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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; INIA Treinta y Tres. |
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Fecha : |
10/01/2023 |
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Actualizado : |
23/01/2023 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
PONTES-PRATES, A.; CARVALHO, P. C. DE F.; BOLZAN, A. M. S.; SAVIAN, J.V.; SILVA NETO, G. F.; SÁNCHEZ ZUBIETA, A.; LACA, E. A. |
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Afiliación : |
ARTHUR PONTES-PRATES, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, RS 91540-000, Brazi; Department of Plant Sciences, University of California, Davis, CA 95616, USA.; PAULO CÉSAR DE FACCIO CARVALHO, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, RS 91540-000, Brazil.; ANDERSON MICHEL SOARES BOLZAN, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, RS 91540-000, Brazil.; JEAN VICTOR SAVIAN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GENTIL FÉLIX DA SILVA NETO, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, RS 91540-000, Brazil.; ÁNGEL SÁNCHEZ ZUBIETA, Grazing Ecology Research Group, Federal University of Rio Grande do Sul, Porto Alegre, RS 91540-000, Brazil.; EMILIO ANDRÉS LACA, Department of Plant Sciences, University of California, Davis, CA 95616, USA. |
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Título : |
Similar grazing mechanisms explain contrasting intake and sward-height dynamics under different grazing management. |
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Fecha de publicación : |
2022 |
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Fuente / Imprenta : |
Animal Production Science, 2022. doi: https://doi.org/10.1071/AN22011 |
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ISSN : |
1836-5787 |
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DOI : |
10.1071/AN22011 |
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Idioma : |
Inglés |
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Notas : |
Article history: Submitted 8 January 2022; Accepted 4 October 2022; Published online 18 November 2022. -- Corresponding author: Arthur Pontes-Prates, pontesprates@ucdavis.edu -- Handling Editor: Pablo Gregorini -- Supplementary material. |
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Contenido : |
Context: Average sward height has traditionally been used as a grazing management variable. However, such approach ignores the spatio-temporal heterogeneity of swards. Because the intake rate responds non-linearly to average height at plant level, we expected that sheep exposed to contrasting grazing methods with similar average heights would behave differently. Conclusions: Intake responses of sheep differed between grazing methods with similar average height due to sward heterogeneity over time and space. Grazing mechanisms were not directly affected by the treatments but were influenced by the sward heterogeneity imposed by the grazing management. Implications: Grazing management requires not only consideration of the average sward height, but also an understanding of how the resource is distributed in time and space. © 2022 The Author(s) (or their employer(s)). Published by CSIRO Publishing |
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Palabras claves : |
Foraging behavior; Grazing mechanisms; Herbage intake; Heterogeneous swards; Large herbivores; Patch depression; Spatial–temporal heterogeneity; Sward depletion. |
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Asunto categoría : |
L02 Alimentación animal |
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Marc : |
LEADER 02143naa a2200325 a 4500
001 1063940
005 2023-01-23
008 2022 bl uuuu u00u1 u #d
022 $a1836-5787
024 7 $a10.1071/AN22011$2DOI
100 1 $aPONTES-PRATES, A.
245 $aSimilar grazing mechanisms explain contrasting intake and sward-height dynamics under different grazing management.$h[electronic resource]
260 $c2022
500 $aArticle history: Submitted 8 January 2022; Accepted 4 October 2022; Published online 18 November 2022. -- Corresponding author: Arthur Pontes-Prates, pontesprates@ucdavis.edu -- Handling Editor: Pablo Gregorini -- Supplementary material.
520 $aContext: Average sward height has traditionally been used as a grazing management variable. However, such approach ignores the spatio-temporal heterogeneity of swards. Because the intake rate responds non-linearly to average height at plant level, we expected that sheep exposed to contrasting grazing methods with similar average heights would behave differently. Conclusions: Intake responses of sheep differed between grazing methods with similar average height due to sward heterogeneity over time and space. Grazing mechanisms were not directly affected by the treatments but were influenced by the sward heterogeneity imposed by the grazing management. Implications: Grazing management requires not only consideration of the average sward height, but also an understanding of how the resource is distributed in time and space. © 2022 The Author(s) (or their employer(s)). Published by CSIRO Publishing
653 $aForaging behavior
653 $aGrazing mechanisms
653 $aHerbage intake
653 $aHeterogeneous swards
653 $aLarge herbivores
653 $aPatch depression
653 $aSpatial–temporal heterogeneity
653 $aSward depletion
700 1 $aCARVALHO, P. C. DE F.
700 1 $aBOLZAN, A. M. S.
700 1 $aSAVIAN, J.V.
700 1 $aSILVA NETO, G. F.
700 1 $aSÁNCHEZ ZUBIETA, A.
700 1 $aLACA, E. A.
773 $tAnimal Production Science, 2022. doi: https://doi.org/10.1071/AN22011
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Registro original : |
INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
11/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
B - 1 |
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Autor : |
DUTRA, F.; QUINTANS, G.; BANCHERO, G. |
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Afiliación : |
GRACIELA QUINTANS ILARIA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; GEORGGET ELIZABETH BANCHERO HUNZIKER, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
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Título : |
Lesions in the central nervous system associated with perinatal lamb mortality. |
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Fecha de publicación : |
2007 |
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Fuente / Imprenta : |
Australian Veterinary Journal, 2007, v.85, p.405-413. |
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DOI : |
10.1111/j.1751-0813.2007.00205.x |
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Idioma : |
Inglés |
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Notas : |
Article history: Accepted for publication 31 July 2007.DOI: https://doi.org/10.1111/j.1751-0813.2007.00205.x |
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Contenido : |
Objective: To identify and describe the occurrence of neurological lesions that could have an effect on lamb mortality.
Procedure?:The central nervous system was investigated macroscopically (n = 92) and microscopically (n = 72) in lambs dying in the perinatal period during 3 years in flocks of adult Corriedale ewes. The central nervous system was removed intact and samples of cerebral cortex, basal ganglia, thalamus, hippocampus, mesencephalon, cerebellar cortex, medulla oblongata, and cervical spinal cord were scored microscopically for the severity of neuronal dead, cytotoxic and perivascular oedema, and haemorrhage.
Results: Neurologic findings between birth and 6 days included haemorrhages in meninges, brain congestion and oedema, neuronal ischemic necrosis, intraparenchymal haemorrhages in medulla oblongata and cervical spinal cord, parasagittal cerebral necrosis, and periventricular leukomalacia. No significant lesions were found in anteparturient deaths or in those aged between 7 and 16 days. Oedema was more severe in the brain than in other regions of the central nervous system. Ischaemic neurons first appeared 24 hours post partum, increased linearly in number between 48 hours and 5 days post partum, and had a laminar distribution in the cerebral cortex, indicating a hypoxic?ischemic encephalopathy. Haemorrhages were most severe in the gray matter of medulla oblongata and cervical spinal cord, suggesting trauma due to instability of atlantoaxialis joint.
Conclusion: Lesions in the central nervous system can explain most deaths at birth and within 6 days of birth. The lesions were hypoxic-ischemic and appeared to be related to birth injury. MenosObjective: To identify and describe the occurrence of neurological lesions that could have an effect on lamb mortality.
Procedure?:The central nervous system was investigated macroscopically (n = 92) and microscopically (n = 72) in lambs dying in the perinatal period during 3 years in flocks of adult Corriedale ewes. The central nervous system was removed intact and samples of cerebral cortex, basal ganglia, thalamus, hippocampus, mesencephalon, cerebellar cortex, medulla oblongata, and cervical spinal cord were scored microscopically for the severity of neuronal dead, cytotoxic and perivascular oedema, and haemorrhage.
Results: Neurologic findings between birth and 6 days included haemorrhages in meninges, brain congestion and oedema, neuronal ischemic necrosis, intraparenchymal haemorrhages in medulla oblongata and cervical spinal cord, parasagittal cerebral necrosis, and periventricular leukomalacia. No significant lesions were found in anteparturient deaths or in those aged between 7 and 16 days. Oedema was more severe in the brain than in other regions of the central nervous system. Ischaemic neurons first appeared 24 hours post partum, increased linearly in number between 48 hours and 5 days post partum, and had a laminar distribution in the cerebral cortex, indicating a hypoxic?ischemic encephalopathy. Haemorrhages were most severe in the gray matter of medulla oblongata and cervical spinal cord, suggesting trauma due to instability of atlantoaxialis joint.
Conclusion... Presentar Todo |
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Thesagro : |
MORTALIDAD; OVINOS; PRODUCCION ANIMAL; SISTEMA NERVIOSO. |
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Asunto categoría : |
L52 Fisiología Animal- Crecimiento y desarrollo |
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Marc : |
LEADER 02406naa a2200217 a 4500
001 1032975
005 2019-10-11
008 2007 bl uuuu u00u1 u #d
024 7 $a10.1111/j.1751-0813.2007.00205.x$2DOI
100 1 $aDUTRA, F.
245 $aLesions in the central nervous system associated with perinatal lamb mortality.$h[electronic resource]
260 $c2007
500 $aArticle history: Accepted for publication 31 July 2007.DOI: https://doi.org/10.1111/j.1751-0813.2007.00205.x
520 $aObjective: To identify and describe the occurrence of neurological lesions that could have an effect on lamb mortality. Procedure?:The central nervous system was investigated macroscopically (n = 92) and microscopically (n = 72) in lambs dying in the perinatal period during 3 years in flocks of adult Corriedale ewes. The central nervous system was removed intact and samples of cerebral cortex, basal ganglia, thalamus, hippocampus, mesencephalon, cerebellar cortex, medulla oblongata, and cervical spinal cord were scored microscopically for the severity of neuronal dead, cytotoxic and perivascular oedema, and haemorrhage. Results: Neurologic findings between birth and 6 days included haemorrhages in meninges, brain congestion and oedema, neuronal ischemic necrosis, intraparenchymal haemorrhages in medulla oblongata and cervical spinal cord, parasagittal cerebral necrosis, and periventricular leukomalacia. No significant lesions were found in anteparturient deaths or in those aged between 7 and 16 days. Oedema was more severe in the brain than in other regions of the central nervous system. Ischaemic neurons first appeared 24 hours post partum, increased linearly in number between 48 hours and 5 days post partum, and had a laminar distribution in the cerebral cortex, indicating a hypoxic?ischemic encephalopathy. Haemorrhages were most severe in the gray matter of medulla oblongata and cervical spinal cord, suggesting trauma due to instability of atlantoaxialis joint. Conclusion: Lesions in the central nervous system can explain most deaths at birth and within 6 days of birth. The lesions were hypoxic-ischemic and appeared to be related to birth injury.
650 $aMORTALIDAD
650 $aOVINOS
650 $aPRODUCCION ANIMAL
650 $aSISTEMA NERVIOSO
700 1 $aQUINTANS, G.
700 1 $aBANCHERO, G.
773 $tAustralian Veterinary Journal, 2007$gv.85, p.405-413.
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