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Martin TE, Baker B, Miller HW, et al. Circulating androgen levels in the developing boar. Theriogenology. 1984;21(2):357-65doi: 10.1016/0093-691x(84)90420-5.
Martin, T. E., Baker, B., Miller, H. W., & Kellogg, T. F. (1984). Circulating androgen levels in the developing boar. Theriogenology, 21(2), 357-65. https://doi.org/10.1016/0093-691x(84)90420-5
Martin, T E, et al. "Circulating androgen levels in the developing boar." Theriogenology vol. 21,2 (1984): 357-65. doi: https://doi.org/10.1016/0093-691x(84)90420-5
Martin TE, Baker B, Miller HW, Kellogg TF. Circulating androgen levels in the developing boar. Theriogenology. 1984 Feb;21(2):357-65. doi: 10.1016/0093-691x(84)90420-5. PMID: 16725885.
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Theriogenology. 1984 Feb;21(2):357-65. doi: 10.1016/0093-691x(84)90420-5.

Circulating androgen levels in the developing boar.

Theriogenology

T E Martin, B Baker, H W Miller, T F Kellogg

Affiliations

  1. Mid-South Animals Breeders Co-op Mississippi State University Mississippi State, Mississippi 39762 USA.

PMID: 16725885 DOI: 10.1016/0093-691x(84)90420-5

Abstract

Circulating levels of serum androgens were studied for 11 Duroc boars. Jugular blood samples were collected at 2-wk intervals, beginning at 5 wk of age and continuing until 27 wk of age. Testosterone and androstenedione values were determined by radioimmunoassay. Analysis of variance indicated a significant difference among ages in testosterone and androstenedione concentrations. Plasma levels of testosterone were 1.5 to 1.9 ng/ml at 5 to 7 wk, decreased to 0.3 to 0.6 ng/ml between 7 and 17 wk, and then increased to 3.7 ng/ml by the 27th wk of age. Plasma androstenedione tended to be elevated during the 5th through 7th wk (3.5 to 4.9 ng/ml), decreased to 0.9 to 1.6 ng/ml through the 19th wk and then gradually increased through the 27th wk (1.4 to 2.4 ng/ml). A highly significant correlation was observed between testosterone and androstenedione (r=0.39). Testicular volume was shown to be highly correlated with testosterone concentration (r=0.48). During the early life of the pig, the predominant androgen is androstenedione with testosterone becoming the predominant androgen as the boar reaches maturity.

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