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dc.contributor.advisorFlores Cabrera, José Alfredo
dc.contributor.authorCedillo Ramírez, Laura Maribel
dc.contributor.otherTerrazas García, Angélica María
dc.contributor.otherDelgadillo Sánchez, José Alberto
dc.contributor.otherHernández Hernández, Horacio
dc.date.accessioned2015-10-20T19:36:31Z
dc.date.available2015-10-20T19:36:31Z
dc.date.issued2014-06-01es_MX
dc.identifier.urihttp://repositorio.uaaan.mx/xmlui/handle/123456789/7313
dc.descriptionDeterminar si los machos cabríos foto-estimulados de rango social bajo disminuyen su capacidad para inducir la actividad ovulatoria en las cabras anéstricas expuestas al efecto macho
dc.description.abstract"El objetivo de este estudio fue determinar si los machos cabríos foto-estimulados de rango social bajo disminuyen su capacidad para inducir la actividad ovulatoria en las cabras anéstricas expuestas al efecto macho. Se utilizaron 12 machos cabríos de 2.5 años de edad en promedio los cuales fueron mantenidos en un mismo corral y sometidos a un tratamiento de 2.5 meses de días largos artificiales (16h luz/ día). Dicho tratamiento abarco del 1 de noviembre al 15 de enero y se hizo con el fin de estimular su actividad sexual durante el iv periodo de reposo sexual (marzo-abril). Durante el mes de marzo, se cuantificó el rango social de cada macho. Para ello, los machos se observaron por 2 horas diarias al momento de proporcionar la alimentación (09:00-11:00), durante siete días consecutivos. En esa observación se registraron todas las interacciones agonísticas (golpes, amenazas, persecuciones, huidas y evasiones), que realizaron los animales. A partir de estas interacciones sociales, así como sus consecuencias (ganar o perder la interacción), se calculó un índice de éxito (IE) a cada macho cabrío. El IE tiene un rango de 0 a 1 y existen tres categorías: la que va de 0 a 0.33 en donde los machos fueron clasificados como animales con un rango social bajo (n=3); de 0.34 a 0.66, animales con rango social medio (n=3) y de 0.67 a 1, animales con rango social alto (n=3). Con el fin de valorar la capacidad de los machos para estimular la actividad ovárica de las cabras, se utilizaron 76 hembras adultas multíparas divididas en tres grupos. Un grupo de cabras (n= 27) fueron expuestas a los 3 machos de rango social bajo; otro grupo de cabras (n = 26) fueron expuestas a los 3 machos con rango social medio y el tercer grupo de hembras (n= 23) fueron expuestas a los 3 machos de rango social no disminuyen su capacidad para inducir la actividad ovulatoria de las cabras anéstricas mediante el efecto macho."es_MX
dc.formatPDF
dc.languageEspañoles_MX
dc.publisherUniversidad Autónoma Agraria Antonio Narro
dc.rightsAcceso Abierto
dc.rights.uriCC BY-NC-ND - Atribución-NoComercial-SinDerivadas
dc.subjectCIENCIAS AGROPECUARIAS Y BIOTECNOLOGÍA
dc.subject.otherCaprinos
dc.subject.otherActividad reproductiva
dc.subject.otherAnestro
dc.subject.otherTasa ovulatoria,
dc.subject.otherComportamiento sexual
dc.titleEn los machos cabríos foto-estimulados de bajo rango social no disminuye su habilidad para estimular la actividad ovulatoria de las cabras mediante el efecto machoes_MX
dc.typeTesis de maestríaes_MX
dc.description.abstractEn"The present study was carried out to determine if the foto-stimulated male goats of low social rank do not diminish their ability to stimulate the ovulatory activity of the anestrus female goats by male effect. Twelve Creole bucks with 2.5 years old were kept in open pen where they perceived artificial long days from November 1 to January 15. After this treatment an intense sexual activity is induces in the males during a season of sexual rest (March-April). In March, the social rank of each male was determined by calculating the index of success. Behavioral observations were recorded during 2 hours by 7 consecutive days. vii These observations were carried out during the feeding period (9:00 am) and the following interaction behaviors were recorded: butts, persecution, threats, chases and avoidance. With these social interactions and their consequences (win or lose during the interaction), their social rank was calculated for each male. When the value of index success was ranking from 0 to 0.33 a male was considered with low social rank. An index of success from 0.34 to 0.66 the animals were considered with middle social rank, and from 0.67 to 1.0, animals were with high social rank. A group of females (n=27) was exposed to 3 males of low social rank; another group (n=26) was exposed to 3 males from medium social rank and the third group (n=23) was exposed to 3 males from high social rank. The three groups of females were in contact 24h/day with males during 18 days. The sexual behavior of males was determined during 1 hour en the first day of contact with the females. The behaviors registered were: nudging, sniffing, mount intents, serf-urinations and flehmen. Indeed the ovulations and ovulation rates (numbers of corpus luteum) were determined throughout two tranrectal ultrasonography on day 6 and 18 after the male introduction. The number of nudging and sniffing were higher (P<0.05) in males of medium and high social rank males than low social rank males. There were no differences between social ranks in the rest of the recorded behaviors (P>0.05). The total percentage of does with ovulations during the first 6 days of exposure to males did not differ (P<0.05) between groups (63, 73.1 and 78.3% for goats exposed to low, medium and high social rank males, respectively). Ovulation rates in the first ovulation were similar (P>0.05) between females exposed to males of low social rank (1.6 ± 0.2), medium (1.3 ± 0.2) and high social rank males (1.6 ± 0.2). In the second ovulation (day 6-18), the percentage of females that ovulated viii was similar among the three groups (88.9%, 96.2% and 100% for goats stimulated with low, medium and high social rank bucks, respectively; P>0.05). Ovulation rates in the second ovulation were different (P<0.05) among females exposed to males of low (1.4 ± 0.1) and high social rank bucks (1.8 ± 0.2). These results demonstrate that social status does not affect the ability of sexually active males to induce ovulatory activity of anestrous female goats by the male effect."es_MX
dc.type.versionVersión publicada
dc.audienceEstudiantes
dc.audienceInvestigadores
dc.publisher.placeTorreón, Coahuila, Méxicoes_MX


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