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The Immediate Effect of HCG Upon Plasma Testosterone Levels in the Bull

Den øyeblikkelige effekt av HCG på plasma testosteron nivå hos okse

Acta Veterinaria Scandinavica volume 22, pages 403–408 (1981)Cite this article

Abstract

No effect of HCG upon the plasma testosterone level in 16 bulls was seen the first 5 or 15 min after injection. In 8 bulls receiving 750 or 1500 i.u. HCG by intravenous injection a lag time of 30 min occurred before plasma testosterone response could be measured. The high plateau level of plasma testosterone concentration was reached approximately 1 h after injection.

Following intramuscular injection of 750 i.u. or 1500 i.u. HCG a lag time of 45–60 min was observed for the testicular response measured as elevated plasma testosterone level. The high plateau levels of plasma testosterone in these bulls were reached approximately 1½ h post injection.

Sammendrag

Ingen effekt av HCG på plasma testosteron nivået hos 16 okser kunne påvises de første 5 eller 15 minutter etter injeksjonen. Hos 8 okser som fikk 750 eller 1500 i.u. HCG ved intravenøs injeksjon varte det 30 minutter før en økning av plasma testosteron nivået kunne påvises. Høyt, stabilt plasma testosteron nivå kom ca. 1 time etter injeksjonen.

Etter intramuskulær injeksjon av 750 eller 1500 i.u. HCG ble det observert en ventetid på 45–60 minutter før testikulær respons målt som øket plasma testosteron nivå. Høyt, stabilt plasma testosteron hos disse oksene ble målt ca 1½ time etter injeksjonen.

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Authors and Affiliations

  1. Department of Physiology, Veterinary College of Norway, P.O. Box 8146, Dep., Oslo 1, Norway

    A. Sundby

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  1. A. Sundby
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The investigation was financially supported by the Agricultural Research Council of Norway.

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Sundby, A. The Immediate Effect of HCG Upon Plasma Testosterone Levels in the Bull. Acta Vet Scand 22, 403–408 (1981). https://doi.org/10.1186/BF03548665

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Keywords

Acta Veterinaria Scandinavica

ISSN: 1751-0147