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Effects of a single initial and delayed release implant on arrival compared with a non-coated initial implant and a non-coated terminal implant in heifers fed across various days on feed

Smith, Zachary K.; Holland, Ben P.; Word, Alyssa B.; Crawford, Grant I.; Nichols, Wade N.; Nuttelman, Brandon L.; Streeter, Marshall N.; Hutcheson, John P.; Johnson, Bradley J. (2019)

Two experiments evaluated the effect of implant number, type, and total steroidal dose on live animal performance and carcass traits in heifers fed for three different days on feed (DOF). In experiment 1, heifers (n = ...

Evaluation of coated steroidal implants containing trenbolone acetate and estradiol-17β on live performance, carcass traits, and sera metabolites in finishing steers

Smith, Zachary K.; Thompson, Alex J.; Hutcheson, John P.; Nichols, Wade T.; Johnson, Bradley J. (2018)

Crossbred beef steers (n = 240; 12 pens/treatment; initial BW = 305 ± 17.7 kg) were used in a randomized block design feedlot study to evaluate the influence of coated trenbolone acetate (TBA) and estradiol-17β (E2) implants ...

Dose and release pattern of anabolic implants affects growth of finishing beef steers across days on feed

Parr, S.L.; Chung, K.Y.; Hutcheson, J.P.; Nichols, W.T.; Yates, D.A.; Streeter, M.N.; Swingle, R.S.; Galyean, M.L.; Johnson, Bradley J. (2011)

Four experiments evaluated the effect of implant dose and release pattern on performance and carcass traits of crossbred beef steers. In Exp. 1, steers (4 to 7 pens/treatment; initial BW = 315 kg) were fed an average of ...

Steroid implants and markers of bone turnover in steers

Knetter, S.M.; Baxa, T.J.; Chung, K.Y.; Johnson, Bradley J.; Minton, J.E. (2012)

Steroidal implants are used extensively in beef cattle management to take advantage of welldocumented improvements in growth performance and efficiency. In addition to muscle growth, steroids bring about changes in bone ...

Performance of finishing beef steers in response to anabolic implant and zilpaterol hydrochloride supplementation

Parr, S.L.; Chung, K.Y.; Galyean, M.L.; Hutcheson, J.P.; DiLorenzo, N.; Hales, K.E.; May, M.L.; Quinn, M.J.; Smith, D.R.; Johnson, Bradley J. (2011)

Our objectives were to evaluate the dose/payout pattern of trenbolone acetate (TBA) and estradiol-17β (E2) implants and feeding of zilpaterol hydrochloride (ZH) on performance and carcass characteristics of finishing beef ...

A pooled analysis of six large-pen feedlot studies: effects of a noncoated initial and terminal implant compared with a single initial and delayed-release implant on arrival in feedlot heifers

Smith, Zachary K.; Renter, David G.; Holland, Ben P.; Word, Alyssa B.; Crawford, Grant I.; Nichols, Wade T.; Nuttelman, Brandon L.; Streeter, Marshall N.; Walter, Lee-Anne J.; Hutcheson, John P.; Dicke, Bill; Brandt, Robert T. Jr.; Szasz, Josh I.; Bryant, Tony C.; Pringle, Lois F.G.; Carlson, Zac E.; Erickson, Galen E.; Johnson, Bradley J. (2020)

Randomized complete block design experiments (n = 6 experiments) evaluating steroidal implants (all from Merck Animal Health, Madison, NJ) were conducted in large-pen feedlot research facilities between 2015 and 2018 ...