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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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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 : |
19/05/2016 |
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Actualizado : |
10/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
A - B |
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Autor : |
SINCLAIR, K.D.; YULDIZ, S.; QUINTANS, G.; GEBBIE, F.E.; BROADBENT, P.J. |
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Afiliación : |
Scottish Agricultural College, Aberdeen.; Scottish Agricultural College, Aberdeen; GRACIELA QUINTANS ILARIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. Stottish Agricultural College, Aberdeen.; Scottish Agricultural College, Aberdeen.; Scottish Agricultural College, Aberdeen. |
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Título : |
Annual energy intake and the metabolic and reproductive performance of beef cows differing in body size and milk potential. |
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Fecha de publicación : |
1998 |
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Fuente / Imprenta : |
Animal Science, 1998, v. 66, p. 657-666. |
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DOI : |
10.1017/S135772980000922X |
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Idioma : |
Inglés |
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Contenido : |
The metabolic status and reproductive performance of four pure breeds of beef cow (small size and low milk potential, Aberdeen Angus; small size and high milk potential, Welsh Black; large size and low milk potential, Charolais; and large size and high milk potential, Simmental) were monitored during their first two parities. Heifers from each breed were allocated to one of two levels of annual energy intake relative to metabolic body weight (M075) (mean daily intakes equivalent to 705 and 820 kj/kg M0·75) in a factorial design. In the 1st year 64 heifers (eight per treatment) which had calved as a consequence of first or second service were selected for the experiment. In the 2nd year 40 of these animals (five per treatment) which held to first or second service remained on experiment. Animals were housed all year round and given diets designed to represent energy intakes while grazing during the summer and conserved feeding during the winter. Pregnancy was established in late July of each year using a combination of oestrous synchronization and artificial insemination. Blood samples were collected at monthly intervals from weaning in November until calving in May; three times weekly from calving until oestrous synchronization (11 weeks later); and fortnightly thereafter until weaning.
For the annual levels of dietary energy intake offered, two breeds (Welsh Black and Charolais) exhibited relatively high growth rates and had the longest post-partum anovulatory periods; and Charolais cows also had the poorest conception rates of all breeds. Relatively lean cows at calving (body condition score < 2·5 units) were sensitive, in terms of the duration of the anovulatory period, to live-weight loss during the early post-partum period, particularly when blood glucose levels were low, whereas relatively fat cows at calving (body condition score > 2·5 units) were not. The data suggest: (i) that mechanisms controlling the anabolic processes governing maternal growth are antagonistic towards those that control reproduction; and (ii) the catabolism of lean tissue rather than fat tissue during the early post-partum period is also antagonistic towards the mechanisms that govern reproductive function in cows. MenosThe metabolic status and reproductive performance of four pure breeds of beef cow (small size and low milk potential, Aberdeen Angus; small size and high milk potential, Welsh Black; large size and low milk potential, Charolais; and large size and high milk potential, Simmental) were monitored during their first two parities. Heifers from each breed were allocated to one of two levels of annual energy intake relative to metabolic body weight (M075) (mean daily intakes equivalent to 705 and 820 kj/kg M0·75) in a factorial design. In the 1st year 64 heifers (eight per treatment) which had calved as a consequence of first or second service were selected for the experiment. In the 2nd year 40 of these animals (five per treatment) which held to first or second service remained on experiment. Animals were housed all year round and given diets designed to represent energy intakes while grazing during the summer and conserved feeding during the winter. Pregnancy was established in late July of each year using a combination of oestrous synchronization and artificial insemination. Blood samples were collected at monthly intervals from weaning in November until calving in May; three times weekly from calving until oestrous synchronization (11 weeks later); and fortnightly thereafter until weaning.
For the annual levels of dietary energy intake offered, two breeds (Welsh Black and Charolais) exhibited relatively high growth rates and had the longest post-partum anovulatory periods; and... Presentar Todo |
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Palabras claves : |
BEEF COWS; ENERGY INTAKE; GENOTYPES; METABOLITES; REPRODUCTION. |
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Thesagro : |
BOVINOS DE CARNE; CONSUMO DE ENERGIA; GENOTIPOS; METABOLITOS; REPRODUCCION ANIMAL. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 03109naa a2200301 a 4500
001 1054828
005 2019-10-10
008 1998 bl uuuu u00u1 u #d
024 7 $a10.1017/S135772980000922X$2DOI
100 1 $aSINCLAIR, K.D.
245 $aAnnual energy intake and the metabolic and reproductive performance of beef cows differing in body size and milk potential.$h[electronic resource]
260 $c1998
520 $aThe metabolic status and reproductive performance of four pure breeds of beef cow (small size and low milk potential, Aberdeen Angus; small size and high milk potential, Welsh Black; large size and low milk potential, Charolais; and large size and high milk potential, Simmental) were monitored during their first two parities. Heifers from each breed were allocated to one of two levels of annual energy intake relative to metabolic body weight (M075) (mean daily intakes equivalent to 705 and 820 kj/kg M0·75) in a factorial design. In the 1st year 64 heifers (eight per treatment) which had calved as a consequence of first or second service were selected for the experiment. In the 2nd year 40 of these animals (five per treatment) which held to first or second service remained on experiment. Animals were housed all year round and given diets designed to represent energy intakes while grazing during the summer and conserved feeding during the winter. Pregnancy was established in late July of each year using a combination of oestrous synchronization and artificial insemination. Blood samples were collected at monthly intervals from weaning in November until calving in May; three times weekly from calving until oestrous synchronization (11 weeks later); and fortnightly thereafter until weaning. For the annual levels of dietary energy intake offered, two breeds (Welsh Black and Charolais) exhibited relatively high growth rates and had the longest post-partum anovulatory periods; and Charolais cows also had the poorest conception rates of all breeds. Relatively lean cows at calving (body condition score < 2·5 units) were sensitive, in terms of the duration of the anovulatory period, to live-weight loss during the early post-partum period, particularly when blood glucose levels were low, whereas relatively fat cows at calving (body condition score > 2·5 units) were not. The data suggest: (i) that mechanisms controlling the anabolic processes governing maternal growth are antagonistic towards those that control reproduction; and (ii) the catabolism of lean tissue rather than fat tissue during the early post-partum period is also antagonistic towards the mechanisms that govern reproductive function in cows.
650 $aBOVINOS DE CARNE
650 $aCONSUMO DE ENERGIA
650 $aGENOTIPOS
650 $aMETABOLITOS
650 $aREPRODUCCION ANIMAL
653 $aBEEF COWS
653 $aENERGY INTAKE
653 $aGENOTYPES
653 $aMETABOLITES
653 $aREPRODUCTION
700 1 $aYULDIZ, S.
700 1 $aQUINTANS, G.
700 1 $aGEBBIE, F.E.
700 1 $aBROADBENT, P.J.
773 $tAnimal Science, 1998$gv. 66, p. 657-666.
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