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 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Treinta y Tres. |
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Fecha : |
04/11/2019 |
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Actualizado : |
23/04/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
LÓPEZ-MAZZ, C.; BALDI, F.; QUINTANS, G.; KENYON, P.R.; CORREA, O.; REGUEIRO, M.; ÁLVAREZ-OXILEY, A.; BANCHERO, G. |
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Afiliación : |
CARLOS LÓPEZ-MAZZ,, Universidad de la República (UdelaR)/ Facultad de Agronomía, Uruguay.; FERNANDO BALDI, Faculdade de Ciencias Agrárias e Veterinárias, São Paulo, Brazil.; GRACIELA QUINTANS ILARIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Sheep Research Centre, Institute of Veterinary, Animal and Biomedical Sciences, Massey University, New Zealand.; Universidad de la República (UdelaR)/ Facultad de Veterinaria, Uruguay.; Universidad de la República (UdelaR)/ Facultad de Agronomía, Uruguay.; Universidad de la República (UdelaR)/ Facultad de Agronomía, Uruguay.; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Effect of early shearing during gestation on the productive and reproductive behavior of female sheep offspring in their first 18 months of age. |
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Fecha de publicación : |
2020 |
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Fuente / Imprenta : |
Animal, 1 April 2020, Volume 14, Issue 4, Pages 807-813. Doi: https://doi.org/10.1017/S1751731119002441 |
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ISSN : |
1751-732X (Online) |
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DOI : |
10.1017/S1751731119002441 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 19 September 2018/ Accepted 17 September 2019 |
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Contenido : |
Abstract:The research has shown the interesting contributions of shearing in mid-gestation on the performance of lambs from birth to weaning. Other studies have reported that shearing at early pregnancy influences the development of the placenta and lamb live weight at birth. However, there was a lack of information on the effect of early-prepartum shearing on the behavior of the offspring from weaning onward. This study evaluated the effect of shearing ewes at 50 days of gestation on the growth, reproductive behavior and response to a gastrointestinal parasite challenge in the female offspring from weaning to 18 months old. Fifty-seven Polwarth female lambs were used, 22 being singles and 35 twins born to ewes either shorn at 50 days of pregnancy ( PS , n=23) or shorn at 62 days postpartum ( U , control, n=34) resulting in four subgroups: single lambs born to PS ewes (n=8), born to U ewes (n=14), twin lambs born to PS ewes (n=15) or born to U ewes (n=20). All progeny were managed together under improved pasture with a minimum forage allowance of 6% live weight on dry basis. Body weight, body condition score and fecal eggs count were recorded every 14 days from weaning to 18 months of age. Concentrations of progesterone were measured weekly (from 4 to 10 months of age and from 14 to 18 months of age) to establish the onset of puberty. Ovulation rate at an induced and a natural heat (545±1.0 and 562±1.0 day old) was recorded. Prepartum shearing did not affect the age at puberty or the ovulation rate of female offspring, but those born as singles were more precocious (P=0.03) and heavier (P=0.02) at puberty than twin born lambs. Both the average value of parasite egg count (P=0.0 7) and the Famacha index (P=0.02) for the entire study period were lower in lambs born to prepartum shorn ewes than those born to postpartum shorn ewes. In conclusion, shearing at 50 days of gestation did not affect the growth or the reproductive behavior of female offspring. However, female lambs born from ewe shorn during gestation showed a better response to the parasitic challenge, and further research is required to confirm this. MenosAbstract:The research has shown the interesting contributions of shearing in mid-gestation on the performance of lambs from birth to weaning. Other studies have reported that shearing at early pregnancy influences the development of the placenta and lamb live weight at birth. However, there was a lack of information on the effect of early-prepartum shearing on the behavior of the offspring from weaning onward. This study evaluated the effect of shearing ewes at 50 days of gestation on the growth, reproductive behavior and response to a gastrointestinal parasite challenge in the female offspring from weaning to 18 months old. Fifty-seven Polwarth female lambs were used, 22 being singles and 35 twins born to ewes either shorn at 50 days of pregnancy ( PS , n=23) or shorn at 62 days postpartum ( U , control, n=34) resulting in four subgroups: single lambs born to PS ewes (n=8), born to U ewes (n=14), twin lambs born to PS ewes (n=15) or born to U ewes (n=20). All progeny were managed together under improved pasture with a minimum forage allowance of 6% live weight on dry basis. Body weight, body condition score and fecal eggs count were recorded every 14 days from weaning to 18 months of age. Concentrations of progesterone were measured weekly (from 4 to 10 months of age and from 14 to 18 months of age) to establish the onset of puberty. Ovulation rate at an induced and a natural heat (545±1.0 and 562±1.0 day old) was recorded. Prepartum shearing did not affect the age at puber... Presentar Todo |
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Palabras claves : |
EARLY SHEARING; ESQUILA; FEMALE PROGEN; GROWTH; IMMUNITY; REPRODUCTION. |
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Thesagro : |
OVINOS. |
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Asunto categoría : |
L53 Fisiología Animal - Reproducción |
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Marc : |
LEADER 03203naa a2200325 a 4500
001 1060372
005 2021-04-23
008 2020 bl uuuu u00u1 u #d
022 $a1751-732X (Online)
024 7 $a10.1017/S1751731119002441$2DOI
100 1 $aLÓPEZ-MAZZ, C.
245 $aEffect of early shearing during gestation on the productive and reproductive behavior of female sheep offspring in their first 18 months of age.$h[electronic resource]
260 $c2020
500 $aArticle history: Received 19 September 2018/ Accepted 17 September 2019
520 $aAbstract:The research has shown the interesting contributions of shearing in mid-gestation on the performance of lambs from birth to weaning. Other studies have reported that shearing at early pregnancy influences the development of the placenta and lamb live weight at birth. However, there was a lack of information on the effect of early-prepartum shearing on the behavior of the offspring from weaning onward. This study evaluated the effect of shearing ewes at 50 days of gestation on the growth, reproductive behavior and response to a gastrointestinal parasite challenge in the female offspring from weaning to 18 months old. Fifty-seven Polwarth female lambs were used, 22 being singles and 35 twins born to ewes either shorn at 50 days of pregnancy ( PS , n=23) or shorn at 62 days postpartum ( U , control, n=34) resulting in four subgroups: single lambs born to PS ewes (n=8), born to U ewes (n=14), twin lambs born to PS ewes (n=15) or born to U ewes (n=20). All progeny were managed together under improved pasture with a minimum forage allowance of 6% live weight on dry basis. Body weight, body condition score and fecal eggs count were recorded every 14 days from weaning to 18 months of age. Concentrations of progesterone were measured weekly (from 4 to 10 months of age and from 14 to 18 months of age) to establish the onset of puberty. Ovulation rate at an induced and a natural heat (545±1.0 and 562±1.0 day old) was recorded. Prepartum shearing did not affect the age at puberty or the ovulation rate of female offspring, but those born as singles were more precocious (P=0.03) and heavier (P=0.02) at puberty than twin born lambs. Both the average value of parasite egg count (P=0.0 7) and the Famacha index (P=0.02) for the entire study period were lower in lambs born to prepartum shorn ewes than those born to postpartum shorn ewes. In conclusion, shearing at 50 days of gestation did not affect the growth or the reproductive behavior of female offspring. However, female lambs born from ewe shorn during gestation showed a better response to the parasitic challenge, and further research is required to confirm this.
650 $aOVINOS
653 $aEARLY SHEARING
653 $aESQUILA
653 $aFEMALE PROGEN
653 $aGROWTH
653 $aIMMUNITY
653 $aREPRODUCTION
700 1 $aBALDI, F.
700 1 $aQUINTANS, G.
700 1 $aKENYON, P.R.
700 1 $aCORREA, O.
700 1 $aREGUEIRO, M.
700 1 $aÁLVAREZ-OXILEY, A.
700 1 $aBANCHERO, G.
773 $tAnimal, 1 April 2020, Volume 14, Issue 4, Pages 807-813. Doi: https://doi.org/10.1017/S1751731119002441
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INIA La Estanzuela (LE) |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha actual : |
09/04/2021 |
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Actualizado : |
13/04/2021 |
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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 : |
SARAVIA, K.M.; DALL'AGNOL, M.; DA MOTTA, E.A.M.; PEREIRA, E.A.; DE SOUZA, C.H.; SIMINONI, C.; WEILER, R.L.; KOPP, M.M.; SCHNEIDER-CANNY, R.; BARBOSA, M. |
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Afiliación : |
KARLA M. SARAIVA, Departamento de Plantas Forrageiras e Agrometeorologia, Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; MIGUEL DALL'AGNOL, Departamento de Plantas Forrageiras e Agrometeorologia, Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; EDER A.M. DA MOTTA, Departamento de Plantas Forrageiras e Agrometeorologia, Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; EMERSON A. PEREIRA, Universidade Regional do Noroeste do Estado do Rio Grande do Sul, Ijuí, RS, Brazil; CLEBER H. L. DE SOUZA, Departamento de Plantas Forrageiras e Agrometeorologia, Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; CARINE SIMINONI, Departamento de Plantas Forrageiras e Agrometeorologia, Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; ROBERTO L. WEILER, Departamento de Plantas Forrageiras e Agrometeorologia, Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; MAURÍCIO M. KOPP, Embrapa Pecuária Sul, Bagé, RS, Brazil; RAQUEL SCHNEIDER-CANNY, Noble Research Institute, Ardmore, USA; MARLON BARBOSA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Hybrids of Paspalum plicatulum × P. guenoarum: Selection for forage yield and cold tolerance in a subtropical environment. |
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Fecha de publicación : |
2021 |
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Fuente / Imprenta : |
Tropical Grasslands-Forrajes Tropicales, 2021, Vol. 9 (1):138?143. Doi: http://dx.doi.org/10.17138/TGFT(9)138-143 |
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DOI : |
10.17138/TGFT(9)138-143 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received for publication 6 March 2019; accepted 15 December 2020; published 31 January 2021. Acknowledgments: We acknowledge the financial support from SULPASTO, EMBRAPA - Pecuária Sul and CAPES to enable the conduct of this research. We also thank the IBONECONICET, Facultad de Ciencias Agrarias, Universidad Nacional del Nordeste, especially Camilo Luiz Quarín, for the technical assistance in hybridizations. |
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Contenido : |
Selection of improved genotypes is important for pasture-based feeding systems in subtropical regions. Our goal was to identify hybrids of Paspalum with enhanced forage yield and cold tolerance across 2 sites [Bagé and Eldorado do Sul (ES)], in Rio Grande do Sul, Brazil. We evaluated 19 P. plicatulum × P. guenoarum hybrids, P. plicatulum genotype
4PT, P. guenoarum cultivars Azulão and Baio and, as Control, Megathyrsus maximus cv. Aruana. At both sites, the experimental design was a completely randomized block with 4 replications. Total dry mass (total-DM), leaf-DM and cold tolerance (ColdT) were recorded. At Bagé, hybrid 102069 produced higher total-DM and leaf-DM than the
progenitors and cv. Aruana, while at ES, hybrids 102069 and 10308 produced higher total-DM than 4PT, Azulão and Aruana; hybrid 102069 had higher leaf-DM. At Bagé, 16 hybrids displayed ColdT similar to their progenitors and higher than Aruana, while at ES, 12 hybrids showed ColdT similar to Azulão and Baio and higher than 4PT and Aruana. This
study demonstrated that hybrids of Paspalum with superior forage yield to their progenitors and Aruana, and hybrids with higher ColdT than 4PT and Aruana are in existence. The hybridization technique shows potential for producing alternative genotypes with higher forage yield and ColdT for sowing in subtropical regions. |
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Palabras claves : |
ADAPTACIÓN CLIMÁTICA; BIOMASS PRODUCTION; GENETIC VARIABILITY; GRAMÍNEAS NATIVAS; HIBRIDACIÓN; HYBRIDIZATION; NATIE GRASSES; PASTURAS; PRODUCCIÓN DE BIOMASA; VARIABILIDAD. |
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Thesagro : |
FORESTACIÓN. |
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Asunto categoría : |
A50 Investigación agraria |
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Marc : |
LEADER 02959naa a2200385 a 4500
001 1061969
005 2021-04-13
008 2021 bl uuuu u00u1 u #d
024 7 $a10.17138/TGFT(9)138-143$2DOI
100 1 $aSARAVIA, K.M.
245 $aHybrids of Paspalum plicatulum × P. guenoarum$bSelection for forage yield and cold tolerance in a subtropical environment.$h[electronic resource]
260 $c2021
500 $aArticle history: Received for publication 6 March 2019; accepted 15 December 2020; published 31 January 2021. Acknowledgments: We acknowledge the financial support from SULPASTO, EMBRAPA - Pecuária Sul and CAPES to enable the conduct of this research. We also thank the IBONECONICET, Facultad de Ciencias Agrarias, Universidad Nacional del Nordeste, especially Camilo Luiz Quarín, for the technical assistance in hybridizations.
520 $aSelection of improved genotypes is important for pasture-based feeding systems in subtropical regions. Our goal was to identify hybrids of Paspalum with enhanced forage yield and cold tolerance across 2 sites [Bagé and Eldorado do Sul (ES)], in Rio Grande do Sul, Brazil. We evaluated 19 P. plicatulum × P. guenoarum hybrids, P. plicatulum genotype 4PT, P. guenoarum cultivars Azulão and Baio and, as Control, Megathyrsus maximus cv. Aruana. At both sites, the experimental design was a completely randomized block with 4 replications. Total dry mass (total-DM), leaf-DM and cold tolerance (ColdT) were recorded. At Bagé, hybrid 102069 produced higher total-DM and leaf-DM than the progenitors and cv. Aruana, while at ES, hybrids 102069 and 10308 produced higher total-DM than 4PT, Azulão and Aruana; hybrid 102069 had higher leaf-DM. At Bagé, 16 hybrids displayed ColdT similar to their progenitors and higher than Aruana, while at ES, 12 hybrids showed ColdT similar to Azulão and Baio and higher than 4PT and Aruana. This study demonstrated that hybrids of Paspalum with superior forage yield to their progenitors and Aruana, and hybrids with higher ColdT than 4PT and Aruana are in existence. The hybridization technique shows potential for producing alternative genotypes with higher forage yield and ColdT for sowing in subtropical regions.
650 $aFORESTACIÓN
653 $aADAPTACIÓN CLIMÁTICA
653 $aBIOMASS PRODUCTION
653 $aGENETIC VARIABILITY
653 $aGRAMÍNEAS NATIVAS
653 $aHIBRIDACIÓN
653 $aHYBRIDIZATION
653 $aNATIE GRASSES
653 $aPASTURAS
653 $aPRODUCCIÓN DE BIOMASA
653 $aVARIABILIDAD
700 1 $aDALL'AGNOL, M.
700 1 $aDA MOTTA, E.A.M.
700 1 $aPEREIRA, E.A.
700 1 $aDE SOUZA, C.H.
700 1 $aSIMINONI, C.
700 1 $aWEILER, R.L.
700 1 $aKOPP, M.M.
700 1 $aSCHNEIDER-CANNY, R.
700 1 $aBARBOSA, M.
773 $tTropical Grasslands-Forrajes Tropicales, 2021, Vol. 9 (1):138?143. Doi: http://dx.doi.org/10.17138/TGFT(9)138-143
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