Implant sequence effects in intact male Holstein veal calves: Carcass characteristics

L. L. Wilson, J. L. Smith, D. L. Swanson, Edward William Mills

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Seven sequences of growth promotant implants were used in intact male Holstein veal calves (n = 443). Implants were administered on d 0 (within 4 d after arrival at the veal barn), 42, and 84. The implants used were placebo (0), Z (36 mg zeranol), ET (20 mg estradiol, 200 mg testosterone), EP/2 (10 mg estradiol, 100 mg progesterone), EP (20 mg estradiol, 200 mg progesterone), and EBA (24 mg estradiol, 120 mg trenbolone acetate). The following sequences were compared: 0-0-0 (negative control), 0-ET-ET, Z-ET-ET, 0-EP-EP, Z-EP-EP, 0-EP/2-EBA, and Z-O-EBA. Sequences 0-EP-EP, Z-EP-EP, and 0-EP/2-EBA increased (P < .05) carcass weight from 3.3 to 3.9% compared to nonimplanted controls. There were no differences (P > .05) in percentage of carcass weight accounted for by the fore vs rear halves of carcasses, suggesting there was no difference in the distribution of weight. Although there were differences in longissimus area, the results were not consistent, except that there was a trend for longissimus area to be increased by the use of estrogenic-androgenic implants (ET and EBA). There were no differences among implant sequences for carcass conformation, fat cover, muscle texture, marbling/ feathering, muscle color, or muscle chemical composition. Of four implant sequences (0-0-0, 0-ET-ET, 0-EP-EP, and 0-EP/2-EBA) tested for differences in Warner-Bratzler shear force tenderness, the latter two sequences averaged higher (P < .05) for shear force than did the negative control. These results suggest that aggressive implant strategies in young, intact Holstein bull calves (raised as veal) have minimal effects on carcass characteristics.

Original languageEnglish (US)
Pages (from-to)3133-3139
Number of pages7
JournalJournal of animal science
Volume77
Issue number12
DOIs
StatePublished - Jan 1 1999

Fingerprint

veal calves
carcass characteristics
estradiol
Estradiol
Holstein
veal
Muscles
muscles
shear stress
Progesterone
progesterone
Trenbolone Acetate
Zeranol
zeranol
trenbolone
Weights and Measures
marbling
barns
carcass weight
testosterone

All Science Journal Classification (ASJC) codes

  • Food Science
  • Animal Science and Zoology
  • Genetics

Cite this

Wilson, L. L. ; Smith, J. L. ; Swanson, D. L. ; Mills, Edward William. / Implant sequence effects in intact male Holstein veal calves : Carcass characteristics. In: Journal of animal science. 1999 ; Vol. 77, No. 12. pp. 3133-3139.
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abstract = "Seven sequences of growth promotant implants were used in intact male Holstein veal calves (n = 443). Implants were administered on d 0 (within 4 d after arrival at the veal barn), 42, and 84. The implants used were placebo (0), Z (36 mg zeranol), ET (20 mg estradiol, 200 mg testosterone), EP/2 (10 mg estradiol, 100 mg progesterone), EP (20 mg estradiol, 200 mg progesterone), and EBA (24 mg estradiol, 120 mg trenbolone acetate). The following sequences were compared: 0-0-0 (negative control), 0-ET-ET, Z-ET-ET, 0-EP-EP, Z-EP-EP, 0-EP/2-EBA, and Z-O-EBA. Sequences 0-EP-EP, Z-EP-EP, and 0-EP/2-EBA increased (P < .05) carcass weight from 3.3 to 3.9{\%} compared to nonimplanted controls. There were no differences (P > .05) in percentage of carcass weight accounted for by the fore vs rear halves of carcasses, suggesting there was no difference in the distribution of weight. Although there were differences in longissimus area, the results were not consistent, except that there was a trend for longissimus area to be increased by the use of estrogenic-androgenic implants (ET and EBA). There were no differences among implant sequences for carcass conformation, fat cover, muscle texture, marbling/ feathering, muscle color, or muscle chemical composition. Of four implant sequences (0-0-0, 0-ET-ET, 0-EP-EP, and 0-EP/2-EBA) tested for differences in Warner-Bratzler shear force tenderness, the latter two sequences averaged higher (P < .05) for shear force than did the negative control. These results suggest that aggressive implant strategies in young, intact Holstein bull calves (raised as veal) have minimal effects on carcass characteristics.",
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Implant sequence effects in intact male Holstein veal calves : Carcass characteristics. / Wilson, L. L.; Smith, J. L.; Swanson, D. L.; Mills, Edward William.

In: Journal of animal science, Vol. 77, No. 12, 01.01.1999, p. 3133-3139.

Research output: Contribution to journalArticle

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