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Relationships between physiological and behavioral responses of goat bucks in mating season

Serhat Karaca et al · Sociedade Brasileira de Zootecnia

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A survey of dairy calf management practices in some producing regions in Brazil

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ABSTRACT The objective of this study was to determine the sexual parameters in young bucks with different sexual activity and the effect of experience (age) on sexual parameters in bucks. Fifteen young, sexually inexperienced (SI) and five adult, sexually experienced (SE) Saanen × Hair goat crossbred bucks were used in this study. Bucks were individually exposed to three estrus does for 15-min periods during four sexual performance tests, which were carried out every other day to determine some sexual behavior traits such as flehmen response, reaction time, and ejaculation efficiency. Sexually inexperienced young bucks were evaluated based on their sexual activity (active (AC) vs inactive (IA)) and presence of horn. It was found that AC bucks had significantly higher serum testosterone concentrations (31.5 vs 21.5 ng/mL) and weight loss (114.2 vs 51.2 g/day) than IA bucks. In addition, weight loss was significantly correlated with ejaculation efficiency in young bucks. On the other hand, horned bucks tended to have higher ejaculation efficiency with significantly longer reaction time than polled bucks. For experience (age) classes, SE bucks had higher testosterone concentration (76.0 vs 31.5 ng/mL) and weight loss (16.7 vs 8.6%) than SI active young bucks. However, the effect of experience on other sexual performance traits was found to be limited. Overall, these results indicate that testosterone concentration may affect sexual performance of young bucks in the mating season. Age-related sexual experience is not a determining factor for sexual performance in bucks. However, sexual performance data alone may not reflect reproductive outcomes without semen data.

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APA 7

al, S. K. E. (s. f.). Relationships between physiological and behavioral responses of goat bucks in mating season. https://doi.org/10.1590/S1806-92902016001000005

MLA

al, Serhat Karaca et. "Relationships between physiological and behavioral responses of goat bucks in mating season.". https://doi.org/10.1590/S1806-92902016001000005.

Chicago

al, Serhat Karaca et. s. f. "Relationships between physiological and behavioral responses of goat bucks in mating season.". https://doi.org/10.1590/S1806-92902016001000005.

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al, S. K. E. s. f, Relationships between physiological and behavioral responses of goat bucks in mating season, Sociedade Brasileira de Zootecnia, available at: https://doi.org/10.1590/S1806-92902016001000005 [Accessed 29 Jun. 2026].

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Título
Relationships between physiological and behavioral responses of goat bucks in mating season
Autor / colaboradores
Serhat Karaca et al
Editorial
Sociedade Brasileira de Zootecnia
ISSN
1806-9290
ISSN
1806-9290
Idioma
eng

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