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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 : |
LEADER 02907naa a2200421 a 4500
001 1053881
005 2019-11-05
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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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
20/11/2015 |
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Actualizado : |
24/06/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
MACEDO, J.S.; ROCHA, B.P.; COLODEL, E.M.; FREITAS, S.H.; DORIA, R.G.S.; RIET-CORREA, F.; EVENCIO-NETO, J.; MENDONCA, F.S. |
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Afiliación : |
JOSENALDO S. MACEDO; BRENA P. ROCHA; EDSON M. COLODEL; SILVIO H. FREITAS; RENATA G.S. DORIA; FRANKLIN RIET-CORREA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOAQUIM EVENCIO-NETO; FABIO S. MENDONCA. |
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Título : |
Congenital malformations caused by Stryphnodendron fissuratum (Leg. Mimosoideae) in guinea pigs (Cavia porcellus). |
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Fecha de publicación : |
2015 |
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Fuente / Imprenta : |
Toxicon, 2015, v. 106, p. 68-71. |
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ISSN : |
0041-0101 |
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DOI : |
10.1016/j.toxicon.2015.09.003 |
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Idioma : |
Inglés |
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Contenido : |
ABSTRACT.
The aim of this study was to evaluate the toxicity of Stryphnodendron fissuratum pods in guinea pigs (Cavia porcellus) and test the hypothesis that this plant has teratogenic effects. Thus, sixteen guinea pigs were randomly divided into four groups of four animals each. Groups 10, 20 and 40 consisted of guinea pigs that received commercial food that contained crushed pods of S. fissuratum at concentrations of 10, 20 and 40 g/kg, respectively, during the period of organogenesis. Control group consisted of guinea pigs under the same management conditions that did not receive crushed pods of S. fissuratum in their food. In all experimental groups, the main clinical signs of poisoning consisted of anorexia, prostration, absence of vocalizations, alopecia, diarrhea, and abortions within the adult guinea pigs. Those that did not abort gave birth to weak, malnourished pups, some of which had fetal malformations. The main teratogenic changes consisted of eventration, arthrogryposis, amelia of the forelimbs, anophthalmia, microphthalmia, anotia and agnathia. The reductions in the number of offspring and the malformations observed in the experimental groups suggest that S. fissuratum affects fetal development and is teratogenic.
@ 2015 Elsevier Ltd. All rights reserved. |
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Palabras claves : |
ABORTIONS; POISONOUS PLANTS; STRYPHNODENDRON FISSURATUM; TERATOGENESIS. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02107naa a2200277 a 4500
001 1053971
005 2021-06-24
008 2015 bl uuuu u00u1 u #d
022 $a0041-0101
024 7 $a10.1016/j.toxicon.2015.09.003$2DOI
100 1 $aMACEDO, J.S.
245 $aCongenital malformations caused by Stryphnodendron fissuratum (Leg. Mimosoideae) in guinea pigs (Cavia porcellus).$h[electronic resource]
260 $c2015
520 $aABSTRACT. The aim of this study was to evaluate the toxicity of Stryphnodendron fissuratum pods in guinea pigs (Cavia porcellus) and test the hypothesis that this plant has teratogenic effects. Thus, sixteen guinea pigs were randomly divided into four groups of four animals each. Groups 10, 20 and 40 consisted of guinea pigs that received commercial food that contained crushed pods of S. fissuratum at concentrations of 10, 20 and 40 g/kg, respectively, during the period of organogenesis. Control group consisted of guinea pigs under the same management conditions that did not receive crushed pods of S. fissuratum in their food. In all experimental groups, the main clinical signs of poisoning consisted of anorexia, prostration, absence of vocalizations, alopecia, diarrhea, and abortions within the adult guinea pigs. Those that did not abort gave birth to weak, malnourished pups, some of which had fetal malformations. The main teratogenic changes consisted of eventration, arthrogryposis, amelia of the forelimbs, anophthalmia, microphthalmia, anotia and agnathia. The reductions in the number of offspring and the malformations observed in the experimental groups suggest that S. fissuratum affects fetal development and is teratogenic. @ 2015 Elsevier Ltd. All rights reserved.
653 $aABORTIONS
653 $aPOISONOUS PLANTS
653 $aSTRYPHNODENDRON FISSURATUM
653 $aTERATOGENESIS
700 1 $aROCHA, B.P.
700 1 $aCOLODEL, E.M.
700 1 $aFREITAS, S.H.
700 1 $aDORIA, R.G.S.
700 1 $aRIET-CORREA, F.
700 1 $aEVENCIO-NETO, J.
700 1 $aMENDONCA, F.S.
773 $tToxicon, 2015$gv. 106, p. 68-71.
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