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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas. |
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Fecha : |
14/11/2015 |
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Actualizado : |
05/11/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
DAMIÁN, J.P.; BERACOCHEA, F.; HÖTZEL, M.J.; BANCHERO, G.; UNGERFELD, R. |
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Afiliación : |
GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Reproductive and sexual behaviour development of dam or artificially reared male lambs. |
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Fecha de publicación : |
2015 |
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Fuente / Imprenta : |
Physiology and Behavior, 2015, v.147, p. 47-53. |
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ISSN : |
0031-9384 |
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DOI : |
10.1016/j.physbeh.2015.04.004 |
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Idioma : |
Inglés |
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Notas : |
Article history:Received date: 30 December 2014/Revised date: 27 March 2015/Accepted date: 2 April 2015. |
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Contenido : |
ABSTRACT.
The objective of this study was to determine if artificially reared male lambs differ from those reared by their mothers in their reproductive development and sexual behaviour during the first breeding season and in their serum testosterone to a GnRH challenge at the end of the first breeding season. Lambs were assigned to two experimental groups: 1) artificially reared lambs, separated from their dams 24-36. h after birth (Week 0) and fed sheep milk until 10. weeks of age (group AR, n = 14); and 2) lambs reared by their dams until 10. weeks of age (group DR, n = 13). Reproductive parameters and sexual behaviour were recorded from Weeks 9 to 39. The GnRH challenge was performed on Week 40. Body weight, scrotal circumference, gonado-somatic index, testosterone concentration and sperm parameters were unaffected by group, but increased with age (P < 0.0001). Lambs reared by their mothers had greater values of gonado-somatic index on Weeks 9, 16 and 19 (P < 0.05), and tended to reach puberty earlier than AR (22.9 ± 0.7 vs. 25.1 ± 1.1. weeks, respectively, P = 0.087). Lambs reared by their mothers presented more lateral approaches and mount attempts than AR (P < 0.05), and DR lambs presented more mounts on Weeks 32 and 39 than AR (P < 0.05). Blood testosterone concentrations 3.5 and 4. h after the GnRH challenge were higher in AR than in DR lambs (P < 0.05). In conclusion mother rearing promoted sexual behaviour and reproductive performance of male lambs.
© 2015. |
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Palabras claves : |
COMPORTAMIENTO SEXUAL; CONCENTRACIÓN DE TESTOSTERONA; CORDEROS; CRIANZA ARTIFICIAL DE CORDEROS; CRIANZA NATURAL DE CORDEROS; DESEMPEÑO REPRODUCTIVO EN CORDEROS; GnRH; HABILIDAD MATERNA EN LA OVEJA; HORMONA LIBERADORA DE GONADOTROPINA; ÍNDICE GONADOSOMÁTICO; LACTANCIA MATERNA EN OVINOS; MOTILIDAD DE LOS ESPERMATOZOIDES; PUBERTAD PRECOZ EN CORDEROS; VÍNCULO MADRE-CRÍA. |
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Thesagro : |
COMPORTAMIENTO REPRODUCTIVO; CORDEROS; OVINOS; REPRODUCTIVIDAD. |
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Asunto categoría : |
L52 Fisiología Animal- Crecimiento y desarrollo
L53 Fisiología Animal - Reproducción |
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Marc : |
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008 2015 bl uuuu u00u1 u #d
022 $a0031-9384
024 7 $a10.1016/j.physbeh.2015.04.004$2DOI
100 1 $aDAMIÁN, J.P.
245 $aReproductive and sexual behaviour development of dam or artificially reared male lambs.$h[electronic resource]
260 $c2015
500 $aArticle history:Received date: 30 December 2014/Revised date: 27 March 2015/Accepted date: 2 April 2015.
520 $aABSTRACT. The objective of this study was to determine if artificially reared male lambs differ from those reared by their mothers in their reproductive development and sexual behaviour during the first breeding season and in their serum testosterone to a GnRH challenge at the end of the first breeding season. Lambs were assigned to two experimental groups: 1) artificially reared lambs, separated from their dams 24-36. h after birth (Week 0) and fed sheep milk until 10. weeks of age (group AR, n = 14); and 2) lambs reared by their dams until 10. weeks of age (group DR, n = 13). Reproductive parameters and sexual behaviour were recorded from Weeks 9 to 39. The GnRH challenge was performed on Week 40. Body weight, scrotal circumference, gonado-somatic index, testosterone concentration and sperm parameters were unaffected by group, but increased with age (P < 0.0001). Lambs reared by their mothers had greater values of gonado-somatic index on Weeks 9, 16 and 19 (P < 0.05), and tended to reach puberty earlier than AR (22.9 ± 0.7 vs. 25.1 ± 1.1. weeks, respectively, P = 0.087). Lambs reared by their mothers presented more lateral approaches and mount attempts than AR (P < 0.05), and DR lambs presented more mounts on Weeks 32 and 39 than AR (P < 0.05). Blood testosterone concentrations 3.5 and 4. h after the GnRH challenge were higher in AR than in DR lambs (P < 0.05). In conclusion mother rearing promoted sexual behaviour and reproductive performance of male lambs. © 2015.
650 $aCOMPORTAMIENTO REPRODUCTIVO
650 $aCORDEROS
650 $aOVINOS
650 $aREPRODUCTIVIDAD
653 $aCOMPORTAMIENTO SEXUAL
653 $aCONCENTRACIÓN DE TESTOSTERONA
653 $aCORDEROS
653 $aCRIANZA ARTIFICIAL DE CORDEROS
653 $aCRIANZA NATURAL DE CORDEROS
653 $aDESEMPEÑO REPRODUCTIVO EN CORDEROS
653 $aGnRH
653 $aHABILIDAD MATERNA EN LA OVEJA
653 $aHORMONA LIBERADORA DE GONADOTROPINA
653 $aÍNDICE GONADOSOMÁTICO
653 $aLACTANCIA MATERNA EN OVINOS
653 $aMOTILIDAD DE LOS ESPERMATOZOIDES
653 $aPUBERTAD PRECOZ EN CORDEROS
653 $aVÍNCULO MADRE-CRÍA
700 1 $aBERACOCHEA, F.
700 1 $aHÖTZEL, M.J.
700 1 $aBANCHERO, G.
700 1 $aUNGERFELD, R.
773 $tPhysiology and Behavior, 2015$gv.147, p. 47-53.
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| 174. | | GIMÉNEZ, G. Cultivares locales y mejoramiento hortícola en procesos de trayectoria agroecológica. (Capítulo 15). Tercera sección. Tecnologías con enfoque en la productividad y la calidad. Editores: Roberto Zoppolo y Gabriel Ciappesoni. In: Georgina Paula García-Inza; José María Paruelo; Roberto Zoppolo. (eds). Aportes científicos y tecnológicos del Instituto Nacional de Investigación Agropecuaria (INIA) del Uruguay a las trayectorias agroecológicas. Ciudad Autónoma de Buenos Aires : Fundación CICCUS, 2023. p.301-327. p.301-327.| Tipo: Capítulo en Libro Técnico-Científico |
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| 175. | | PÉREZ DE VIDA, F.; CARRACELAS, G.; VARGAS, J. Cultivar promisorio de alta productividad: SLI09197. Resultados en ensayos de fajas durante 3 zafras. ln: JORNADA ANUAL ARROZ, 2016, INIA TREINTA Y TRES, TREINTA Y TRES, UY. Arroz: resultados experimentales 2015-2016. Treinta y Tres, (Uruguay): INIA, 2016. cap. 3, p. 1-3. (INIA Serie Actividades de Difusión; 765)| Biblioteca(s): INIA Tacuarembó; INIA Treinta y Tres. |
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| 178. | | ALGORTA, G. La estrategia de mejora en Eucalyptus globulus de EUFORES. ln: INIA Tacuarembó. Programa Nacional de Investigación en Producción Forestal. Seminario Forestal, 27 de junio, INIA Las Brujas, 2002. Mejoramiento Genético, Silvicultura y Sanidad de Eucalyptus Globulus en la Región Sureste. Tacuarembó (Uruguay): INIA, 2002. p. 35-43 (INIA Serie Actividades de Difusión ; 289)| Biblioteca(s): INIA Tacuarembó. |
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