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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 Las Brujas. |
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Fecha : |
21/10/2014 |
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Actualizado : |
25/09/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
MULVANEY, F.J.; MORRIS, S.T.; KENYON, P.R.; MOREL, P.C.H.; WEST, D.M.; VIÑOLES, C.; GLOVER, K.M.M. |
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Afiliación : |
CAROLINA VIÑOLES GIL, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Comparison between the reproductive performance of ewe hoggets and mature ewes following a progesterone-based oestrus synchronization protocol. |
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Fecha de publicación : |
2013 |
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Fuente / Imprenta : |
New Zealand Journal of Agricultural Research, 2013, v.56, no.4, p. 288-296. |
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Serie : |
0028-8233 |
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DOI : |
10.1080/00288233.2013.842176 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 27 May 2013 // Accepted 5 September 2013. |
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Contenido : |
ABSTRACT.
Two experiments were conducted to compare the reproductive performance of ewe hoggets and mature ewes. All ewes were synchronized by an intravaginal progesterone-releasing device and bred together over a 5-day period. In Experiment 1, of those joined with the ram, more mature ewes ovulated (99% vs 68%; P < 0.05) with a higher ovulation rate (1.82 vs 1.14; P < 0.05) than ewe hoggets. Mature ewes had a higher pregnancy rate (98% vs 47%; P < 0.05) and lower early pregnancy loss (13% vs 41%; P < 0.05) than ewe hoggets. In Experiment 2, the ovulation rate (1.84 vs 1.44; P < 0.05) and pregnancy rate (86% vs 7%; P < 0.05) was higher in mature ewes compared with ewe hoggets. Combined, these studies help to quantify the difference in reproductive performance during breeding and pregnancy between ewe hoggets and mature ewes, and help to direct further research.
© 2013 The Royal Society of New Zealand. |
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Thesagro : |
CORDEROS; REPRODUCCION ANIMAL. |
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Asunto categoría : |
L53 Fisiología Animal - Reproducción |
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Marc : |
LEADER 01779naa a2200253 a 4500
001 1051218
005 2019-09-25
008 2013 bl uuuu u00u1 u #d
024 7 $a10.1080/00288233.2013.842176$2DOI
100 1 $aMULVANEY, F.J.
245 $aComparison between the reproductive performance of ewe hoggets and mature ewes following a progesterone-based oestrus synchronization protocol.$h[electronic resource]
260 $c2013
490 $a0028-8233
500 $aArticle history: Received 27 May 2013 // Accepted 5 September 2013.
520 $aABSTRACT. Two experiments were conducted to compare the reproductive performance of ewe hoggets and mature ewes. All ewes were synchronized by an intravaginal progesterone-releasing device and bred together over a 5-day period. In Experiment 1, of those joined with the ram, more mature ewes ovulated (99% vs 68%; P < 0.05) with a higher ovulation rate (1.82 vs 1.14; P < 0.05) than ewe hoggets. Mature ewes had a higher pregnancy rate (98% vs 47%; P < 0.05) and lower early pregnancy loss (13% vs 41%; P < 0.05) than ewe hoggets. In Experiment 2, the ovulation rate (1.84 vs 1.44; P < 0.05) and pregnancy rate (86% vs 7%; P < 0.05) was higher in mature ewes compared with ewe hoggets. Combined, these studies help to quantify the difference in reproductive performance during breeding and pregnancy between ewe hoggets and mature ewes, and help to direct further research. © 2013 The Royal Society of New Zealand.
650 $aCORDEROS
650 $aREPRODUCCION ANIMAL
700 1 $aMORRIS, S.T.
700 1 $aKENYON, P.R.
700 1 $aMOREL, P.C.H.
700 1 $aWEST, D.M.
700 1 $aVIÑOLES, C.
700 1 $aGLOVER, K.M.M.
773 $tNew Zealand Journal of Agricultural Research, 2013$gv.56, no.4, p. 288-296.
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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 : |
01/11/2021 |
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Actualizado : |
01/11/2021 |
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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 : |
MENCHACA, A.; BOSOLASCO, D.; NÚÑEZ-OLIVERA R.; CUADRO, F.; SPECIALE C.J.M.; PEREZ-WALLACE S. |
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Afiliación : |
JOSE ALEJO MENCHACA BARBEITO, Fundacion IRAUy, Instituto de Reproducción Animal Uruguay, Montevideo, Uruguay; INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; D. BOSOLASCO, Fundacion IRAUy, Instituto de Reproducción Animal Uruguay, Montevideo, Uruguay; R. NÚÑEZ-OLIVERA, Fundacion IRAUy, Instituto de Reproducción Animal Uruguay, Montevideo, Uruguay; F. CUADRO, Fundacion IRAUy, Instituto de Reproducción Animal Uruguay, Montevideo, Uruguay; C.J.M. SPECIALE, Ministerio de Agricultura, Ganadería y Pesca de la Provincia de Río Negro, Viedma, Río Negro, Argentina; S. PEREZ-WALLACE, Zoetis, Buenos Aires, Argentina. |
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Título : |
Estradiol cypionate treatment in suckling/weaning and estrous cycling/anestrous beef cows subjected to fixed-time artificial insemination. |
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Fecha de publicación : |
2021 |
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Fuente / Imprenta : |
Animal Reproduction Science, October 2021, Volume 233, Article number 106839. Doi: https://doi.org/10.1016/j.anireprosci.2021.106839 |
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ISSN : |
0378-4320 |
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DOI : |
10.1016/j.anireprosci.2021.106839 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 5 May 2021; Received in revised form 26 August 2021; Accepted 27 August 2021; Available online 3 September 2021. |
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Contenido : |
ABSTRACT - This study was conducted to evaluate the interaction between dose of estradiol cypionate (ECP) and ovarian status in beef cows on which different weaning/suckling regimens were imposed before fixed-time artificial insemination (FTAI). A total of 8070 estrous cycling and anestrous cows were subjected to three experiments, when calves were weaned early (Experiment 1), anti-suckling nose plates were applied for 9 or 10 days (Experiment 2), or there was continued suckling (Experiment 3). The cows were administered an estradiol/progesterone?based treatment regimen for FTAI and were treated with 0.5 or 1.0 mg of ECP im at the time of progesterone intravaginal device removal. Artificial insemination was performed from 46 to 56 h after the time of ECP treatment. Pregnancy per artificial insemination (P/AI) was affected by dose of ECP differentially in early-weaned and suckled cows. Whereas P/AI percentage was greater in early-weaned cows treated with 0.5 than 1.0 mg ECP (P < 0.05), P/AI percentage was greater for suckled cows treated with 1.0 than 0.5 mg ECP (P < 0.05). Although there were greater P/AI percentages in estrous cycling than anestrous cows (P < 0.05) when there was nose plate weaning and continuation of suckling, there was no difference between estrous cycling and anestrous cows (P = NS) when there was early weaning. Overall results indicate ECP administration affects fertility in a dose-dependent manner, suggesting an interaction between suckling and estrous cycling effects. As more critical the condition was (i.e., suckling anestrous cows), larger dose of estradiol was required. © 2021 MenosABSTRACT - This study was conducted to evaluate the interaction between dose of estradiol cypionate (ECP) and ovarian status in beef cows on which different weaning/suckling regimens were imposed before fixed-time artificial insemination (FTAI). A total of 8070 estrous cycling and anestrous cows were subjected to three experiments, when calves were weaned early (Experiment 1), anti-suckling nose plates were applied for 9 or 10 days (Experiment 2), or there was continued suckling (Experiment 3). The cows were administered an estradiol/progesterone?based treatment regimen for FTAI and were treated with 0.5 or 1.0 mg of ECP im at the time of progesterone intravaginal device removal. Artificial insemination was performed from 46 to 56 h after the time of ECP treatment. Pregnancy per artificial insemination (P/AI) was affected by dose of ECP differentially in early-weaned and suckled cows. Whereas P/AI percentage was greater in early-weaned cows treated with 0.5 than 1.0 mg ECP (P < 0.05), P/AI percentage was greater for suckled cows treated with 1.0 than 0.5 mg ECP (P < 0.05). Although there were greater P/AI percentages in estrous cycling than anestrous cows (P < 0.05) when there was nose plate weaning and continuation of suckling, there was no difference between estrous cycling and anestrous cows (P = NS) when there was early weaning. Overall results indicate ECP administration affects fertility in a dose-dependent manner, suggesting an interaction between suckling and estrous... Presentar Todo |
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Palabras claves : |
Estrogen; Estrus; Follicle; Ovulation; PLATAFORMA DE SALUD ANIMAL; Synchronization. |
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Asunto categoría : |
L50 Fisiología y bioquímica animal |
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Marc : |
LEADER 02714naa a2200289 a 4500
001 1062508
005 2021-11-01
008 2021 bl uuuu u00u1 u #d
022 $a0378-4320
024 7 $a10.1016/j.anireprosci.2021.106839$2DOI
100 1 $aMENCHACA, A.
245 $aEstradiol cypionate treatment in suckling/weaning and estrous cycling/anestrous beef cows subjected to fixed-time artificial insemination.$h[electronic resource]
260 $c2021
500 $aArticle history: Received 5 May 2021; Received in revised form 26 August 2021; Accepted 27 August 2021; Available online 3 September 2021.
520 $aABSTRACT - This study was conducted to evaluate the interaction between dose of estradiol cypionate (ECP) and ovarian status in beef cows on which different weaning/suckling regimens were imposed before fixed-time artificial insemination (FTAI). A total of 8070 estrous cycling and anestrous cows were subjected to three experiments, when calves were weaned early (Experiment 1), anti-suckling nose plates were applied for 9 or 10 days (Experiment 2), or there was continued suckling (Experiment 3). The cows were administered an estradiol/progesterone?based treatment regimen for FTAI and were treated with 0.5 or 1.0 mg of ECP im at the time of progesterone intravaginal device removal. Artificial insemination was performed from 46 to 56 h after the time of ECP treatment. Pregnancy per artificial insemination (P/AI) was affected by dose of ECP differentially in early-weaned and suckled cows. Whereas P/AI percentage was greater in early-weaned cows treated with 0.5 than 1.0 mg ECP (P < 0.05), P/AI percentage was greater for suckled cows treated with 1.0 than 0.5 mg ECP (P < 0.05). Although there were greater P/AI percentages in estrous cycling than anestrous cows (P < 0.05) when there was nose plate weaning and continuation of suckling, there was no difference between estrous cycling and anestrous cows (P = NS) when there was early weaning. Overall results indicate ECP administration affects fertility in a dose-dependent manner, suggesting an interaction between suckling and estrous cycling effects. As more critical the condition was (i.e., suckling anestrous cows), larger dose of estradiol was required. © 2021
653 $aEstrogen
653 $aEstrus
653 $aFollicle
653 $aOvulation
653 $aPLATAFORMA DE SALUD ANIMAL
653 $aSynchronization
700 1 $aBOSOLASCO, D.
700 1 $aNÚÑEZ-OLIVERA R.
700 1 $aCUADRO, F.
700 1 $aSPECIALE C.J.M.
700 1 $aPEREZ-WALLACE S.
773 $tAnimal Reproduction Science, October 2021, Volume 233, Article number 106839. Doi: https://doi.org/10.1016/j.anireprosci.2021.106839
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