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 | Acceso al texto completo restringido a Biblioteca INIA Tacuarembó. Por información adicional contacte bibliotb@tb.inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha : |
25/09/2020 |
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Actualizado : |
25/09/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
CUNHA, F.; CUSHMAN, R.A.; SANTA CRUZ, R.; DE NAVA, G.; VIÑOLES, C. |
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Afiliación : |
FERNANDO CUNHA, Masters Student, Facultad de Veterinaria, Universidad de la República, Montevideo, Uruguay. Liberal profession vet, Uruguay; ROBERT A. CUSHMAN, USDA, ARS, U.S. Meat Animal Research Center, Clay Center, NE, USA; RODRIGO SANTA CRUZ, Polo Agroforestal, Estación Experimental Bernardo Rosengurtt, Facultad de Agronomía, Universidad de la República, Cerro Largo, Uruguay; GUILLERMO DE NAVA, Liberal profession vet, Uruguay; CAROLINA VIÑOLES GIL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. Polo Agroforestal, Estación Experimental Bernardo Rosengurtt, Facultad de Agronomía, Universidad de la República, Cerro Largo, Uruguay. |
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Título : |
Antral follicular count has limited impact in the selection of more fertile beef heifers. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Livestock Science, November 2020, Volume 241, Article number 104230. Doi: https://doi.org/10.1016/j.livsci.2020.104230 |
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DOI : |
DOI: 10.1016/j.livsci.2020.104230 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 7 April 2020, Revised 20 July 2020, Accepted 25 August 2020, Available online 26 August 2020. Acknowledgments: This work was supported by the project ?Marcadores de Fertilidad para Ganado de Carne? of the National Institute of Agricultural Research (INIA). This research was partially supported by ARS Research Project 3040-31000-096-00D (RAC). The authors would like to acknowledge Pablo Cuadro from INIA and all the staff of the commercial farm ?Las Grutas?. We would also like to thank Pablo González for his
contribution with statistic. Corresponding author: E-mail address: cvinoles@adinet.com.uy (C. Viñoles). |
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Contenido : |
ABSTRACT: The selection of replacements using applications such as reproductive tract scores and antral follicle count may be useful to eliminate less fertile animals before breeding. Previously, we reported that heifers with increased numbers of follicles achieved puberty earlier than heifers with diminished numbers of follicles. We, therefore, hypothesized that heifers that achieved a reproductive tract score ?4 earlier in the breeding season would have greater numbers of follicles than heifers that achieved a reproductive tract score ?4 later in the breeding season. The uterus and ovaries of three hundred and fifty beef heifers from a commercial farm were evaluated by transrectal ultrasonography 20 days before breeding and parameters of growth and development were recorded. The antral follicle count (AFC) of both ovaries was recorded and the heifers assigned a reproductive tract score (1
to 5). Only heifers with a reproductive tract score ?4 entered to two fixed timed artificial insemination (FTAI) programs. The first group (FTAI1 , n = 269) started the day of the beginning of the breeding period and the second group (FTAI2 , n = 61) one month later. The rest were naturally mated (no FTAI, n = 20). Serial pregnancy scanning was performed throughout the breeding season and 45 days after bull removal to estimate the day of conception. Data indicative of growth and development were analysed using the REG and GLM
procedures of SAS with FTAI (0, 1 and 2), AFC (low, medium and high), and the interaction as the independent variables. Reproductive tract development was negatively associated to AFC (P>0.0001). There was no interaction between FTAI and AFC (P>0.11). Heifers inseminated at FTAI1 were heavier and taller, had greater deposition of fat and muscle, and conceived earlier than those inseminated at FTAI2 (P<0.05); however, there was no difference in AFC between heifers inseminated in FTAI1 and FTAI2 (15.6 ± 0.4 vs. 16.7 ± 0.9 follicles, respectively; P = 0.3). Furthermore, conception rates did not differ statistically between heifers in FTAI1 and FTAI2 (P = 0.12). Antral follicle count influenced growth and carcass traits (P>0.05) and heifers in the High AFC class conceived approximately 1 week earlier than heifers in the Low and Medium AFC class (P<0.05). We conclude that pubertal heifers have less AFC, thus similar numbers were observed for heifers in both FTAI programs and no differences in pregnancy rate. Antral follicle count may allow for the selection of heifers that conceive earlier, but may result in a lower pregnancy rate. MenosABSTRACT: The selection of replacements using applications such as reproductive tract scores and antral follicle count may be useful to eliminate less fertile animals before breeding. Previously, we reported that heifers with increased numbers of follicles achieved puberty earlier than heifers with diminished numbers of follicles. We, therefore, hypothesized that heifers that achieved a reproductive tract score ?4 earlier in the breeding season would have greater numbers of follicles than heifers that achieved a reproductive tract score ?4 later in the breeding season. The uterus and ovaries of three hundred and fifty beef heifers from a commercial farm were evaluated by transrectal ultrasonography 20 days before breeding and parameters of growth and development were recorded. The antral follicle count (AFC) of both ovaries was recorded and the heifers assigned a reproductive tract score (1
to 5). Only heifers with a reproductive tract score ?4 entered to two fixed timed artificial insemination (FTAI) programs. The first group (FTAI1 , n = 269) started the day of the beginning of the breeding period and the second group (FTAI2 , n = 61) one month later. The rest were naturally mated (no FTAI, n = 20). Serial pregnancy scanning was performed throughout the breeding season and 45 days after bull removal to estimate the day of conception. Data indicative of growth and development were analysed using the REG and GLM
procedures of SAS with FTAI (0, 1 and 2), AFC (low, medium and ... Presentar Todo |
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Palabras claves : |
ANTRAL FOLLICLE COUNT; BEEF HEIFERS; FIXED TIME ARTIFICIAL INSEMINATION; PUBERTY; REPRODUCCIÓN ANIMAL. |
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Asunto categoría : |
L01 Ganadería |
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Marc : |
LEADER 04044naa a2200253 a 4500
001 1061348
005 2020-09-25
008 2020 bl uuuu u00u1 u #d
024 7 $aDOI: 10.1016/j.livsci.2020.104230$2DOI
100 1 $aCUNHA, F.
245 $aAntral follicular count has limited impact in the selection of more fertile beef heifers.$h[electronic resource]
260 $c2020
500 $aArticle history: Received 7 April 2020, Revised 20 July 2020, Accepted 25 August 2020, Available online 26 August 2020. Acknowledgments: This work was supported by the project ?Marcadores de Fertilidad para Ganado de Carne? of the National Institute of Agricultural Research (INIA). This research was partially supported by ARS Research Project 3040-31000-096-00D (RAC). The authors would like to acknowledge Pablo Cuadro from INIA and all the staff of the commercial farm ?Las Grutas?. We would also like to thank Pablo González for his contribution with statistic. Corresponding author: E-mail address: cvinoles@adinet.com.uy (C. Viñoles).
520 $aABSTRACT: The selection of replacements using applications such as reproductive tract scores and antral follicle count may be useful to eliminate less fertile animals before breeding. Previously, we reported that heifers with increased numbers of follicles achieved puberty earlier than heifers with diminished numbers of follicles. We, therefore, hypothesized that heifers that achieved a reproductive tract score ?4 earlier in the breeding season would have greater numbers of follicles than heifers that achieved a reproductive tract score ?4 later in the breeding season. The uterus and ovaries of three hundred and fifty beef heifers from a commercial farm were evaluated by transrectal ultrasonography 20 days before breeding and parameters of growth and development were recorded. The antral follicle count (AFC) of both ovaries was recorded and the heifers assigned a reproductive tract score (1 to 5). Only heifers with a reproductive tract score ?4 entered to two fixed timed artificial insemination (FTAI) programs. The first group (FTAI1 , n = 269) started the day of the beginning of the breeding period and the second group (FTAI2 , n = 61) one month later. The rest were naturally mated (no FTAI, n = 20). Serial pregnancy scanning was performed throughout the breeding season and 45 days after bull removal to estimate the day of conception. Data indicative of growth and development were analysed using the REG and GLM procedures of SAS with FTAI (0, 1 and 2), AFC (low, medium and high), and the interaction as the independent variables. Reproductive tract development was negatively associated to AFC (P>0.0001). There was no interaction between FTAI and AFC (P>0.11). Heifers inseminated at FTAI1 were heavier and taller, had greater deposition of fat and muscle, and conceived earlier than those inseminated at FTAI2 (P<0.05); however, there was no difference in AFC between heifers inseminated in FTAI1 and FTAI2 (15.6 ± 0.4 vs. 16.7 ± 0.9 follicles, respectively; P = 0.3). Furthermore, conception rates did not differ statistically between heifers in FTAI1 and FTAI2 (P = 0.12). Antral follicle count influenced growth and carcass traits (P>0.05) and heifers in the High AFC class conceived approximately 1 week earlier than heifers in the Low and Medium AFC class (P<0.05). We conclude that pubertal heifers have less AFC, thus similar numbers were observed for heifers in both FTAI programs and no differences in pregnancy rate. Antral follicle count may allow for the selection of heifers that conceive earlier, but may result in a lower pregnancy rate.
653 $aANTRAL FOLLICLE COUNT
653 $aBEEF HEIFERS
653 $aFIXED TIME ARTIFICIAL INSEMINATION
653 $aPUBERTY
653 $aREPRODUCCIÓN ANIMAL
700 1 $aCUSHMAN, R.A.
700 1 $aSANTA CRUZ, R.
700 1 $aDE NAVA, G.
700 1 $aVIÑOLES, C.
773 $tLivestock Science, November 2020, Volume 241, Article number 104230. Doi: https://doi.org/10.1016/j.livsci.2020.104230
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INIA Tacuarembó (TBO) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha actual : |
08/11/2022 |
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Actualizado : |
08/11/2022 |
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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 : |
PARODI, P.; ARMÚA-FERNÁNDEZ, M.T.; SCHANZEMBACH, M.; MIR, D.; BENÍTEZ-GALEANO, M.J.; RODRÍGUEZ-OSORIO, N.; RIVERO, R.; VENZAL, J.M. |
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Afiliación : |
PABLO ANDRÉS PARODI TEXEIRA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Laboratorio Regional Noroeste "Miguel C. Rubino", División de Laboratorios Veterinarios "Miguel C. Rubino", Paysandú, Uruguay; MARÍA T. ARMÚA-FERNÁNDEZ, Laboratorio de Vectores y enfermedades transmitidas, Departamento de Ciencias Biológicas, CENUR Litoral Norte - Salto, Universidad de la República, Salto, Uruguay; MARCOS SCHANZEMBACH, Laboratorio Regional Noroeste "Miguel C. Rubino", División de Laboratorios Veterinarios "Miguel C. Rubino", Paysandú, Uruguay; DAIANA MIR, Unidad de Genética y Bioinformática, Departamento de Ciencias Biológicas, CENUR Litoral Norte - Salto, Universidad de la República, Salto, Uruguay; MARÍA JOSÉ BENÍTEZ-GALEANO, Unidad de Genética y Bioinformática, Departamento de Ciencias Biológicas, CENUR Litoral Norte - Salto, Universidad de la República, Salto, Uruguay; NÉLIDA RODRÍGUEZ-OSORIO, Unidad de Genética y Bioinformática, Departamento de Ciencias Biológicas, CENUR Litoral Norte - Salto, Universidad de la República, Salto, Uruguay; RODOLFO RIVERO, Laboratorio Regional Noroeste "Miguel C. Rubino", División de Laboratorios Veterinarios "Miguel C. Rubino", Paysandú, Uruguay; JOSÉ M. VENZAL, Laboratorio de Vectores y enfermedades transmitidas, Departamento de Ciencias Biológicas, CENUR Litoral Norte - Salto, Universidad de la República, Salto, Uruguay. |
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Título : |
Characterization of strains of Anaplasma marginale from clinical cases in bovine using major surface protein 1a in Uruguay. |
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Fecha de publicación : |
2022 |
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Fuente / Imprenta : |
Frontiers in Veterinary Science, September 2022, Volume 920, Article 990228. OPEN ACCESS. doi: https://doi.org/10.3389/fvets.2022.990228 |
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ISSN : |
2297-1769 |
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DOI : |
10.3389/fvets.2022.990228 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 09 July 2022; Accepted 30 August 2022; Published 20 September 2022. -- Correspondence author: Parodi, P.; Instituto Nacional de Investigación Agropecuaria (INIA), Plataforma de Salud Animal, Estación experimental INIA Tacuarembó, Tacuarembó, Uruguay; email:pparodi@inia.org.uy -- This article is part of the Research Topic "Current Knowledge In Control And Immunoprophylaxis Of Tick-Borne Diseases Of Veterinary Importance: Special Focus In Diseases Of Cattle" (https://www.frontiersin.org/research-topics/37164/current-knowledge-in-control-and-immunoprophylaxis-of-tick-borne-diseases-of-veterinary-importance-s#articles ) |
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Contenido : |
ABSTRACT.- The major surface protein 1a (MSP1a) gene has been used to characterize Anaplasma marginale genetic diversity. This pathogen causes significant productivity and economic losses to the cattle industry. The objective of the present study was to report the first characterization of A. marginale genetic diversity in Uruguay based on MSP1a genotypes and their putative relationship with Rhipicephalus microplus. This cross-sectional study was conducted between 2016 and 2020. The study included whole blood samples from clinical cases of bovine anaplasmosis obtained from 30 outbreaks located in six Uruguay territorial departments. Diagnosis was performed using Giemsa-stained smears and confirmed by nested Polymerase Chance Reaction (nPCR) targeting the A. marginale major surface protein 5 gene. The genetic diversity of A. marginale strains was characterized by analyzing the microsatellite and tandem repeats of MSP1a.
Copyright © 2022 Parodi, Armúa-Fernández, Schanzembach, Mir, Benítez-Galeano, Rodríguez-Osorio, Rivero and Venzal. |
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Palabras claves : |
Anaplasma marginale; Bovine; Genotyping; MSP1a; PLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL; Uruguay. |
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Asunto categoría : |
L10 Genética y mejoramiento animal |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/16835/1/fvets-09-990228.pdf
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Marc : |
LEADER 02723naa a2200313 a 4500
001 1063713
005 2022-11-08
008 2022 bl uuuu u00u1 u #d
022 $a2297-1769
024 7 $a10.3389/fvets.2022.990228$2DOI
100 1 $aPARODI, P.
245 $aCharacterization of strains of Anaplasma marginale from clinical cases in bovine using major surface protein 1a in Uruguay.$h[electronic resource]
260 $c2022
500 $aArticle history: Received 09 July 2022; Accepted 30 August 2022; Published 20 September 2022. -- Correspondence author: Parodi, P.; Instituto Nacional de Investigación Agropecuaria (INIA), Plataforma de Salud Animal, Estación experimental INIA Tacuarembó, Tacuarembó, Uruguay; email:pparodi@inia.org.uy -- This article is part of the Research Topic "Current Knowledge In Control And Immunoprophylaxis Of Tick-Borne Diseases Of Veterinary Importance: Special Focus In Diseases Of Cattle" (https://www.frontiersin.org/research-topics/37164/current-knowledge-in-control-and-immunoprophylaxis-of-tick-borne-diseases-of-veterinary-importance-s#articles )
520 $aABSTRACT.- The major surface protein 1a (MSP1a) gene has been used to characterize Anaplasma marginale genetic diversity. This pathogen causes significant productivity and economic losses to the cattle industry. The objective of the present study was to report the first characterization of A. marginale genetic diversity in Uruguay based on MSP1a genotypes and their putative relationship with Rhipicephalus microplus. This cross-sectional study was conducted between 2016 and 2020. The study included whole blood samples from clinical cases of bovine anaplasmosis obtained from 30 outbreaks located in six Uruguay territorial departments. Diagnosis was performed using Giemsa-stained smears and confirmed by nested Polymerase Chance Reaction (nPCR) targeting the A. marginale major surface protein 5 gene. The genetic diversity of A. marginale strains was characterized by analyzing the microsatellite and tandem repeats of MSP1a. Copyright © 2022 Parodi, Armúa-Fernández, Schanzembach, Mir, Benítez-Galeano, Rodríguez-Osorio, Rivero and Venzal.
653 $aAnaplasma marginale
653 $aBovine
653 $aGenotyping
653 $aMSP1a
653 $aPLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL
653 $aUruguay
700 1 $aARMÚA-FERNÁNDEZ, M.T.
700 1 $aSCHANZEMBACH, M.
700 1 $aMIR, D.
700 1 $aBENÍTEZ-GALEANO, M.J.
700 1 $aRODRÍGUEZ-OSORIO, N.
700 1 $aRIVERO, R.
700 1 $aVENZAL, J.M.
773 $tFrontiers in Veterinary Science, September 2022, Volume 920, Article 990228. OPEN ACCESS. doi: https://doi.org/10.3389/fvets.2022.990228
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