination had greater carcass-adjusted final BW and G:F compared to REV-200 and REV-XH (637 vs. 630 and 630 kg; 0.146 vs. 0.140 and 0.140, respectively; P ≤ 0.05). There were no differences (P ≥ 0.24) observed for live performance including final BW, DMI, or ADG on a live basis among implant strategies. Hot carcass weights and LM area improved for REV-IH/200 implanted heifers relative to REV-200 and REV-XH implanted heifers (397 vs. 393 and 393 kg; 90.9 vs. 87.7 and 88.7 cm 2, respectively; P ≤ 0.05). Dressing percent was greater for REV-IH/200 implanted heifers compared to REV-200 and REV-XH (62.7 vs. 62.1 and 62.2 %, respectively; P = 0.01). Marbling score and 12 th -rib fat thickness were not different (P ≥ 0.12) among implant treatments. Calculated yield grades improved for REV-IH/200 compared to REV-200 (3.63 vs. 3.82, respectively; P = 0.05). Heifers implanted with REV-IH/200 had a significant (P < 0.01) shift to a lower calculated yield grade distribution compared to REV-200 and REV-XH implanted heifers. The REV-IH/200 combination provided 280 mg of trenbolone acetate (TBA) and 28 mg estradiol (E2), while total active ingredient doses for REV-200 and REV-XH are 200 mg TBA and 20 mg E2. Thus, the greater concentration of TBA and E2 provided by REV-IH/200 combination improved carcass adjusted growth and carcass performance compared to the non-coated REV-200 implant and partially coated REV-XH implant. … (more)
- Is Part Of:
- Journal of animal science. Volume 98(2020)Supplement 3
- Journal:
- Journal of animal science
- Issue:
- Volume 98(2020)Supplement 3
- Issue Display:
- Volume 98, Issue 3 (2020)
- Year:
- 2020
- Volume:
- 98
- Issue:
- 3
- Issue Sort Value:
- 2020-0098-0003-0000
- Page Start:
- 130
- Page End:
- 130
- Publication Date:
- 2020-11-30
- Subjects:
- Heifer -- Implant -- Revalor
Livestock -- Periodicals
Livestock
Electronic journals
Periodicals
636.005 - Journal URLs:
- https://dl.sciencesocieties.org/publications/jas/index ↗
http://www.asas.org/jas/ ↗
https://academic.oup.com/jas ↗
http://www.oxfordjournals.org/ ↗ - DOI:
- 10.1093/jas/skaa054.224 ↗
- Languages:
- English
- ISSNs:
- 0021-8812
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 15199.xml