Testosterone concentrations, testes weight and morphology of mule drakes (Muscovy drake X Khaki Campbell)

N. Snapir; J. Rulf; A. Meltzer; G. Gvaryahu; I. Rozenboim; B. Robinzon

doi:10.1080/00071669888791

Testosterone concentrations, testes weight and morphology of mule drakes (Muscovy drake X Khaki Campbell)

N. Snapir, J. Rulf, A. Meltzer, G. Gvaryahu^*, I. Rozenboim, B. Robinzon

^*Corresponding author for this work

Department of Animal Sciences

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

1. Mule ducks were produced by naturally mating Muscovy drakes and Khaki Campbell ducks. 2. Semen was collected from 6-month-old mule drakes via an artificial vagina. The fluid was clear without any spermatozoa or spermatids. 3. Testes from 27-week-old mule drakes were smaller in size than those of Khaki Campbell drakes but heavier than Muscovy males of the same age. Histological sections of these testes revealed that spermatogenesis was not complete. 4. Testosterone concentration in the mule drakes was higher than in Muscovy males but similar to Khaki Campbell drakes. 5. Mule drakes have strong sexual drives as a result of high concentrations of testosterone, but, because spermatogenesis is incomplete, their semen had no sperm.

Original language	English
Pages (from-to)	572-574
Number of pages	3
Journal	British Poultry Science
Volume	39
Issue number	4
DOIs	https://doi.org/10.1080/00071669888791
State	Published - Sep 1998

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abstract = "1. Mule ducks were produced by naturally mating Muscovy drakes and Khaki Campbell ducks. 2. Semen was collected from 6-month-old mule drakes via an artificial vagina. The fluid was clear without any spermatozoa or spermatids. 3. Testes from 27-week-old mule drakes were smaller in size than those of Khaki Campbell drakes but heavier than Muscovy males of the same age. Histological sections of these testes revealed that spermatogenesis was not complete. 4. Testosterone concentration in the mule drakes was higher than in Muscovy males but similar to Khaki Campbell drakes. 5. Mule drakes have strong sexual drives as a result of high concentrations of testosterone, but, because spermatogenesis is incomplete, their semen had no sperm.",

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AU - Snapir, N.

AU - Rulf, J.

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AU - Gvaryahu, G.

AU - Rozenboim, I.

AU - Robinzon, B.

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Testosterone concentrations, testes weight and morphology of mule drakes (Muscovy drake X Khaki Campbell)

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