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Correlation between ultrasonographic findings and serum testosterone concentration in prepubertal and peripubertal colts.
Am J Vet Res. 1994 Apr; 55(4):450-7.AJ

Abstract

Correlation between serum testosterone concentration and morphometric findings from ultrasonography of the accessory sex glands in peripubertal colts was investigated during pubertal development. Nineteen colts of initial age ranging from 5 to 12 months were monitored over a 13-month period. Serum testosterone concentration was determined on a biweekly basis, and accessory sex gland development was ultrasonographically monitored once a month. Notwithstanding individual variation, there was significant correlation (r = 0.913; P < 0.01) between increasing serum testosterone concentration and the onset of developmental changes involving the accessory sex glands. As colts entered their 2-year-old year with relatively immature reproductive tracts, compared with mature stallions, there was still a significant seasonal effect on serum testosterone concentration and accessory sex gland measurements (P < 0.05). Ultrasonography was confirmed as a valuable noninvasive method of monitoring and assessing peripubertal accessory sex gland development in colts.

Authors+Show Affiliations

Department of Veterinary Science, Gluck Equine Research Center, University of Kentucky, Lexington 40546-0099.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

8017687

Citation

Holyoak, G R., et al. "Correlation Between Ultrasonographic Findings and Serum Testosterone Concentration in Prepubertal and Peripubertal Colts." American Journal of Veterinary Research, vol. 55, no. 4, 1994, pp. 450-7.
Holyoak GR, Little TV, Vernon M, et al. Correlation between ultrasonographic findings and serum testosterone concentration in prepubertal and peripubertal colts. Am J Vet Res. 1994;55(4):450-7.
Holyoak, G. R., Little, T. V., Vernon, M., McCollum, W. H., & Timoney, P. J. (1994). Correlation between ultrasonographic findings and serum testosterone concentration in prepubertal and peripubertal colts. American Journal of Veterinary Research, 55(4), 450-7.
Holyoak GR, et al. Correlation Between Ultrasonographic Findings and Serum Testosterone Concentration in Prepubertal and Peripubertal Colts. Am J Vet Res. 1994;55(4):450-7. PubMed PMID: 8017687.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Correlation between ultrasonographic findings and serum testosterone concentration in prepubertal and peripubertal colts. AU - Holyoak,G R, AU - Little,T V, AU - Vernon,M, AU - McCollum,W H, AU - Timoney,P J, PY - 1994/4/1/pubmed PY - 1994/4/1/medline PY - 1994/4/1/entrez SP - 450 EP - 7 JF - American journal of veterinary research JO - Am J Vet Res VL - 55 IS - 4 N2 - Correlation between serum testosterone concentration and morphometric findings from ultrasonography of the accessory sex glands in peripubertal colts was investigated during pubertal development. Nineteen colts of initial age ranging from 5 to 12 months were monitored over a 13-month period. Serum testosterone concentration was determined on a biweekly basis, and accessory sex gland development was ultrasonographically monitored once a month. Notwithstanding individual variation, there was significant correlation (r = 0.913; P < 0.01) between increasing serum testosterone concentration and the onset of developmental changes involving the accessory sex glands. As colts entered their 2-year-old year with relatively immature reproductive tracts, compared with mature stallions, there was still a significant seasonal effect on serum testosterone concentration and accessory sex gland measurements (P < 0.05). Ultrasonography was confirmed as a valuable noninvasive method of monitoring and assessing peripubertal accessory sex gland development in colts. SN - 0002-9645 UR - https://www.unboundmedicine.com/medline/citation/8017687/Correlation_between_ultrasonographic_findings_and_serum_testosterone_concentration_in_prepubertal_and_peripubertal_colts_ DB - PRIME DP - Unbound Medicine ER -