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Biblioteca (s) : |
INIA Las Brujas. |
Fecha : |
02/01/2017 |
Actualizado : |
02/01/2017 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
FIERRO, S.; VIÑOLES, C.; OLIVERA-MUZANTE, J. |
Afiliación : |
S. FIERRO, SUL (Secretariado Uruguayo de la Lana).; CAROLINA VIÑOLES GIL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; J. OLIVERA-MUZANTE, Universidad de la República (UdelaR)/ Centro Universitario Regional Noroeste, Salto (CENUR). |
Título : |
Long term prostaglandin based-protocols improve the reproductive performance after timed artificial insemination in sheep. |
Fecha de publicación : |
2017 |
Fuente / Imprenta : |
Theriogenology, 2017, v. 90, p. 109-113. |
DOI : |
10.1016/j.theriogenology.2016.11.031 |
Idioma : |
Inglés |
Notas : |
Article history: Received 25 April 2016; Received in revised form; 28 September 2016; Accepted 30 November 2016; Available online 2 December 2016 |
Contenido : |
ABSTRACT.
The aim of the experiment was to evaluate the reproductive performance of ewes synchronized with two doses of prostaglandin F2a (PG) at different intervals and inseminated at a fixed time. During the breeding season (April to June), 370 multiparous Corriedale ewes were assigned to five groups according to body condition score and body weight, and synchronized with two doses of PG administered 7, 10, 12, 14 or 16 days apart (groups PG7, PG10, PG12, PG14 or PG16; n ¼ 73, 76, 74, 72, 75; respectively). Cervical timed artificial insemination (Day 0) was performed at 48 ± 1.0 h (group PG7) or 56 ± 1.0 h (groups PG10, PG12, PG14 and PG16) after the second PG injection, with diluted fresh semen pooled from six adult rams. The percentage of ovulating ewes after the second PG injection and the ovulation rate (number of corpus luteum/ovulating ewes) were assessed on Day 10 by trans-rectal ultrasonography. The rate of non return to service (ewes not returning to service/inseminated ewes 100; NRR-21) was evaluated using painted vasectomized rams. Pregnancy rate (pregnant ewes/inseminated ewes 100) and prolificacy (foetuses/pregnant ewes) were determined on Day 60 by trans-abdominal ultrasonography. Higher NRR-21 and pregnancy rates was observed in groups PG12 (46.0%, 46.0%), PG14 (59.7%, 56.9%) and PG16 (58.7%, 56.0%) compared to PG7 (30.1%, 28.8%) and PG10 (30.3%, 30.3%; respectively P < 0.05). No significant differences were observed in the percentage of ovulating ewes, ovulation rate and prolificacy among groups (P > 0.05). Under the condition of this trial, 12, 14 or 16 days interval between PG injections enhances the pregnancy rate of ewes at cervical timed artificial insemination with fresh semen.
© 2016 Elsevier Inc. All rights reserved. MenosABSTRACT.
The aim of the experiment was to evaluate the reproductive performance of ewes synchronized with two doses of prostaglandin F2a (PG) at different intervals and inseminated at a fixed time. During the breeding season (April to June), 370 multiparous Corriedale ewes were assigned to five groups according to body condition score and body weight, and synchronized with two doses of PG administered 7, 10, 12, 14 or 16 days apart (groups PG7, PG10, PG12, PG14 or PG16; n ¼ 73, 76, 74, 72, 75; respectively). Cervical timed artificial insemination (Day 0) was performed at 48 ± 1.0 h (group PG7) or 56 ± 1.0 h (groups PG10, PG12, PG14 and PG16) after the second PG injection, with diluted fresh semen pooled from six adult rams. The percentage of ovulating ewes after the second PG injection and the ovulation rate (number of corpus luteum/ovulating ewes) were assessed on Day 10 by trans-rectal ultrasonography. The rate of non return to service (ewes not returning to service/inseminated ewes 100; NRR-21) was evaluated using painted vasectomized rams. Pregnancy rate (pregnant ewes/inseminated ewes 100) and prolificacy (foetuses/pregnant ewes) were determined on Day 60 by trans-abdominal ultrasonography. Higher NRR-21 and pregnancy rates was observed in groups PG12 (46.0%, 46.0%), PG14 (59.7%, 56.9%) and PG16 (58.7%, 56.0%) compared to PG7 (30.1%, 28.8%) and PG10 (30.3%, 30.3%; respectively P < 0.05). No significant differences were observed in the percentage of ovulating ewes, o... Presentar Todo |
Palabras claves : |
EWE; FERTILITY; OESTRUS SYNCHRONIZATION; OVULATION RATE; PROTAGLANDIN; TIMED ARTIFICAL INSEMINATION. |
Thesagro : |
OVEJA; OVINOS. |
Asunto categoría : |
-- |
Marc : |
LEADER 02707naa a2200265 a 4500 001 1056404 005 2017-01-02 008 2017 bl uuuu u00u1 u #d 024 7 $a10.1016/j.theriogenology.2016.11.031$2DOI 100 1 $aFIERRO, S. 245 $aLong term prostaglandin based-protocols improve the reproductive performance after timed artificial insemination in sheep.$h[electronic resource] 260 $c2017 500 $aArticle history: Received 25 April 2016; Received in revised form; 28 September 2016; Accepted 30 November 2016; Available online 2 December 2016 520 $aABSTRACT. The aim of the experiment was to evaluate the reproductive performance of ewes synchronized with two doses of prostaglandin F2a (PG) at different intervals and inseminated at a fixed time. During the breeding season (April to June), 370 multiparous Corriedale ewes were assigned to five groups according to body condition score and body weight, and synchronized with two doses of PG administered 7, 10, 12, 14 or 16 days apart (groups PG7, PG10, PG12, PG14 or PG16; n ¼ 73, 76, 74, 72, 75; respectively). Cervical timed artificial insemination (Day 0) was performed at 48 ± 1.0 h (group PG7) or 56 ± 1.0 h (groups PG10, PG12, PG14 and PG16) after the second PG injection, with diluted fresh semen pooled from six adult rams. The percentage of ovulating ewes after the second PG injection and the ovulation rate (number of corpus luteum/ovulating ewes) were assessed on Day 10 by trans-rectal ultrasonography. The rate of non return to service (ewes not returning to service/inseminated ewes 100; NRR-21) was evaluated using painted vasectomized rams. Pregnancy rate (pregnant ewes/inseminated ewes 100) and prolificacy (foetuses/pregnant ewes) were determined on Day 60 by trans-abdominal ultrasonography. Higher NRR-21 and pregnancy rates was observed in groups PG12 (46.0%, 46.0%), PG14 (59.7%, 56.9%) and PG16 (58.7%, 56.0%) compared to PG7 (30.1%, 28.8%) and PG10 (30.3%, 30.3%; respectively P < 0.05). No significant differences were observed in the percentage of ovulating ewes, ovulation rate and prolificacy among groups (P > 0.05). Under the condition of this trial, 12, 14 or 16 days interval between PG injections enhances the pregnancy rate of ewes at cervical timed artificial insemination with fresh semen. © 2016 Elsevier Inc. All rights reserved. 650 $aOVEJA 650 $aOVINOS 653 $aEWE 653 $aFERTILITY 653 $aOESTRUS SYNCHRONIZATION 653 $aOVULATION RATE 653 $aPROTAGLANDIN 653 $aTIMED ARTIFICAL INSEMINATION 700 1 $aVIÑOLES, C. 700 1 $aOLIVERA-MUZANTE, J. 773 $tTheriogenology, 2017$gv. 90, p. 109-113.
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INIA Las Brujas (LB) |
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
30/09/2014 |
Actualizado : |
30/05/2018 |
Tipo de producción científica : |
Documentos |
Autor : |
SOARES DE LIMA, J.; ROVIRA, P.J.; LAGOMARSINO, X.; MONTOSSI, F.; LUZARDO, S. |
Afiliación : |
JUAN MANUEL SOARES DE LIMA LAPETINA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; PABLO JUAN ROVIRA SANZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; XIMENA MARIA LAGOMARSINO LARRIERA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; FABIO MARCELO MONTOSSI PORCHILE, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; SANTIAGO FELIPE LUZARDO VILLAR, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
Título : |
Evaluación económica de estrategias de suplementación invernal en vacunos. |
Fecha de publicación : |
2014 |
Fuente / Imprenta : |
ln: INIA TREINTA Y TRES. Seminario de actualización técnica: estrategias de intensificación ganadera. 2014, INIA Treinta y Tres, Treinta y Tres, Uruguay. |
Páginas : |
p. 39-47 |
Serie : |
(INIA Serie Actividades de Difusión ; 734) |
ISSN : |
1688-9258 |
Idioma : |
Español |
Thesagro : |
ANALISIS ECONÓMICO; BOVINOS; SUPLEMENTACIÓN. |
Asunto categoría : |
L02 Alimentación animal |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/7954/1/ad-734-p.39-47.pdf
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Marc : |
LEADER 00766naa a2200229 a 4500 001 1050735 005 2018-05-30 008 2014 bl uuuu u00u1 u #d 022 $a1688-9258 100 1 $aSOARES DE LIMA, J. 245 $aEvaluación económica de estrategias de suplementación invernal en vacunos. 260 $c2014 300 $ap. 39-47 490 $a(INIA Serie Actividades de Difusión ; 734) 650 $aANALISIS ECONÓMICO 650 $aBOVINOS 650 $aSUPLEMENTACIÓN 700 1 $aROVIRA, P.J. 700 1 $aLAGOMARSINO, X. 700 1 $aMONTOSSI, F. 700 1 $aLUZARDO, S. 773 $tln: INIA TREINTA Y TRES. Seminario de actualización técnica: estrategias de intensificación ganadera. 2014, INIA Treinta y Tres, Treinta y Tres, Uruguay.
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