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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 : |
15/06/2022 |
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Actualizado : |
15/06/2022 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
TSCHOPP, J.C.; MACAGNO, A.J.; MAPLETOFT, R.J.; MENCHACA, A.; BÓ, G. A. |
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Afiliación : |
JUAN CARLOS TSCHOPP, Instituto de Reproducción Animal Córdoba (IRAC), Córdoba, Argentina; Instituto A.P. de Ciencias Básicas y Aplicadas, Medicina Veterinaria, Universidad Nacional de Villa María, Villa del Rosario, Córdoba, Argentina; ALEJANDRO J. MACAGNO, Instituto de Reproducción Animal Córdoba (IRAC), Córdoba, Argentina; Instituto A.P. de Ciencias Básicas y Aplicadas, Medicina Veterinaria, Universidad Nacional de Villa María, Villa del Rosario, Córdoba, Argentina; REUBEN J. MAPLETOFT, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada; JOSE ALEJO MENCHACA BARBEITO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay; GABRIEL A. BÓ, Instituto de Reproducción Animal Córdoba (IRAC), Córdoba, Argentina; Instituto A.P. de Ciencias Básicas y Aplicadas, Medicina Veterinaria, Universidad Nacional de Villa María, Villa del Rosario, Córdoba, Argentina. |
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Título : |
Effect of the addition of GnRH and a second prostaglandin F2α treatment on pregnancy per artificial insemination in lactating dairy cows submitted to an estradiol/progesterone-based timed-AI protocol. |
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Fecha de publicación : |
2022 |
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Fuente / Imprenta : |
Theriogenology, 2022, Volume 188, Pages 63-70. doi: https://doi.org/10.1016/j.theriogenology.2022.05.019 |
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ISSN : |
0093-691X |
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DOI : |
10.1016/j.theriogenology.2022.05.019 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 23 February 2022; Received in revised form 23 May 2022; Accepted 24 May 2022; Available online 27 May 2022; To be published August 2022.
Corresponding author: Bó, G.A.; Instituto de Reproducción Animal Córdoba (IRAC), Zona Rural General Paz, Córdoba, Uruguay; email:gabrielbo62@gmail.com --
This research was supported by Fondo Nacional de Ciencia y Tecnología (FONCYT PICT 2017?4550), Instituto de Investigación Universidad Nacional de Villa María (UNVM), and Instituto de Reproducción Animal de Córdoba (IRAC). |
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Contenido : |
ABSTRACT - Two experiments determined whether the addition of GnRH at the beginning of an estradiol (E2)/progesterone (P4)- based synchronization protocol and/or a second dose of prostaglandin F2α (PGF2α) the day before P4 device removal improves pregnancy rate in lactating dairy cows. On Day 0, all cows received a CIDR-B device and 2 mg i.m. estradiol benzoate, and half received 200 μg i.m. gonadorelin acetate (GnRH). On Day 7, cows were further subdivided to receive PGF2α (500 μg i.m. cloprostenol) or no PGF2α treatment. On Day 8, CIDR-B were removed, and all cows received PGF2α, 1 mg estradiol cypionate and 400 IU eCG i.m., and an estrus detection aid. Experiment 1 was designed to evaluate the effect of treatments on follicular development from P4 device removal to ovulation, expression of estrus, time of ovulation and serum P4 concentrations. Cows (n = 76) were examined by ultrasonography and bled for serum P4 determinations every 12 h from the time of P4 device removal but were not inseminated. In Experiment 2, all cows (n = 1036) were inseminated based on estrus detection using tail-paint. Cows with >50% of the paint rubbed-off by 48 h after P4 device removal were inseminated at that time, whereas those not in estrus received 100 μg i.m. of GnRH and were inseminated 12 h later. In Experiment 1, the interval from P4 device removal to ovulation was 71.7 ± 1.5 h and did not differ among groups. However, cows that received 2 injections of PGF2α had a greater (P < 0.01) estrus rate and lower (P < 0.01) P4 concentrations at 48 h after P4 device removal than those that received 1 PGF2α (estrus rate: 86.8% vs 68.4% and P4 concentration: 0.12 ± 0.01 vs 0.36 ± 0.07, for 2 and 1 PGF2α, respectively). In Experiment 2, estrus rate was also influenced by the number of PGF2α treatments, regardless of whether cows received or did not receive GnRH on Day 0 (2 PGF2α: 84.7%, 438/517 vs 1 PGF2α: 65.7%, 341/519; P < 0.01). Furthermore, there was a GnRH treatment by number of PGF2α treatments interaction (P < 0.05) on P/AI that was attributed to greater (P < 0.05) P/AI in cows that received GnRH on Day 0 and 2 PGF2α than in the other three treatment groups (EB+1 PGF2α: 45.2%, 119/263; EB+2 PGF2α: 45.8%, 119/260; EB + GnRH + 1 PGF2α: 45.7%, 117/256 and EB + GnRH + 2 PGF2α: 57.2%, 147/257). It was concluded that the addition of GnRH on Day 0 and a second dose of PGF2α the day before P4 device removal improves P/AI in lactating dairy cows synchronized with an estradiol/P4-based protocol. © 2022 Elsevier Inc. MenosABSTRACT - Two experiments determined whether the addition of GnRH at the beginning of an estradiol (E2)/progesterone (P4)- based synchronization protocol and/or a second dose of prostaglandin F2α (PGF2α) the day before P4 device removal improves pregnancy rate in lactating dairy cows. On Day 0, all cows received a CIDR-B device and 2 mg i.m. estradiol benzoate, and half received 200 μg i.m. gonadorelin acetate (GnRH). On Day 7, cows were further subdivided to receive PGF2α (500 μg i.m. cloprostenol) or no PGF2α treatment. On Day 8, CIDR-B were removed, and all cows received PGF2α, 1 mg estradiol cypionate and 400 IU eCG i.m., and an estrus detection aid. Experiment 1 was designed to evaluate the effect of treatments on follicular development from P4 device removal to ovulation, expression of estrus, time of ovulation and serum P4 concentrations. Cows (n = 76) were examined by ultrasonography and bled for serum P4 determinations every 12 h from the time of P4 device removal but were not inseminated. In Experiment 2, all cows (n = 1036) were inseminated based on estrus detection using tail-paint. Cows with >50% of the paint rubbed-off by 48 h after P4 device removal were inseminated at that time, whereas those not in estrus received 100 μg i.m. of GnRH and were inseminated 12 h later. In Experiment 1, the interval from P4 device removal to ovulation was 71.7 ± 1.5 h and did not differ among groups. However, cows that received 2 injectio... Presentar Todo |
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Palabras claves : |
Dairy cows; Estrus; GnRH; Ovulation; PLATAFORMA DE SALUD ANIMAL; Timed-AI. |
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Asunto categoría : |
L10 Genética y mejoramiento animal |
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Marc : |
LEADER 04132naa a2200277 a 4500
001 1063305
005 2022-06-15
008 2022 bl uuuu u00u1 u #d
022 $a0093-691X
024 7 $a10.1016/j.theriogenology.2022.05.019$2DOI
100 1 $aTSCHOPP, J.C.
245 $aEffect of the addition of GnRH and a second prostaglandin F2α treatment on pregnancy per artificial insemination in lactating dairy cows submitted to an estradiol/progesterone-based timed-AI protocol.$h[electronic resource]
260 $c2022
500 $aArticle history: Received 23 February 2022; Received in revised form 23 May 2022; Accepted 24 May 2022; Available online 27 May 2022; To be published August 2022. Corresponding author: Bó, G.A.; Instituto de Reproducción Animal Córdoba (IRAC), Zona Rural General Paz, Córdoba, Uruguay; email:gabrielbo62@gmail.com -- This research was supported by Fondo Nacional de Ciencia y Tecnología (FONCYT PICT 2017?4550), Instituto de Investigación Universidad Nacional de Villa María (UNVM), and Instituto de Reproducción Animal de Córdoba (IRAC).
520 $aABSTRACT - Two experiments determined whether the addition of GnRH at the beginning of an estradiol (E2)/progesterone (P4)- based synchronization protocol and/or a second dose of prostaglandin F2α (PGF2α) the day before P4 device removal improves pregnancy rate in lactating dairy cows. On Day 0, all cows received a CIDR-B device and 2 mg i.m. estradiol benzoate, and half received 200 μg i.m. gonadorelin acetate (GnRH). On Day 7, cows were further subdivided to receive PGF2α (500 μg i.m. cloprostenol) or no PGF2α treatment. On Day 8, CIDR-B were removed, and all cows received PGF2α, 1 mg estradiol cypionate and 400 IU eCG i.m., and an estrus detection aid. Experiment 1 was designed to evaluate the effect of treatments on follicular development from P4 device removal to ovulation, expression of estrus, time of ovulation and serum P4 concentrations. Cows (n = 76) were examined by ultrasonography and bled for serum P4 determinations every 12 h from the time of P4 device removal but were not inseminated. In Experiment 2, all cows (n = 1036) were inseminated based on estrus detection using tail-paint. Cows with >50% of the paint rubbed-off by 48 h after P4 device removal were inseminated at that time, whereas those not in estrus received 100 μg i.m. of GnRH and were inseminated 12 h later. In Experiment 1, the interval from P4 device removal to ovulation was 71.7 ± 1.5 h and did not differ among groups. However, cows that received 2 injections of PGF2α had a greater (P < 0.01) estrus rate and lower (P < 0.01) P4 concentrations at 48 h after P4 device removal than those that received 1 PGF2α (estrus rate: 86.8% vs 68.4% and P4 concentration: 0.12 ± 0.01 vs 0.36 ± 0.07, for 2 and 1 PGF2α, respectively). In Experiment 2, estrus rate was also influenced by the number of PGF2α treatments, regardless of whether cows received or did not receive GnRH on Day 0 (2 PGF2α: 84.7%, 438/517 vs 1 PGF2α: 65.7%, 341/519; P < 0.01). Furthermore, there was a GnRH treatment by number of PGF2α treatments interaction (P < 0.05) on P/AI that was attributed to greater (P < 0.05) P/AI in cows that received GnRH on Day 0 and 2 PGF2α than in the other three treatment groups (EB+1 PGF2α: 45.2%, 119/263; EB+2 PGF2α: 45.8%, 119/260; EB + GnRH + 1 PGF2α: 45.7%, 117/256 and EB + GnRH + 2 PGF2α: 57.2%, 147/257). It was concluded that the addition of GnRH on Day 0 and a second dose of PGF2α the day before P4 device removal improves P/AI in lactating dairy cows synchronized with an estradiol/P4-based protocol. © 2022 Elsevier Inc.
653 $aDairy cows
653 $aEstrus
653 $aGnRH
653 $aOvulation
653 $aPLATAFORMA DE SALUD ANIMAL
653 $aTimed-AI
700 1 $aMACAGNO, A.J.
700 1 $aMAPLETOFT, R.J.
700 1 $aMENCHACA, A.
700 1 $aBÓ, G. A.
773 $tTheriogenology, 2022, Volume 188, Pages 63-70. doi: https://doi.org/10.1016/j.theriogenology.2022.05.019
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INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha actual : |
09/10/2014 |
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Actualizado : |
04/05/2020 |
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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 : |
DEL CAMPO, M.; BRITO, G.; SOARES DE LIMA, J.M.; HERNANDEZ, P.; MONTOSSI, F. |
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Afiliación : |
MARCIA DEL CAMPO GIGENA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; GUSTAVO WALTER BRITO DIAZ, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; JUAN MANUEL SOARES DE LIMA LAPETINA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; PILAR HERNANDEZ, ICTA, Universidad Politécnica de Valencia, Spain; FABIO MARCELO MONTOSSI PORCHILE, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Finishing diet, temperament and lairage time effects on carcass and meat quality traits in steers. |
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Fecha de publicación : |
2010 |
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Fuente / Imprenta : |
Meat Science, Volume 86, Issue 4, December 2010, Pages 908-914. Doi: https://doi.org/10.1016/j.meatsci.2010.07.014 |
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DOI : |
10.1016/j.meatsci.2010.07.014 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 1 February 2010 // Received in revised form 23 June 2010 // Accepted 19 July 2010. Acknowledgements: M. del Campo wishes to thank AECID (Spain) for the financial support of her Doctoral studies in Spain. The authors are grateful to the R&D&I Linguistic Assistance Office at the Universidad Politécnica de Valencia for their help in revising
and correcting this paper. |
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Contenido : |
Sixty Hereford (H) and Braford (B: 3/8 Zebu and 5/8 H) steers were finished on: D1) rangeland plus corn grain (1% of live weight) (H n= 15, B n= 15); and D2) high quality pasture (H n= 15, B n= 15) to study the effect of diet, temperament and lairage time on carcass and meat quality. Steers were slaughtered the same day in two groups, spending 15 and 3 h in pens, respectively (50% from D1, 50% from D2 in each group). Animals from D1 had better carcass performance without effect of the diet on meat quality. Regardless of breed, calmer steers showed higher average daily gain and lower shear force values. Carcasses from animals in the long lairage group had a better rate of pH decline and more tender meat, suggesting that more than 3 h preslaughter time should be necessary to rest and recover, mainly depending on lairage conditions. |
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Palabras claves : |
DIET; LAIRAGE TIME; STEERS; TEMPERAMENT; TENDERNESS. |
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Thesagro : |
CARNE. |
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Asunto categoría : |
L01 Ganadería |
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Marc : |
LEADER 02013naa a2200265 a 4500
001 1051003
005 2020-05-04
008 2010 bl uuuu u00u1 u #d
024 7 $a10.1016/j.meatsci.2010.07.014$2DOI
100 1 $aDEL CAMPO, M.
245 $aFinishing diet, temperament and lairage time effects on carcass and meat quality traits in steers.
260 $c2010
500 $aArticle history: Received 1 February 2010 // Received in revised form 23 June 2010 // Accepted 19 July 2010. Acknowledgements: M. del Campo wishes to thank AECID (Spain) for the financial support of her Doctoral studies in Spain. The authors are grateful to the R&D&I Linguistic Assistance Office at the Universidad Politécnica de Valencia for their help in revising and correcting this paper.
520 $aSixty Hereford (H) and Braford (B: 3/8 Zebu and 5/8 H) steers were finished on: D1) rangeland plus corn grain (1% of live weight) (H n= 15, B n= 15); and D2) high quality pasture (H n= 15, B n= 15) to study the effect of diet, temperament and lairage time on carcass and meat quality. Steers were slaughtered the same day in two groups, spending 15 and 3 h in pens, respectively (50% from D1, 50% from D2 in each group). Animals from D1 had better carcass performance without effect of the diet on meat quality. Regardless of breed, calmer steers showed higher average daily gain and lower shear force values. Carcasses from animals in the long lairage group had a better rate of pH decline and more tender meat, suggesting that more than 3 h preslaughter time should be necessary to rest and recover, mainly depending on lairage conditions.
650 $aCARNE
653 $aDIET
653 $aLAIRAGE TIME
653 $aSTEERS
653 $aTEMPERAMENT
653 $aTENDERNESS
700 1 $aBRITO, G.
700 1 $aSOARES DE LIMA, J.M.
700 1 $aHERNANDEZ, P.
700 1 $aMONTOSSI, F.
773 $tMeat Science, Volume 86, Issue 4, December 2010, Pages 908-914. Doi: https://doi.org/10.1016/j.meatsci.2010.07.014
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