La Presencia De Hembras Estrogenizadas Al Momento Del Efecto Macho Induce La Actividad Estral De Cabras en El Semidesierto Mexicano

Santiago-Miramontes, María de los Ángeles De; Marcelino-León, Sandra; Luna-Orozco, Juan Ramón; Rivas-Muñoz, Raymundo; Rodríguez-Martínez, Rafael; Mellado, M.; Véliz-Deras, Francisco Gerardo

doi:10.5154/r.rchscfa.2010.09.081

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…El impulso sexual o libido de los animales y algunas formas de incapacidad sexual dependen particularmente de factores genéticos y de alteraciones estructurales que afectan la capacidad de cópula [2,10].…”

Section: Libido Y Capacidad De Serviciounclassified

Comportamiento reproductivo del carnero en un rebaño de ovejas "Obispo" de la montaña del estado de Guerrero, México

Martínez-Rojero

Ullóa-Arvízu

2023

RC FCV-LUZ

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Este es el primer reporte del comportamiento reproductivo de los carneros en un rebaño de ovinos “Obispo”. El estudio se llevó a cabo ex situ (18°15'52" LN) en condiciones de mayor temperatura de lo que se presenta en la montaña de Guerrero, México. En el análisis de Componentes principales (CP), el primer componente (CP1) incluyó el peso corporal (PC), circunferencia escrotal (CE) y volumen de eyaculado (VE) y, en el CP2, se agrupó la concentración espermática (CONC) y motilidad progresiva (MP). La CE mostró un incremento a través del año llegando al final del estudio a 32,0 ± 0,3 centímetros a una edad aproximada de 30 meses y mostró correlaciones mayores a 0,5 con VE, CONC y MP. Los valores más bajos registrados en las características fueron en la primavera, con 0,86 ± 0,3 milílitros (mL) para el VE, 4.120,2 ± 162 millones de espermatozoides·mL-1 × 106 para CONC y de 86 ± 1,6 % para MP; mientras que los valores más altos se presentaron en otoño con 1,12 ± 0,02 mL para el VE, 4.519,2 ± 187,0 millones de espermatozoides·mL-1 × 106 para CONC y 92,0 ± 1,1 % para MP. Los carneros conservan una alto libido que les permite mantener un número elevado de servicios (más de tres en un periodo de cinco minutos), con reducidos tiempos de reacción 49 segundos y de recuperación entre cópulas (1,84 minutos).

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Section: Libido Y Capacidad De Serviciounclassified

Comportamiento reproductivo del carnero en un rebaño de ovejas "Obispo" de la montaña del estado de Guerrero, México

Martínez-Rojero

Ullóa-Arvízu

2023

RC FCV-LUZ

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“…Reproduction in Small Ruminants (Goats) DOI: http://dx.doi.org/10.5772/intechopen.93481 (vocalizations) of the goat were not sufficient to stimulate the presence of estrus and ovulation, therefore, the frequency of pulses of the LH was not increased [30]. Likewise, there are studies where the introduction of estrogenized females when introducing the buck can stimulate the estrous activity of anovulatory goats [31]. Delgadillo et al [32] reviewing the male effect on goats, mention that in previous years it was mentioned that the male should be in permanent contact with the goats, their studies elucidated that it is not necessary and with a minimum contact of 4-16 hours, percentages of estrus can be reached in goats subjected to the male effect, the same as in groups that are in permanent contact with the males.…”

Section: Sequence Of Sexual Behavior In Bucksmentioning

confidence: 99%

Reproduction in Small Ruminants (Goats)

Sánchez-Dávila¹,

Muñoz²

2021

Animal Reproduction in Veterinary Medicine

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The exploitation of small ruminants (goat and sheep) has always been linked to the development of human civilizations, where they have mainly fed on their derived products such as milk and meat. Currently, the sheep population is around 1 billion head concentrated above 50% in three countries, China, Australia, and New Zealand, contrary to goats with around 720 million heads, distributed mainly in Asia, Africa, and South America. Both species have similar characteristics in some anatomical aspects (a pair of nipples), gestation period (150 days), and presence of seasonal anestrus, differing in terms of magnitude and depth and presence of the male effect. However, they are completely different in feeding habits, nutrient needs, and grazing systems, with differences in terms of the female’s reproductive tract, among other characteristics. Currently, the study of reproduction has intensified over the years in the goats and its counterpart that is the buck. Therefore, in the following topics, the importance of global reproduction of the goat will be discussed, considering that progress has been made today in the application of third generation reproductive techniques and that today they are already consolidated and developed in the bovine species.

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Estrus induction in anestrous mixed-breed goats using the “female-to-female effect”

Rodríguez-Martínez

Guillen-Muñoz

Robles-Trillo

et al. 2012

Trop Anim Health Prod

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A trial was conducted during the anestrous period in female goats to determine: (a) whether estrus can be induced in anestrous goats by administration of equine chorionic gonadotropic hormone (eCG) and PGF2α under pen conditions and (b) whether these sexually active female goats can elicit sexual arousal in sexually inactive bucks. One hundred and fifteen pluriparous, nonlactating mixed-breed female goats were randomly assigned to one of four treatment groups: (1) administration of a single dose of 240 IU of eCG, 50 μg PGF2α i.m., and 25 mg progesterone (P4) (eCG; n=30); (2) administration of P4 and exposure to female goats treated with eCG-PGF2α (P4; n=39); (3) administration of 0.5 ml saline and P4 (Sal; n=23); and (4) P4 plus exposure to female goats treated with saline (Con; n=23). After hormone administration, all goats were put together with adult sexually inactive bucks for 15 days. The percentage of goats in estrus during these 15 days was similar in eCG-treated animals and untreated animals exposed to the eCG animals (97 and 95%). Pregnancy rate was also similar (63 vs. 64%) between these two groups. eCG-treated goats exhibited estrus earlier (P<0.05) than the treated goats in contact with the eCG goats. Furthermore, eCG-treated goats had larger litters (1.9 ± 0.2 vs. 1.6 ± 0.1, P<0.05) than the untreated goats in contact with the eCG goats. These results show that fertile estrus can be induced in anestrous female goats by exposing them to female goats induced to estrus with eCG. This female-female interaction triggers the stimulation cycle leading to the sexual arousal of bucks.

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La Presencia De Hembras Estrogenizadas Al Momento Del Efecto Macho Induce La Actividad Estral De Cabras en El Semidesierto Mexicano

Cited by 3 publications

References 22 publications

Comportamiento reproductivo del carnero en un rebaño de ovejas "Obispo" de la montaña del estado de Guerrero, México

Comportamiento reproductivo del carnero en un rebaño de ovejas "Obispo" de la montaña del estado de Guerrero, México

Reproduction in Small Ruminants (Goats)

Estrus induction in anestrous mixed-breed goats using the “female-to-female effect”

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