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 | Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
11/06/2020 |
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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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Autor : |
DO CARMO, M.; CARDOZO, G.; MECATTI, F.; SOCA, P.; HIRATA, M. |
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Afiliación : |
MARTÍN DO CARMO, Departamento de Sistemas Agrarios y Paisajes Culturales, Centro Universitario de la Región Este, Rocha, Uruguay.; GERONIMO AGUSTIN CARDOZO CABANELAS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FULVIA MECATTI, Department of Statistics, Università degli Studi di Milano-Bicocca.; PABLO SOCA, Universidad de la República, School of Agronomy, EEMAC.; MASAHIKO HIRATA, Department of Animal and Grassland Sciences, University of Miyazaki. |
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Título : |
Number of samples for accurate visual estimation of mean herbage mass in Campos grasslands. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Agronomy Journal, July 2020, Vol. 112(4), p. 2734-2740. Doi: https://doi.org/10.1002/agj2.20237 |
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DOI : |
DOI: 10.1002/agj2.20237 |
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Idioma : |
Inglés |
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Notas : |
Article history: Manuscript received: 23 October 2019. Manuscript revised: 23 March 2020. Manuscript accepted: 01 April 2020. Accepted manuscript online: 09 April 2020. Version of Record online: 19 May 2020. Published July 2020. |
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Contenido : |
The number of samples is a major issue when estimating the mean herbage mass of grazed paddocks. The aim of this study was to assess the number of samples required for accurate visual estimation of mean herbage mass in relation to the herbage mass heterogeneity and size of paddocks. Data were collected across scales of space and time (273 sampling events) from paddocks on Campos grasslands in Uruguay, using the visual estimation technique. The mean herbage mass of the paddocks ranged from 270 to 6350 kg DM ha−1 with coefficient of variation (CV) of 0.13 to 1.26. Twenty-four events representing four levels of herbage mass heterogeneity (CV = 0.3, 0.5, 0.7 and 1.0) × three levels of paddock size (small, 5?13 ha; medium, 41?67 ha; large, 100?140 ha) were chosen (two replicates per group), and analyzed for the probability that the estimation error exceeded 10% of the mean (10% error probability) using the bootstrap technique. The number of samples required for
controlling the 10% error probability below 0.1 increased gradually from 50 to 150 per paddock as the CV increased from 0.3 to 0.7, then sharply to 350 until the CV increased to 1.0, with no effect of paddock size. Taking account of the distribution of CV (< 0.7 in nearly 80% of the events), we propose a general recommendation to take a minimum of 150 samples per paddock for accurate estimation of mean herbage mass in Campos grasslands irrespective of the size of paddocks. |
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Palabras claves : |
ANIMAL PRODUCTION; E-TANIN; ESTIMACION DE BIOMASA; FIELD IMPROVEMENT; LOTUS PEDUNCULATUS; MEJORAMIENTO DE CAMPO; MEJORAMIENTO DE CAMPO NATURAL; PRODUCCIÓN ANIMAL. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02569naa a2200289 a 4500
001 1061106
005 2021-02-22
008 2020 bl uuuu u00u1 u #d
024 7 $aDOI: 10.1002/agj2.20237$2DOI
100 1 $aDO CARMO, M.
245 $aNumber of samples for accurate visual estimation of mean herbage mass in Campos grasslands.$h[electronic resource]
260 $c2020
500 $aArticle history: Manuscript received: 23 October 2019. Manuscript revised: 23 March 2020. Manuscript accepted: 01 April 2020. Accepted manuscript online: 09 April 2020. Version of Record online: 19 May 2020. Published July 2020.
520 $aThe number of samples is a major issue when estimating the mean herbage mass of grazed paddocks. The aim of this study was to assess the number of samples required for accurate visual estimation of mean herbage mass in relation to the herbage mass heterogeneity and size of paddocks. Data were collected across scales of space and time (273 sampling events) from paddocks on Campos grasslands in Uruguay, using the visual estimation technique. The mean herbage mass of the paddocks ranged from 270 to 6350 kg DM ha−1 with coefficient of variation (CV) of 0.13 to 1.26. Twenty-four events representing four levels of herbage mass heterogeneity (CV = 0.3, 0.5, 0.7 and 1.0) × three levels of paddock size (small, 5?13 ha; medium, 41?67 ha; large, 100?140 ha) were chosen (two replicates per group), and analyzed for the probability that the estimation error exceeded 10% of the mean (10% error probability) using the bootstrap technique. The number of samples required for controlling the 10% error probability below 0.1 increased gradually from 50 to 150 per paddock as the CV increased from 0.3 to 0.7, then sharply to 350 until the CV increased to 1.0, with no effect of paddock size. Taking account of the distribution of CV (< 0.7 in nearly 80% of the events), we propose a general recommendation to take a minimum of 150 samples per paddock for accurate estimation of mean herbage mass in Campos grasslands irrespective of the size of paddocks.
653 $aANIMAL PRODUCTION
653 $aE-TANIN
653 $aESTIMACION DE BIOMASA
653 $aFIELD IMPROVEMENT
653 $aLOTUS PEDUNCULATUS
653 $aMEJORAMIENTO DE CAMPO
653 $aMEJORAMIENTO DE CAMPO NATURAL
653 $aPRODUCCIÓN ANIMAL
700 1 $aCARDOZO, G.
700 1 $aMECATTI, F.
700 1 $aSOCA, P.
700 1 $aHIRATA, M.
773 $tAgronomy Journal, July 2020, Vol. 112(4), p. 2734-2740. Doi: https://doi.org/10.1002/agj2.20237
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INIA Treinta y Tres (TT) |
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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 actual : |
26/02/2024 |
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Actualizado : |
26/02/2024 |
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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 : |
COSTA, M.; MANSILLA, F.; MANUEL SALA, J.; SARAVIA, A.; UBIOS, D.; LORES, P.; CAPOZZO, A.V.; FREIRE, T. |
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Afiliación : |
MONIQUE COSTA, Laboratorio de Inmunomodulación y Vacunas, Departamento de Inmunobiología, Facultad de Medicina, Universidad de La República, Montevideo, Uruguay; FLORENCIA MANSILLA, Instituto de Virología e Innovaciones Tecnológicas, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), INTA, Buenos Aires, Hurlingham, Argentina; JUAN MANUEL SALA, Estación Experimental Agropecuaria- Instituto Nacional de Tecnología Agropecuaria (INTA), Juan Pujol al Este s/n (3470), Corrientes, Mercedes, Argentina; ANDERSON SARAVIA DE MELO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; DIEGO UBIOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PABLO LORES, Laboratorio de Inmunomodulación y Vacunas, Departamento de Inmunobiología, Facultad de Medicina, Universidad de La República, Montevideo, Uruguay; ALEJANDRA VICTORIA CAPOZZO, Instituto de Virología e Innovaciones Tecnológicas, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas (CICVyA), INTA, Buenos Aires, Hurlingham, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; TERESA FREIRE, Laboratorio de Inmunomodulación y Vacunas, Departamento de Inmunobiología, Facultad de Medicina, Universidad de La República, Montevideo. |
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Título : |
Fasciola hepatica infection modifies lgG1 specific immune response to foot-and-mouth disease virus induced by vaccination. |
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Fecha de publicación : |
2024 |
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Fuente / Imprenta : |
Vaccine. 2024, Volume 42, Issue 3, Pages 541-547. https://doi.org/10.1016/j.vaccine.2023.12.067 |
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ISSN : |
0264-410X |
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DOI : |
10.1016/j.vaccine.2023.12.067 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 19 August 2023; Received in revised form 15 December 2023; Accepted 20 December 2023; Available online 6 January 2024. -- Correspondence: Freire, T.; UdelaR, Facultad de Medicina, Departamento de Inmunobiología, Gral. Flores 2125, Montevideo, Uruguay; email:tfreire@fmed.edu.uy -- Funding: Financial supports were provided by Programa de Desarrollo de Ciencias Básicas ( PEDECIBA ), Comisión Sectorial de Investigación Científica and Agencia Nacional de Investigación e Innovación (SNI-ANII and FCE_1_2019_1_156295) to Teresa Freire. Funding by GFRA Research to Florencia Mansilla was also provided. M. Costa was funded by ANII and CAP. A. V. Capozzo is a researcher of CONICET , Argentina. -- Supplementary data to this article can be found online at https://doi.org/10.1016/j.vaccine.2023.12.067 |
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Contenido : |
ABSTRACT.- Fasciola hepatica, a worldwide distributed helminth, has a robust immunoregulatory effect in the host, increasing the susceptibility to secondary infections. Foot and mouth disease (FMD) is a highly contagious acute vesicular viral disease effectively controlled by vaccination in endemic regions. Despite the evidence of immunoregulatory effects, the impact of fasciolosis on the immune response induced by FMD vaccination in cattle has never been assessed. Our objective was to evaluate whether the infection by F. hepatica in cattle influences the long-term immunity elicited by the currently used commercial FMD-inactivated vaccines. Aberdeen Angus steers negative for F. hepatica were vaccinated twice against FMD virus (FMDV) during the first 6 months of age using a commercial oil vaccine formulated with A24/Cruzeiro and O1/Campos strains. When maternal antibodies against F. hepatica were weaned (18--20 months of age) animals were divided into groups of 12 and infected or mock-infected with 500 metacercariae/animal. Individual serum samples were collected at 0-, 28-, 59-, 87- and 157-days post-infection (dpi). Indirect ELISAs were used to detect A24/Cruzeiro specific bovine IgG and IgG subtypes. The total IgG antibody levels and avidity against FMDV did not show significant differences between all the groups. The commercial vaccine induced higher IgG2 than IgG1 titers in vaccinated animals. Anti-FMDV IgG1 levels significantly decreased in the infected group at 28 dpi. In addition, the avidity of IgG1 FMDV-specific antibodies at day 28 in the infected group was reduced compared to the control. These results show that F. hepatica infection modified anamnestic responses against FMDV, reducing serum IgG1 titers and avidity. To our knowledge, this is the first report of immune-regulation of F. hepatica altering the immune response of FMD vaccines, one of the most globally used animal vaccines. © 2024 Elsevier Ltd MenosABSTRACT.- Fasciola hepatica, a worldwide distributed helminth, has a robust immunoregulatory effect in the host, increasing the susceptibility to secondary infections. Foot and mouth disease (FMD) is a highly contagious acute vesicular viral disease effectively controlled by vaccination in endemic regions. Despite the evidence of immunoregulatory effects, the impact of fasciolosis on the immune response induced by FMD vaccination in cattle has never been assessed. Our objective was to evaluate whether the infection by F. hepatica in cattle influences the long-term immunity elicited by the currently used commercial FMD-inactivated vaccines. Aberdeen Angus steers negative for F. hepatica were vaccinated twice against FMD virus (FMDV) during the first 6 months of age using a commercial oil vaccine formulated with A24/Cruzeiro and O1/Campos strains. When maternal antibodies against F. hepatica were weaned (18--20 months of age) animals were divided into groups of 12 and infected or mock-infected with 500 metacercariae/animal. Individual serum samples were collected at 0-, 28-, 59-, 87- and 157-days post-infection (dpi). Indirect ELISAs were used to detect A24/Cruzeiro specific bovine IgG and IgG subtypes. The total IgG antibody levels and avidity against FMDV did not show significant differences between all the groups. The commercial vaccine induced higher IgG2 than IgG1 titers in vaccinated animals. Anti-FMDV IgG1 levels significantly decreased in the infected group at 28 dpi.... Presentar Todo |
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Palabras claves : |
Fasciolosis; FMD vaccine; IgG avidity; Immune modulation; PLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL - INIA; Vaccine efficacy. |
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Asunto categoría : |
L01 Ganadería |
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Marc : |
LEADER 03751naa a2200313 a 4500
001 1064474
005 2024-02-26
008 2024 bl uuuu u00u1 u #d
022 $a0264-410X
024 7 $a10.1016/j.vaccine.2023.12.067$2DOI
100 1 $aCOSTA, M.
245 $aFasciola hepatica infection modifies lgG1 specific immune response to foot-and-mouth disease virus induced by vaccination.$h[electronic resource]
260 $c2024
500 $aArticle history: Received 19 August 2023; Received in revised form 15 December 2023; Accepted 20 December 2023; Available online 6 January 2024. -- Correspondence: Freire, T.; UdelaR, Facultad de Medicina, Departamento de Inmunobiología, Gral. Flores 2125, Montevideo, Uruguay; email:tfreire@fmed.edu.uy -- Funding: Financial supports were provided by Programa de Desarrollo de Ciencias Básicas ( PEDECIBA ), Comisión Sectorial de Investigación Científica and Agencia Nacional de Investigación e Innovación (SNI-ANII and FCE_1_2019_1_156295) to Teresa Freire. Funding by GFRA Research to Florencia Mansilla was also provided. M. Costa was funded by ANII and CAP. A. V. Capozzo is a researcher of CONICET , Argentina. -- Supplementary data to this article can be found online at https://doi.org/10.1016/j.vaccine.2023.12.067
520 $aABSTRACT.- Fasciola hepatica, a worldwide distributed helminth, has a robust immunoregulatory effect in the host, increasing the susceptibility to secondary infections. Foot and mouth disease (FMD) is a highly contagious acute vesicular viral disease effectively controlled by vaccination in endemic regions. Despite the evidence of immunoregulatory effects, the impact of fasciolosis on the immune response induced by FMD vaccination in cattle has never been assessed. Our objective was to evaluate whether the infection by F. hepatica in cattle influences the long-term immunity elicited by the currently used commercial FMD-inactivated vaccines. Aberdeen Angus steers negative for F. hepatica were vaccinated twice against FMD virus (FMDV) during the first 6 months of age using a commercial oil vaccine formulated with A24/Cruzeiro and O1/Campos strains. When maternal antibodies against F. hepatica were weaned (18--20 months of age) animals were divided into groups of 12 and infected or mock-infected with 500 metacercariae/animal. Individual serum samples were collected at 0-, 28-, 59-, 87- and 157-days post-infection (dpi). Indirect ELISAs were used to detect A24/Cruzeiro specific bovine IgG and IgG subtypes. The total IgG antibody levels and avidity against FMDV did not show significant differences between all the groups. The commercial vaccine induced higher IgG2 than IgG1 titers in vaccinated animals. Anti-FMDV IgG1 levels significantly decreased in the infected group at 28 dpi. In addition, the avidity of IgG1 FMDV-specific antibodies at day 28 in the infected group was reduced compared to the control. These results show that F. hepatica infection modified anamnestic responses against FMDV, reducing serum IgG1 titers and avidity. To our knowledge, this is the first report of immune-regulation of F. hepatica altering the immune response of FMD vaccines, one of the most globally used animal vaccines. © 2024 Elsevier Ltd
653 $aFasciolosis
653 $aFMD vaccine
653 $aIgG avidity
653 $aImmune modulation
653 $aPLATAFORMA DE INVESTIGACIÓN EN SALUD ANIMAL - INIA
653 $aVaccine efficacy
700 1 $aMANSILLA, F.
700 1 $aMANUEL SALA, J.
700 1 $aSARAVIA, A.
700 1 $aUBIOS, D.
700 1 $aLORES, P.
700 1 $aCAPOZZO, A.V.
700 1 $aFREIRE, T.
773 $tVaccine. 2024, Volume 42, Issue 3, Pages 541-547. https://doi.org/10.1016/j.vaccine.2023.12.067
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