Immunization against GnRH in the male camel (Camelus dromedarius): Effects on sexual behavior, testicular volume, semen characteristics and serum testosterone concentrations

The effect of immunization against gonadotrophin releasing hormone (GnRH) on sexual behavior, total scrotal size, semen characteristics and serum concentrations of testosterone, was evaluated for 24 wks in sexually mature camels (Camelus dromedarius). Eight bull camels were randomly divided into a t...

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Bibliographic Details
Published in:Theriogenology 2012-09, Vol.78 (5), p.1102-1109
Main Authors: Ghoneim, I.M, Waheed, M.M, Al-Eknah, M.M, El-Bahr, S.M
Format: Article
Language:English
Subjects:
Acrosin
Acrosin amidase
acrosome
amidase
Animals
antigens
Camel
Camelus - blood
Camelus - physiology
dromedaries
GnRH
gonadotropin-releasing hormone
Gonadotropin-Releasing Hormone - immunology
Immunization
Immunization Schedule
Immunization, Secondary
libido
Male
ovalbumin
semen
Semen - physiology
Sexual behavior
Sexual Behavior, Animal
Sperm morphology
Testicular volume
Testis
Testosterone
Testosterone - blood
Vaccine immunization
Vaccines, Contraceptive - immunology
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Summary:The effect of immunization against gonadotrophin releasing hormone (GnRH) on sexual behavior, total scrotal size, semen characteristics and serum concentrations of testosterone, was evaluated for 24 wks in sexually mature camels (Camelus dromedarius). Eight bull camels were randomly divided into a treatment and control group. Four male camels were immunized using 2 mg GnRH – tandem-dimer conjugated to ovalbumin, (Pepscan Systems, the Netherlands) administered subcutaneously, 4 wks apart. Control male camels received the same amount of saline solution. Significant decline in serum testosterone level was observed in three immunized camels out of four, whereas one camel showed no effect. The testosterone levels reached to
ISSN:0093-691X
1879-3231
DOI:10.1016/j.theriogenology.2012.05.005