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Registro completo
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Biblioteca (s) : |
INIA Las Brujas; INIA Tacuarembó. |
Fecha : |
29/09/2014 |
Actualizado : |
25/11/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
GIL, J.; GENOVESE, P.; SARTORE, I.; BIELLI, A.; MONTOSSI, F.; VIÑOLES, C. |
Afiliación : |
J. GIL, Universidad de la República (UdelaR)/ Facultad de Veterinaria; P. GENOVESE, Universidad de la República (UdelaR)/ Facultad de Veterinaria; I. SARTORE, Universidad de la República (UdelaR)/ Facultad de Veterinaria; A. BIELLI, Universidad de la República (UdelaR)/ Facultad de Veterinaria; FABIO MARCELO MONTOSSI PORCHILE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CAROLINA VIÑOLES GIL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
The leptin receptor is expressed in the Leydig cells of Merino rams, but its expression is not affected by long-term differences in the plane of nutrition |
Fecha de publicación : |
2014 |
Fuente / Imprenta : |
Animal Production Science, 2014 v. 54, p. 981-986. |
DOI : |
10.1071/AN12320 |
Idioma : |
Inglés |
Notas : |
Article history: Received 12 September 2012 / Accepted 26 September 2013 / Published online 19 December 2013. |
Contenido : |
ABSTRACT.
We studied whether the long-term effects of nutrition on ram reproductive potential are mediated by changes in the expression and distribution of leptin receptor (Ob-Rb) in the testes. Thirty-two young Merino rams were allocated to a 2 × 2 factorial design, with either natural (NP) or improved pastures (IP), with (+S) or without (?S) supplementation. After 14 weeks of treatment, a blood sample was taken to measure leptin concentrations and rams were castrated. The weights of testicles (TW) and epididymides (EW) were recorded before tissue sampling for the detection of Ob-Rb expression by immunohistochemistry. TW was positively affected by the interaction IP × S, but not EW and bodyweight (BW), which were affected either by IP or S (P < 0.05). TW and EW were greatest (g) in IP+S rams (290.6 ± 40.1 and 57.6 ± 2.3), followed by IP?S (284.6 ± 61.4 and 52.5 ± 2.3), NP+S (282.6 ± 37.9 and 55.8 ± 2.3), and NP?S rams (208.5 ± 48.7 and 44.4 ± 2.3; P < 0.01). Expression of Ob-Rb was observed in the cytoplasm of Leydig cells, without any effect of treatments on the percentage of positive Leydig cells or on staining-intensity score. The serum leptin concentrations were similar among groups. The absolute volume of the seminiferous epithelium (mL) was affected by IP and S, as well as by their interaction (IP?S: 179.7 ± 13.1, IP+S; 174.9 ± 9.0; NP+S: 178.0 ± 10.2; NP?S: 120.8 ± 9.8; P < 0.05). We conclude that, under the conditions of the present study, the long-term improvement of nutrition promoted histological changes of increased spermatogenesis of Merino rams, but was not related to changes in the expression of the Ob-Rb receptor in the Leydig cell cytoplasm. MenosABSTRACT.
We studied whether the long-term effects of nutrition on ram reproductive potential are mediated by changes in the expression and distribution of leptin receptor (Ob-Rb) in the testes. Thirty-two young Merino rams were allocated to a 2 × 2 factorial design, with either natural (NP) or improved pastures (IP), with (+S) or without (?S) supplementation. After 14 weeks of treatment, a blood sample was taken to measure leptin concentrations and rams were castrated. The weights of testicles (TW) and epididymides (EW) were recorded before tissue sampling for the detection of Ob-Rb expression by immunohistochemistry. TW was positively affected by the interaction IP × S, but not EW and bodyweight (BW), which were affected either by IP or S (P < 0.05). TW and EW were greatest (g) in IP+S rams (290.6 ± 40.1 and 57.6 ± 2.3), followed by IP?S (284.6 ± 61.4 and 52.5 ± 2.3), NP+S (282.6 ± 37.9 and 55.8 ± 2.3), and NP?S rams (208.5 ± 48.7 and 44.4 ± 2.3; P < 0.01). Expression of Ob-Rb was observed in the cytoplasm of Leydig cells, without any effect of treatments on the percentage of positive Leydig cells or on staining-intensity score. The serum leptin concentrations were similar among groups. The absolute volume of the seminiferous epithelium (mL) was affected by IP and S, as well as by their interaction (IP?S: 179.7 ± 13.1, IP+S; 174.9 ± 9.0; NP+S: 178.0 ± 10.2; NP?S: 120.8 ± 9.8; P < 0.05). We conclude that, under the conditions of the present study, the long-term improvement... Presentar Todo |
Thesagro : |
MERINO; NUTRICIÓN ANIMAL; OVINOS. |
Asunto categoría : |
-- L51 Fisiología Animal - Nutrición |
Marc : |
LEADER 02510naa a2200241 a 4500 001 1052570 005 2019-11-25 008 2014 bl uuuu u00u1 u #d 024 7 $a10.1071/AN12320$2DOI 100 1 $aGIL, J. 245 $aThe leptin receptor is expressed in the Leydig cells of Merino rams, but its expression is not affected by long-term differences in the plane of nutrition 260 $c2014 500 $aArticle history: Received 12 September 2012 / Accepted 26 September 2013 / Published online 19 December 2013. 520 $aABSTRACT. We studied whether the long-term effects of nutrition on ram reproductive potential are mediated by changes in the expression and distribution of leptin receptor (Ob-Rb) in the testes. Thirty-two young Merino rams were allocated to a 2 × 2 factorial design, with either natural (NP) or improved pastures (IP), with (+S) or without (?S) supplementation. After 14 weeks of treatment, a blood sample was taken to measure leptin concentrations and rams were castrated. The weights of testicles (TW) and epididymides (EW) were recorded before tissue sampling for the detection of Ob-Rb expression by immunohistochemistry. TW was positively affected by the interaction IP × S, but not EW and bodyweight (BW), which were affected either by IP or S (P < 0.05). TW and EW were greatest (g) in IP+S rams (290.6 ± 40.1 and 57.6 ± 2.3), followed by IP?S (284.6 ± 61.4 and 52.5 ± 2.3), NP+S (282.6 ± 37.9 and 55.8 ± 2.3), and NP?S rams (208.5 ± 48.7 and 44.4 ± 2.3; P < 0.01). Expression of Ob-Rb was observed in the cytoplasm of Leydig cells, without any effect of treatments on the percentage of positive Leydig cells or on staining-intensity score. The serum leptin concentrations were similar among groups. The absolute volume of the seminiferous epithelium (mL) was affected by IP and S, as well as by their interaction (IP?S: 179.7 ± 13.1, IP+S; 174.9 ± 9.0; NP+S: 178.0 ± 10.2; NP?S: 120.8 ± 9.8; P < 0.05). We conclude that, under the conditions of the present study, the long-term improvement of nutrition promoted histological changes of increased spermatogenesis of Merino rams, but was not related to changes in the expression of the Ob-Rb receptor in the Leydig cell cytoplasm. 650 $aMERINO 650 $aNUTRICIÓN ANIMAL 650 $aOVINOS 700 1 $aGENOVESE, P. 700 1 $aSARTORE, I. 700 1 $aBIELLI, A. 700 1 $aMONTOSSI, F. 700 1 $aVIÑOLES, C. 773 $tAnimal Production Science, 2014$gv. 54, p. 981-986.
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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
18/04/2016 |
Actualizado : |
18/04/2016 |
Tipo de producción científica : |
Poster |
Autor : |
QUINTANS, G.; BARRETO, S.; NEGRÍN, D.; AYALA, W. |
Afiliación : |
GRACIELA QUINTANS ILARIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; WALTER FELIZARDO AYALA SILVERA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Efecto de la tasa de ganancia invernal en el inicio de la pubertad de terneras de biotipos carniceros en pastoreo. [Poster]. |
Fecha de publicación : |
2007 |
Fuente / Imprenta : |
In: Congreso Latinoamericano de Producción Animal, Cuzco, Perú, 2007. |
Idioma : |
Español |
Palabras claves : |
TERNERAS. |
Thesagro : |
ALIMENTACIÓN DE LOS ANIMALES; BOVINOS DE CARNE; MEJORAMIENTO DE CAMPOS; REPRODUCCION ANIMAL. |
Asunto categoría : |
-- |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/5683/1/Poster-quintans-2007.pdf
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Marc : |
LEADER 00663nam a2200193 a 4500 001 1054686 005 2016-04-18 008 2007 bl uuuu u00u1 u #d 100 1 $aQUINTANS, G. 245 $aEfecto de la tasa de ganancia invernal en el inicio de la pubertad de terneras de biotipos carniceros en pastoreo. [Poster].$h[electronic resource] 260 $aIn: Congreso Latinoamericano de Producción Animal, Cuzco, Perú$c2007 650 $aALIMENTACIÓN DE LOS ANIMALES 650 $aBOVINOS DE CARNE 650 $aMEJORAMIENTO DE CAMPOS 650 $aREPRODUCCION ANIMAL 653 $aTERNERAS 700 1 $aBARRETO, S. 700 1 $aNEGRÍN, D. 700 1 $aAYALA, W.
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