Testicular growth, hormone concentrations, seminal characteristics and sexual behaviour in stallions
نویسندگان
چکیده
منابع مشابه
Influences of season and artificial photoperiod on stallions: testicular size, seminal characteristics and sexual behavior.
To investigate the influence of daylength on the seasonal reproductive cycle of stallions, 21 stallions were assigned to one of three treatments: control, ambient (natural) photoperiod; S-L, 8 h light and 16 h dark (8:16) for 20 wk beginning July 16, 1982 then 16:8 from December 2, 1982 until March 5, 1984; S-S, 8:16 from July 16, 1982 until March 1984. Temperature was not controlled and was si...
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Altrenogest is being administered to young stallions in racing and performance to decrease sexually aggressive behavior, although the effects on fertility are unknown. In young stallions, treatment with altrenogest significantly decreased sperm output, testicular size, and hormone production. Eight weeks was not sufficient for recovery. Authors’ address: Dept. of Animal Science and Food Technol...
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Series of experiments and clinical trials were conducted to evaluate the effects of psychoneurotropic agents on sexual behaviour of stallions. The benzodiazepine derivative, diazepam (Valium), effectively reversed experimentally suppressed precopulatory arousal and response. Diazepam treatment also blocked the negative effect of novel environment on sexual response. The dibenzazepines imipramin...
متن کاملSeasonal effects on seminal quality, plasma hormone concentrations, and GnRH-induced LH response in fertile and subfertile stallions.
Seasonal effects on hormonal and seminal parameters in subfertile stallions have not been well documented and could provide information that is needed to understand the underlying endocrine mechanisms associated with testicular dysfunction. Such information may be useful in developing diagnostic tools to identify those stallions who are candidates for treatment. This investigation characterizes...
متن کاملPuberty in beef bulls: hormone concentrations, growth, testicular development, sperm production and sexual aggressiveness in bulls of different breeds.
Postweaning growth and pubertal traits were studied in Hereford, Angus, Red Poll, Brown Swiss, Hereford-Angus crossbred (HXA) and Angus-Hereford crossbred (AX H) bulls from 7 through 13 months of age. Pubertal factors characterized included body weight, testicular size, hormone concentrations, sexual aggressiveness and sperm production. Puberty was defined as the age at which a bull first produ...
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ژورنال
عنوان ژورنال: Reproduction
سال: 1990
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.0880167