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Articles and Other References
General References
Symposium: Impact of Implants on Performance and
Carcass Value of Beef Cattle. 1997. F. N. Owens (Ed.), Oklahoma Agric. Exp. Sta. P-957,
Stillwater, OK. (This outstanding symposium includes 27 articles by experts in the
field of growth-promoting implants.)
Guiroy, P. J.,
L. O. Tedeschi, D. G. Fox, and J. P. Hutcheson. 2002. The
effects of implant strategy on finished body weight of beef
cattle. J. Anim. Sci. 80:1791-1800.
Nichols, W.
T., M. L. Galyean, D. U. Thomson, and J. P. Hutcheson. 2002.
Review: Effect of Steroid Implants on the Tenderness of Beef.
Prof. Anim. Sci. 18:202-210.
Mode of Action References
White M. E.,
B. J. Johnson, M. R. Hathaway, and W. R. Dayton.
2003. Growth factor messenger RNA levels in muscle and liver of
steroid-implanted and nonimplanted steers. J. Anim Sci.
81:965-972.
Dunn J. D., B. J. Johnson, J. P. Kayser, A. T. Waylan, E. K.
Sissom, and J. S. Drouillard. 2003. Effects of flax
supplementation and a combined trenbolone acetate and estradiol
implant on circulating insulin-like growth factor-I messenger
RNA levels in beef cattle. J. Anim. Sci 81:3028-3034.
Breier, B. H., P. D. Gluckman, and J. J. Bass.
1988. The somatotrophic axis in young steers: Influence of nutritional status and
oestradiol-17b on hepatic high- and low-affinity somatotrophic binding sites. J.
Endocrinology 118:169.
Breier, B. H., P. D. Gluckman, and J. J. Bass.
1988. Influence of nutritional status and oestradiol-17b on plasma growth hormone,
insulin-like growth factors-I and -II and the response to exogenous growth hormone in
young steers. J. Endocrinology 118:243.
Enright, W. J., J. F. Quirke, P. D. Gluckman, B.
H. Greier, L. G. Kennedy, I. C. Hart, J. R. Roche, A. Coert, and P. Allen. 1990. Effects
of long-term administration of pituitary-derived bovine growth hormone and estradiol on
growth of steers. J. Anim. Sci. 68:2345.
Gopinath, R., and W. D. Kitts. 1984. Growth
hormone secretion and clearance rates in growing beef steers implanted with estrogenic
anabolic compounds. Growth 48:499.
Gopinath, R., and W. D. Kitts. 1984. Plasma
thyroid hormone concentrations in growing beef steers implanted with estrogenic anabolic
growth promotants. Growth 48:515.
Grigsby, M. E., and A. Trenkle. 1986. Plasma
growth hormone, insulin, glucocorticoids and thyroid hormone in large, medium and small
breeds of steers with and without an estradiol implant. Dom. Anim. Endocrinology 3:261.
Hayden, J. M., W. G. Bergen, and R. A. Merkel.
1992. Skeletal muscle protein metabolism and serum growth hormone, insulin, and cortisol
concentrations in growing steers implanted with estradiol-17b , trenbolone acetate, or
estradiol-17b plus trenbolone acetate. J. Anim. Sci. 70:2109.
Hongerholt, D. D., B. A. Crooker, J. E Wheaton,
K. M. Carlson, and D. M. Jorgenson. 1992. Effects of a growth hormone-releasing factor
analogue and an estradiol-trenbolone acetate implant on somatotropin, insulin-like growth
factor I, and metabolite profiles in growing Hereford steers. J. Anim. Sci. 70:1439.
Hunt,
D. W., D. M. Henricks, G. C. Skelley, and
L. M. Grimes. 1991. Use of trenbolone acetate and estradiol in intact and castrate male
cattle. Effect on growth, serum hormones, and carcass characteristics. J. Anim. Sci.
69:2452.
Johnson, B. J., M. R. Hathaway, P. T. Anderson,
J. C. Meiske, and W. R. Dayton. 1996. Stimulation of circulating insulin-like growth
factor I (IGF-1) and insulin-like growth factor binding proteins (IGFBP) due to
administration of a combined trenbolone acetate and estradiol implant in feedlot cattle.
J. Anim. Sci. 74:372.
Meyer, H. H. D., and M. Rapp. 1985. Estrogen
receptors in skeletal muscle. J. Anim. Sci. 60:294.
Rumsey, T. S., T. H. Elsasser, and S. Kahl.
1996. Roasted soybeans and an estrogenic growth promoter affect growth hormone status and
performance of beef steers. J. Nutr. 126:2880.
Sauerwein, H., and H. H. D. Meyer. 1989.
Androgen and estrogen receptors in bovine skeletal muscle: Relation to steroid-induced
allometric muscle growth. J. Anim. Sci. 67:206.
Carrier, Release Rate, and Blood Level
References
Bartle, S. J., R. L. Preston, R. E. Brown, and
R. J. Grant. 1992, Trenbolone acette/estradiol combinations in feedlot steers:
Dose-response and implant carrier effects. J. Anim. Sci. 70:1326.
Henricks, D. M., R. L. Edwards, K. A. Champe, T.
W. Gettys, G. C. Skelley, Jr., and T. Giminez. 1982. Trenbolone, estradiol-17b and estrone
levels in plasma and tissues and live weight gains of heifers implanted with trenbolone
acetate. J. Anim. Sci. 55:1048.
Ritchie, H. D., S. R. Rust, and D. L. Nielsen.
1990. Payout rate of estradiol benzoate and progesterone from Synovex-C implants. Michigan
Agric. Exp. Sta. Res. Rep. 491, pp 76-77.
Rumsey, T. S., A. C. Hammond, and J. P.
McMurtry. 1992. Response to reimplanting beef steers with estradiol benzoate and
progesterone: Performance, implant absorption pattern, and thyroxine status. J. Anim. Sci.
70:995.
Reproductive Effects References
Bolze, R. P, and L. R. Corah. 1988. Effects of a
single zeranol implant on conception rates and dystocia in primiparous beef heifers. Prof.
Anim. Sci. 4:19.
Cohen, R. D. H., E. D. Janzen, and H. H.
Nicholson. 1987. Effect of repeated implantation with zeranol from birth or weaning on
growth and reproduction in beef heifers. Can. J. Anim. Sci. 67:37.
Deutscher, G. H., L. L. Zerfars, and D. C.
Clanton. 1986. Time of zeranol implantation on growth, reproduction, and calving of beef
heifers. J. Anim. Sci. 62:875.
Pritchard, D. L., T. T. Marshall, D. D.
Hargrove, and T A. Olson. 1989. Effects of creep feeding, zeranol implants and breed type
on beef production. II Reproduction and fat deposition in heifers. J. Anim. Sci. 67:617.
Staigmiller, R. B., R. A. Bellows, and R. E.
Short. 1983. Growth and reproductive traits in beef heifers implanted with zeranol. J.
Anim. Sci. 57:527.
Animal Behavior References
Brower, G. R., and G. H. Kiracofe. 1978. Factors
associated with the buller-steer syndrome. J. Anim. Sci. 46:26.
Dykeman, D. A., L. S. Katz, and R. H. Foote.
1982. Behavioral characteristics of beef steers administered estradiol, testosterone and
dihydrotestosterone. J. Anim. Sci. 55:1303.
Irwin, M. R., D. R. Melendy, M. S. Amoss, and D.
P. Hutcheson. 1979. Roles of predisposing factors and gonadal hormones in the buller
syndrome of feedlot steers. J. Amer. Vet. Med. Assoc. 174:367.
Nutrient-Implant Interaction References
Schoonmaker J.
P., M. J. Cecava, D. B. Faulkner, F. L. Fluharty, H. N. Zerby,
and S. C. Loerch. 2003. Effect of source of energy
and rate of growth on performance, carcass characteristics,
ruminal fermentation, and serum glucose and insulin of
early-weaned steers. J. Anim. Sci. 81:843-855.
Anderson P. T., and R. L. Botts. 1995. Effects
of steroid implants on feed intake. In: Symposium: Intake by Feedlot Cattle, pp 97-104,
Oklahoma Agric. Exp. Sta., P-942.
DiCostanzo, A., and C. M. Zehnder. 1999.
Estimation of protein requirements of feedlot steers. Prof. Anim. Sci. 15:116.
Galyean, M. L. 1996. Protein levels in beef
cattle finishing diets: Industry application, university research, and systems results. J.
Anim. Sci. 74:2860.
Hunter, R. A., and J. E. Vercoe. 1987. Reduction
of energy requirements of steers fed on low-quality roughage diets using trenbolone
acetate. Br. J. Nutr. 58:477.
Lemieux, P. G., F. M. Byers, and G. T.
Schelling. 1988. Anabolic effects on rate, composition and energetic efficiency of growth
in cattle fed forage and grain diets. J. Anim. Sci. 66:1824.
Lemieux, P. G., F. M. Byers, and G. T.
Schelling. 1990. Relationship of anabolic status and phase and rate of growth to
priorities for protein and fat deposition in steers. J. Anim. Sci. 68:1702.
Lobley, G. E., A. Connell, G. S. Mollison, A.
Brewer, C. I. Harris, and V. Buchan. 1985. The effects of a combined implant of trenbolone
acetate and oestradiol-17b on protein and energy metabolism in growing beef steers. B. J.
Nutr. 54:681.
Owens, F. N., D. R. Gill, D. S. Secrist, and S.
W. Coleman. 1995. Review of some aspects of growth and development in feedlot cattle. J.
Anim. Sci. 73:3152.
NRC. 1996. Nutrient Requirements of Beef Cattle
(7th Ed.). National Academy Press, Washington, DC.
Solis, J. C., F. M. Byers, G. T. Schelling, and
L. W. Greene. 1989. Anabolic implant and frame size effects on growth regulation, nutrient
repartitioning and energetic efficiency of feedlot steers. J. Anim. Sci. 67:2792.
Carcass Quality and Cutout References
Barham B. L., J. C. Brooks, J. R. Blanton, Jr., A. D. Herring,
M. A. Carr, C. R. Kerth, and M. F. Miller. 2003. Effects of
growth implants on consumer perceptions of meat tenderness in
beef steers. J. Anim. Sci. 81: 3052-3056.
Kerth C. R.,
J. L. Montgomery, K. J. Morrow, M. L. Galyean, and M. F. Miller.
2003. Protein turnover and sensory traits of longissimus muscle
from implanted and nonimplanted heifers. J. Anim. Sci.
81:1728-1735.
Reiling B. A.,
and D. D. Johnson. 2003. Effects of implant
regimens (trenbolone acetate-estradiol administered alone or in
combination with zeranol) and vitamin D3 on fresh beef color and
quality. J. Anim. Sci. 81:135-142.
Apple, J. K., M. E. Dikeman, D. D. Simms, and G.
Kuhl. 1991. Effects of synthetic hormone implants, singularly or in combinations, on
performance, carcass traits, and longissimus muscle palatability of Holstein steers. J.
Anim. Sci. 69:4437.
Duckett, S. K. D. G. Wagner, F. N. Owens, H. G.
Dolezal, and D. R. Gill. 1996. Effects of estrogenic and androgenic implants on
performance, carcass traits, and meat tenderness in feedlot steers: A review. Prof. Anim.
Sci. 12:205.
Garber, M. J., R. A. Roeder, J. J. Combs, L.
Eldridge, J. C. Miller, D. D. Hinman, and J. J. Ney. 1990. Efficacy of vaginal spaying and
anabolic implants on growth and carcass characteristics in beef heifers. J. Anim. Sci.
68:1469.
Gerken, C. L., J. D. Tatum, J. B. Morgan, and G.
C. smith. 1995. Use of genetically identical (cloned) steers to determine the effects of
estrogenic and androgenic implants on beef quality and palatability characteristics. J.
Anim. Sci. 73:3317.
Hutcheson, D. P., J. P. Rains, and J. W. Paul.
1993. The effects of different implant and feed additive strategies on performance and
carcass characteristics in finishing heifers. A review. Prof. Anim. Sci. 9:132.
Johnson, B. J., P. T. Anderson, J. C. Meiske,
and W. R. Dayton. 1996. Effect of a combined trenbolone acetate and estradiol implant on
feedlot performance, carcass characteristics, and carcass composition of feedlot steers.
J. Anim. Sci. 74:363.
Loy, D D., H. W. Harpster, and E. H. Cash. 1988.
Rate, composition, and efficiency of growth in feedlot steers reimplanted with growth
stimulants. J. Anim. Sci. 66:2668.
Perry, T. C., D. G. Fox, and D. H. Beermann.
1991. Effect of an implant of trenbolone acetate and estradiol on growth, feed efficiency,
and carcass composition of Holstein and beef steers. J. Anim. Sci. 69:4696.
Samber, J. A., J. D. Tatum, M. I. Wray, W. T.
Nichols, J. B. Morgan, and G. C. Smith. 1996. Implant program effects on performance and
carcass quality of finishing steer calves fed for 212 days. J. Anim. Sci. 74:1470.
Thornsberry, R. M. 1993. The effect of zeranol
and trenbolone acetate and estradiol and trenbolone acetate on carcass and performance
parameters of finishing steers. Agri-Practice. 14(5):29.
Wood, J. D., A. V. Fisher, and O. P. Whelehan.
1986. The effects of a combined androgenic-oestrogenic anabolic agent in steers and bulls.
2. Muscle weight distribution, partitioning of body fat, and carcass value. Anim. Prod.
42:213.
Carryover and Lifetime Effects Implant
References
Scheffler J.
M., D. D. Buskirk, S. R. Rust, J. D. Cowley, and M. E. Doumit.
2003. Effect of repeated administration of combination
trenbolone acetate and estradiol implants on growth, carcass
traits, and beef quality of long-fed Holstein steers. J. Anim.
Sci. 81:2395-2400.
Gill, D. R., H. R. Spires, F. E. Bates, B. L.
Peverly, and K. S. Lusby. 1986. Response of fall-born calves to progesterone-estradiol
benzoate implants nad reimplants. J. Anim. Sci. 62:37.
Hardt, P. F., L. W. Greene, and D. K. Lunt.
1995. Alterations in metacarpal characteristics in steers and heifers sequentially
implanted with SynovexÒ from 45 days of birth. J. Anim. Sci. 73:55-62.
Mader, T. L., D. C. Clanton, J. K. Ward, D. E.
Pankaskie, and G. H. Deutscher. 1985. Effect of pre- and post-weaning zeranol implant on
steer calf performance. J. Anim. Sci. 61:546.
Mader, T. L., J. M. Dahlquist, M. H. Sindt, R.
A. Stock, and T. J. Klopfenstein. 1994. Effect of sequential implanting with Synovex on
steer and heifer performance. J. Anim. Sci. 72:1095.
Mader, T. L. 1994. Effect of implant sequence
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McReynolds, W. W., C. T. Gaskins, S. Clark, and
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implanting with zeranol on steer lifetime performance. J. Anim. Sci. 66:2736.
Implant Safety and Tissue Residue References
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