A randomized trial and multisite pooled trial analyses comparing effects of two hormonal implant programs and differing days-on-feed on carcass characteristics and feedlot performance of beef heifers

Horton, Lucas M.; Depenbusch, Brandon E.; Holland, Ben P; Word, Alyssa B; Streeter, M. N.; Hutcheson, J. P.; Renter, David G.

doi:10.1093/tas/txac162

Cited by 2 publications

(24 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of hormonal and steroidal implants has aided in production efficiency improvements ( Reinhardt and Wagner, 2014 ; Smith and Johnson, 2020 ) that enable greater finished weights. Use of various implants and (or) extending days-on-feed (DOF) in the feedlot for both steers and heifers has received considerable past research ( Herschler et al., 1995 ; Sissom et al., 2007 ; Parr et al., 2011 ; Rathmann et al., 2012 ; Reinhardt and Wagner, 2014 ; Hilscher et al., 2016 ; Smith et al., 2019 , 2020 ; Ohnoutka et al., 2021 ; Word et al., 2021 ; Horton et al., 2022 ). However, while most prior studies mention economic importance or implications, none (to the knowledge of the authors) have performed a concurrent economic analysis.…”

Section: Introductionmentioning

confidence: 99%

“… Horton et al. (2022) evaluated feedlot performance and carcass characteristics of beef feedlot heifers administered 2 alternative implant programs and fed for differing DOF with pooled data from 3 randomized controlled trials.…”

Section: Introductionmentioning

confidence: 99%

“…To summarize, sensitivity analyses would provide stakeholders with the estimated impact and implications of individual pricing components on economic returns. Using the randomized controlled trial data described by Horton et al. (2022) , the primary objective was to evaluate the effects of alternative implant programs and differing DOF on net returns of beef feedlot heifers, along with the impact of varying key economic factors using sensitivity analyses.…”

Section: Introductionmentioning

confidence: 99%

“…Data used for economic sensitivity analyses are from pooled clinical trials, for which feedlot performance and carcass characteristics have been previously summarized by Horton et al. (2022) .…”

Section: Introductionmentioning

confidence: 99%

“…The 2 Texas trials have been described independently ( Smith et al., 2019 ; experiments 1 and 2) as has the Kansas trial ( Horton et al., 2022 ). In Smith et al.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Impacts of economic factors influencing net returns of beef feedlot heifers administered two implant programs and fed for differing days-on-feed from pooled randomized controlled trials

Horton,

Depenbusch,

Schroeder

et al. 2024

Translational Animal Science

View full text Add to dashboard Cite

The objective of this research was to evaluate the effects of 2 implant programs and differing days-on-feed (DOF) on net returns of beef feedlot heifers using sensitivity analyses of key economic factors. Crossbred beef heifers [n = 10,583; initial weight 315 kg (± 20.1 SD)] were enrolled across 3 trials (1 Kansas, 2 Texas feedlot trials). Heifers were blocked by arrival and randomly allocated to 1 of 6 pens, resulting in a total of 144 pens and 24 blocks. Pen was randomly assigned to treatment as a 2 × 3 factorial. Implant programs were: IH+200 – Revalor-IH at initial processing, and a terminal implant after approximately 90 DOF (Revalor-200), or, XH – a single implant at initial processing (Revalor-XH). The DOF treatments were: heifers fed to a standard baseline endpoint (BASE) or heifers fed for an additional +21 or +42 d beyond BASE. Pen-level partial budgets were used for economic sensitivity analyses, which varied price points of single pricing components with all other components fixed. Variable components were live-fed cattle prices, base carcass prices (i.e. dressed), Choice-Select spread (CS-spread), and feed and yardage prices (FYP). For each, a Low, Mid-Low, Middle, Mid-High, and High price was chosen. Linear mixed models were fit for statistical analyses (α = 0.05). There were no significant 2-way interactions (P -values ≥ 0.14). Regardless of the variable component evaluated, XH heifers had poorer net returns than IH+200 at all prices (P ≤ 0.04). Selling live, the +21 and (or) +42 heifers had lower net returns than BASE at every fed cattle price point (P < 0.01). Selling dressed, the +21 and (or) +42 heifers had lower returns than BASE at Low, Mid-Low, and Middle fed cattle base prices (P < 0.01); there were no significant DOF differences at Mid-High, or High prices (P ≥ 0.24). Net returns were lower for +42 than BASE at all CS-spreads (P ≤ 0.03), while BASE and +21 did not differ significantly. Longer DOF had lower net returns than BASE when selling live at every FYP (P < 0.01) except at the Low price (P = 0.14). Selling dressed, there was no significant effect of DOF at Low or Mid-Low FYP (P ≥ 0.11); conversely, extended DOF had lower net returns than BASE at Middle, Mid-High, and High FYP (P < 0.01). Overall, there was minimal economic evidence to support extending feedlot heifer DOF beyond the BASE endpoint, and when feeding longer, larger reductions in return were observed when marketing live as opposed to dressed.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The 2 Texas trials have been described independently ( Smith et al., 2019 ; experiments 1 and 2) as has the Kansas trial ( Horton et al., 2022 ). In Smith et al.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations