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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 : |
09/07/2024 |
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Actualizado : |
09/07/2024 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
CUADRO, F.; GARCÍA PINTOS, C.; NÚÑEZ-OLIVERA, R.; BROCHADO, C.; BÓ, G.A.; MENCHACA, A. |
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Afiliación : |
FEDERICO CUADRO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay; CAMILA GARCÍA PINTOS BARCIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay; R. NÚÑEZ-OLIVERA, Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay; C. BROCHADO, Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay; G. 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; JOSE ALEJO MENCHACA BARBEITO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ORCID: https://orcid.org/0000-0002-2494-9574; Instituto de Reproducción Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay. |
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Título : |
Equine chorionic gonadotropin (eCG) treatment in heifers: Double ovulation, twinning rate, and pregnancy losses in twin pregnancies. |
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Complemento del título : |
Original Research Article. |
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Fecha de publicación : |
2024 |
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Fuente / Imprenta : |
Theriogenology, 2024, Volume 22, pages 213-218. https://doi.org/10.1016/j.theriogenology.2024.06.015 |
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ISSN : |
0093-691X |
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DOI : |
10.1016/j.theriogenology.2024.06.015 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 23 April 2024, Revised 18 June 2024, Accepted 20 June 2024, Available online 20 June 2024, Version of Record 24 June 2024, To be published 24 September 2024. -- Corresponding author: Instituto de Reproduccóon Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay. E-mail address: menchaca.alejo@gmail.com (A. Menchaca). -- This study was supported by the Fundación IRAUy. Richard Núñez-
Olivera, Camila García Pintos, and Alejo Menchaca are fellows of Sistema Nacional de Investigadores (SNI) in Uruguay. |
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Contenido : |
ABSTRACT.- This study aimed to evaluate the effects of different doses of equine chorionic gonadotropin (eCG; 200 and 300 IU) administered at the end of a fixed-time artificial insemination (FTAI) treatment protocol on ovulation, pregnancy, and twin rates in Bos taurus beef heifers. In addition, pregnancy losses in heifers with singleton and twin pregnancies were determined. A total of 2382 Angus heifers treated with a 6-day estradiol/progesteronebased protocol for FTAI (J-Synch protocol) were randomly allocated to two experimental groups to receive 200 or 300 IU of eCG administered intramuscularly at the time of intravaginal progesterone device removal; FTAI was performed from 60 to 72 h after device removal. The pregnancy rate did not differ (P = 0.89) between the 200 and 300 IU eCG groups. The number of corpus luteum induced by both eCG doses was determined by ultrasonographic examination 14 days after insemination and those treated with 300 IU of eCG had a greater ouble ovulation rate (P < 0.05). In addition, 300 IU eCG treated heifers had a higher twinning rate on day 30 of gestation (P < 0.05) and parturition (P < 0.05). Pregnancy losses from 30 days of gestation to calving did not differ between heifers treated with 200 and 300 IU of eCG (P = 0.70). However, regardless of the experimental group, heifers bearing twins had greater pregnancy losses than heifers with singletons (P < 0.05). In conclusion, reducing the dose of eCG from 300 to 200 IU under FTAI treatment protocol decreases double ovulation and twinning rates, maintaining a similar pregnancy rate in heifers. Nulliparous cows carrying two fetuses suffer greater pregnancy losses than cows with singletons.
© 2024 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies. MenosABSTRACT.- This study aimed to evaluate the effects of different doses of equine chorionic gonadotropin (eCG; 200 and 300 IU) administered at the end of a fixed-time artificial insemination (FTAI) treatment protocol on ovulation, pregnancy, and twin rates in Bos taurus beef heifers. In addition, pregnancy losses in heifers with singleton and twin pregnancies were determined. A total of 2382 Angus heifers treated with a 6-day estradiol/progesteronebased protocol for FTAI (J-Synch protocol) were randomly allocated to two experimental groups to receive 200 or 300 IU of eCG administered intramuscularly at the time of intravaginal progesterone device removal; FTAI was performed from 60 to 72 h after device removal. The pregnancy rate did not differ (P = 0.89) between the 200 and 300 IU eCG groups. The number of corpus luteum induced by both eCG doses was determined by ultrasonographic examination 14 days after insemination and those treated with 300 IU of eCG had a greater ouble ovulation rate (P < 0.05). In addition, 300 IU eCG treated heifers had a higher twinning rate on day 30 of gestation (P < 0.05) and parturition (P < 0.05). Pregnancy losses from 30 days of gestation to calving did not differ between heifers treated with 200 and 300 IU of eCG (P = 0.70). However, regardless of the experimental group, heifers bearing twins had greater pregnancy losses than heifers with singletons (P < 0.05). In conclusion, reducing the dose of eCG from 300 to 200 IU under FTAI treatment pro... Presentar Todo |
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Palabras claves : |
Calving rate; Equine chorionic gonadotropin; Fixed-time artificial insemination; PLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL - INIA; Pregnancy failure; Twinning rate. |
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Asunto categoría : |
L53 Fisiología Animal - Reproducción |
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Marc : |
LEADER 03350naa a2200289 a 4500
001 1064724
005 2024-07-09
008 2024 bl uuuu u00u1 u #d
022 $a0093-691X
024 7 $a10.1016/j.theriogenology.2024.06.015$2DOI
100 1 $aCUADRO, F.
245 $aEquine chorionic gonadotropin (eCG) treatment in heifers$bDouble ovulation, twinning rate, and pregnancy losses in twin pregnancies.$h[electronic resource]
260 $c2024
500 $aArticle history: Received 23 April 2024, Revised 18 June 2024, Accepted 20 June 2024, Available online 20 June 2024, Version of Record 24 June 2024, To be published 24 September 2024. -- Corresponding author: Instituto de Reproduccóon Animal Uruguay, Fundación IRAUy, Montevideo, Uruguay. E-mail address: menchaca.alejo@gmail.com (A. Menchaca). -- This study was supported by the Fundación IRAUy. Richard Núñez- Olivera, Camila García Pintos, and Alejo Menchaca are fellows of Sistema Nacional de Investigadores (SNI) in Uruguay.
520 $aABSTRACT.- This study aimed to evaluate the effects of different doses of equine chorionic gonadotropin (eCG; 200 and 300 IU) administered at the end of a fixed-time artificial insemination (FTAI) treatment protocol on ovulation, pregnancy, and twin rates in Bos taurus beef heifers. In addition, pregnancy losses in heifers with singleton and twin pregnancies were determined. A total of 2382 Angus heifers treated with a 6-day estradiol/progesteronebased protocol for FTAI (J-Synch protocol) were randomly allocated to two experimental groups to receive 200 or 300 IU of eCG administered intramuscularly at the time of intravaginal progesterone device removal; FTAI was performed from 60 to 72 h after device removal. The pregnancy rate did not differ (P = 0.89) between the 200 and 300 IU eCG groups. The number of corpus luteum induced by both eCG doses was determined by ultrasonographic examination 14 days after insemination and those treated with 300 IU of eCG had a greater ouble ovulation rate (P < 0.05). In addition, 300 IU eCG treated heifers had a higher twinning rate on day 30 of gestation (P < 0.05) and parturition (P < 0.05). Pregnancy losses from 30 days of gestation to calving did not differ between heifers treated with 200 and 300 IU of eCG (P = 0.70). However, regardless of the experimental group, heifers bearing twins had greater pregnancy losses than heifers with singletons (P < 0.05). In conclusion, reducing the dose of eCG from 300 to 200 IU under FTAI treatment protocol decreases double ovulation and twinning rates, maintaining a similar pregnancy rate in heifers. Nulliparous cows carrying two fetuses suffer greater pregnancy losses than cows with singletons. © 2024 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
653 $aCalving rate
653 $aEquine chorionic gonadotropin
653 $aFixed-time artificial insemination
653 $aPLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL - INIA
653 $aPregnancy failure
653 $aTwinning rate
700 1 $aGARCÍA PINTOS, C.
700 1 $aNÚÑEZ-OLIVERA, R.
700 1 $aBROCHADO, C.
700 1 $aBÓ, G.A.
700 1 $aMENCHACA, A.
773 $tTheriogenology, 2024, Volume 22, pages 213-218. https://doi.org/10.1016/j.theriogenology.2024.06.015
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Registro completo
|
|
Biblioteca (s) : |
INIA Las Brujas. |
|
Fecha actual : |
22/02/2021 |
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Actualizado : |
22/02/2021 |
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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 : |
VALLE, D.; MUJICA, V.; SILVERA, M.; BORGES, A.; ZOPPOLO, R.; MORELLI, E. |
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Afiliación : |
DIANA VALLE LOPEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIA VALENTINA MUJICA TELIZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIANA SILVERA ORREGO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; A. BORGES, Universidad de la Repu?blica, Facultad de Agronom??a, Montevideo, Uruguay; ROBERTO JOSE ZOPPOLO GOLDSCHMIDT, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; E. MORELLI, Universidad de la Repu?blica, Facultad de Ciencias, Montevideo, Uruguay. |
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Título : |
Effect of the ground cover management on Cacopsylla bidens (Sulc, 1907) populations in pear orchards. [Conference paper]. |
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Fecha de publicación : |
2021 |
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Fuente / Imprenta : |
Acta Horticulturae, February 2021, N°1303, p. 375-380. DOI: https://doi.org/10.17660/ActaHortic.2021.1303.52 |
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ISSN : |
0567-7572 (print); 2406-6168 (electronic) |
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DOI : |
10.17660/ActaHortic.2021.1303.52 |
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Idioma : |
Inglés |
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Notas : |
Article history: Published 5 February 2021. In: Acta Horticulturae (ISHS) 1303: XIII International Pear Symposium, Montevideo, Uruguay. Conveners: Roberto Zoppolo, Danilo Cabrera. Editors: Roberto Zoppolo, Danilo Cabrera, D. Granatstein. |
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Contenido : |
Abstract:
Cacopsylla bidens (?ulc, 1907) is one of the key pests of pear. Its management has been based on broad-spectrum insecticides, which cause the appearance of resistance and the disappearance of the population of the natural controllers. This fact makes it necessary to find alternative strategies to control this pest, and the biological control can be a sustainable solution in the long term. The aim of this work was to evaluate the effect of the ground cover management on psyllid populations and its natural enemies and register the natural enemies' families present in Uruguay. Sampling was conducted in southern Uruguay, between 2013 and 2015. Two treatments were evaluated: regular cut of spontaneous vegetation of interrow with herbicide in the row, and uncut vegetation of the interrow with no herbicide. To determine the presence of beneficial arthropods, a garden vacuum cleaner was used on a weekly basis. Psylla catches were significantly lower in the uncut treatment compared to the other treatment. Natural enemies, on the contrary, were higher in the uncut treatment. The pool of natural enemies found was present throughout the year and was composed of predators belonging to the families Anthocoridae, Miridae, Chrysopidae, Coccinellidae, Syrphidae and the order Aranae, as well as parasitoids belonging to the family Encyrtidae. These results allow us to conclude that treatment without management of the ground cover generates a condition beneficial for the increase of populations of natural enemies, probably due to better feeding and multiplication conditions. This beneficial fauna seems to control psyllid populations providing an alternative for management of pear psyllid, reducing the use of insecticides in the orchards.
@ International Society for Horticultural Science. MenosAbstract:
Cacopsylla bidens (?ulc, 1907) is one of the key pests of pear. Its management has been based on broad-spectrum insecticides, which cause the appearance of resistance and the disappearance of the population of the natural controllers. This fact makes it necessary to find alternative strategies to control this pest, and the biological control can be a sustainable solution in the long term. The aim of this work was to evaluate the effect of the ground cover management on psyllid populations and its natural enemies and register the natural enemies' families present in Uruguay. Sampling was conducted in southern Uruguay, between 2013 and 2015. Two treatments were evaluated: regular cut of spontaneous vegetation of interrow with herbicide in the row, and uncut vegetation of the interrow with no herbicide. To determine the presence of beneficial arthropods, a garden vacuum cleaner was used on a weekly basis. Psylla catches were significantly lower in the uncut treatment compared to the other treatment. Natural enemies, on the contrary, were higher in the uncut treatment. The pool of natural enemies found was present throughout the year and was composed of predators belonging to the families Anthocoridae, Miridae, Chrysopidae, Coccinellidae, Syrphidae and the order Aranae, as well as parasitoids belonging to the family Encyrtidae. These results allow us to conclude that treatment without management of the ground cover generates a condition beneficial for the increase of p... Presentar Todo |
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Palabras claves : |
Conservational biological control; Entomophagos; Integrated pest management; WILLIAM'S PEAR. |
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Thesagro : |
PSYLLIDAE. |
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Asunto categoría : |
H20 Enfermedades de las plantas |
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Marc : |
LEADER 02965naa a2200277 a 4500
001 1061747
005 2021-02-22
008 2021 bl uuuu u00u1 u #d
022 $a0567-7572 (print); 2406-6168 (electronic)
024 7 $a10.17660/ActaHortic.2021.1303.52$2DOI
100 1 $aVALLE, D.
245 $aEffect of the ground cover management on Cacopsylla bidens (Sulc, 1907) populations in pear orchards. [Conference paper].$h[electronic resource]
260 $c2021
500 $aArticle history: Published 5 February 2021. In: Acta Horticulturae (ISHS) 1303: XIII International Pear Symposium, Montevideo, Uruguay. Conveners: Roberto Zoppolo, Danilo Cabrera. Editors: Roberto Zoppolo, Danilo Cabrera, D. Granatstein.
520 $aAbstract: Cacopsylla bidens (?ulc, 1907) is one of the key pests of pear. Its management has been based on broad-spectrum insecticides, which cause the appearance of resistance and the disappearance of the population of the natural controllers. This fact makes it necessary to find alternative strategies to control this pest, and the biological control can be a sustainable solution in the long term. The aim of this work was to evaluate the effect of the ground cover management on psyllid populations and its natural enemies and register the natural enemies' families present in Uruguay. Sampling was conducted in southern Uruguay, between 2013 and 2015. Two treatments were evaluated: regular cut of spontaneous vegetation of interrow with herbicide in the row, and uncut vegetation of the interrow with no herbicide. To determine the presence of beneficial arthropods, a garden vacuum cleaner was used on a weekly basis. Psylla catches were significantly lower in the uncut treatment compared to the other treatment. Natural enemies, on the contrary, were higher in the uncut treatment. The pool of natural enemies found was present throughout the year and was composed of predators belonging to the families Anthocoridae, Miridae, Chrysopidae, Coccinellidae, Syrphidae and the order Aranae, as well as parasitoids belonging to the family Encyrtidae. These results allow us to conclude that treatment without management of the ground cover generates a condition beneficial for the increase of populations of natural enemies, probably due to better feeding and multiplication conditions. This beneficial fauna seems to control psyllid populations providing an alternative for management of pear psyllid, reducing the use of insecticides in the orchards. @ International Society for Horticultural Science.
650 $aPSYLLIDAE
653 $aConservational biological control
653 $aEntomophagos
653 $aIntegrated pest management
653 $aWILLIAM'S PEAR
700 1 $aMUJICA, V.
700 1 $aSILVERA, M.
700 1 $aBORGES, A.
700 1 $aZOPPOLO, R.
700 1 $aMORELLI, E.
773 $tActa Horticulturae, February 2021, N°1303, p. 375-380. DOI: https://doi.org/10.17660/ActaHortic.2021.1303.52
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