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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha : |
08/09/2014 |
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Actualizado : |
15/10/2019 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
ROVIRA, P.J.; VELAZCO, J.I. |
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Afiliación : |
PABLO JUAN ROVIRA SANZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JOSÉ IGNACIO VELAZCO DE LOS REYES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
The effect of free or restricted access to artificial shade on respiration rate, behaviour and performance of grazing steers. |
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Fecha de publicación : |
2011 |
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Fuente / Imprenta : |
Online Journal of Animal and Feed Research, 2011, v. 1, no. 6, p. 293-298. |
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ISSN : |
2228-7701 |
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Idioma : |
Inglés |
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Contenido : |
The effect of access to artificial shade on respiration rate, performance and behaviour of grazing steers was determined during summer. Forty-two yearling steers were randomly assigned to 3 treatments without replication: (1) no shade, (2) free access to shade, and (3) restricted access to shade. Animals with restricted shade were daily removed from the grazing paddocks and enclosured in a resting area with shade and water between 10.00 and 16.00 h while animals of group 2 had both shade and water available ad-libitum in the grazing area. The respiration rate of control steers (69 breaths/min) was significantly higher than that of shade steers without differences between free and restricted access to shade (58 and 56 breaths/min, respectively). Total grazing time during daylight hours was not affected by shade availability (515 min). Between shaded treatments, animals with restricted access to shade spent significantly (P<0.05) more time grazing during the morning than animals with free access to shade to compensate the lack of grazing between 10.00 and 16.00 h (241 and 168 min, respectively). The amount of time steers with free access to shade spent in the shade structure was strongly related to air temperature (R2=0.85). When air temperature averaged 23.1°C between 06.00 and 20.30 h steers spent on average 50 min in shade; while when temperature averaged 29.6°C steers spent 422 min in shade. No significant difference was found in overall average daily gain among treatments (538 g/a/day). The provision of shade either ad-libitum or restricted reduced respiration rate of steers without affecting diurnal grazing time and animal performance. MenosThe effect of access to artificial shade on respiration rate, performance and behaviour of grazing steers was determined during summer. Forty-two yearling steers were randomly assigned to 3 treatments without replication: (1) no shade, (2) free access to shade, and (3) restricted access to shade. Animals with restricted shade were daily removed from the grazing paddocks and enclosured in a resting area with shade and water between 10.00 and 16.00 h while animals of group 2 had both shade and water available ad-libitum in the grazing area. The respiration rate of control steers (69 breaths/min) was significantly higher than that of shade steers without differences between free and restricted access to shade (58 and 56 breaths/min, respectively). Total grazing time during daylight hours was not affected by shade availability (515 min). Between shaded treatments, animals with restricted access to shade spent significantly (P<0.05) more time grazing during the morning than animals with free access to shade to compensate the lack of grazing between 10.00 and 16.00 h (241 and 168 min, respectively). The amount of time steers with free access to shade spent in the shade structure was strongly related to air temperature (R2=0.85). When air temperature averaged 23.1°C between 06.00 and 20.30 h steers spent on average 50 min in shade; while when temperature averaged 29.6°C steers spent 422 min in shade. No significant difference was found in overall average daily gain among treatments... Presentar Todo |
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Palabras claves : |
BEHAVIOUR; CATTLE; RESPIRATION RATE; SHADE. |
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Thesagro : |
BIENESTAR ANIMAL; BOVINOS; ESTRES CALORICO; SOMBRA ARTIFICIAL. |
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Asunto categoría : |
L20 Ecología animal |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/3031/1/OJAFR-A50-293-298-2011.pdf
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Marc : |
LEADER 02397naa a2200241 a 4500
001 1050033
005 2019-10-15
008 2011 bl uuuu u00u1 u #d
022 $a2228-7701
100 1 $aROVIRA, P.J.
245 $aThe effect of free or restricted access to artificial shade on respiration rate, behaviour and performance of grazing steers.$h[electronic resource]
260 $c2011
520 $aThe effect of access to artificial shade on respiration rate, performance and behaviour of grazing steers was determined during summer. Forty-two yearling steers were randomly assigned to 3 treatments without replication: (1) no shade, (2) free access to shade, and (3) restricted access to shade. Animals with restricted shade were daily removed from the grazing paddocks and enclosured in a resting area with shade and water between 10.00 and 16.00 h while animals of group 2 had both shade and water available ad-libitum in the grazing area. The respiration rate of control steers (69 breaths/min) was significantly higher than that of shade steers without differences between free and restricted access to shade (58 and 56 breaths/min, respectively). Total grazing time during daylight hours was not affected by shade availability (515 min). Between shaded treatments, animals with restricted access to shade spent significantly (P<0.05) more time grazing during the morning than animals with free access to shade to compensate the lack of grazing between 10.00 and 16.00 h (241 and 168 min, respectively). The amount of time steers with free access to shade spent in the shade structure was strongly related to air temperature (R2=0.85). When air temperature averaged 23.1°C between 06.00 and 20.30 h steers spent on average 50 min in shade; while when temperature averaged 29.6°C steers spent 422 min in shade. No significant difference was found in overall average daily gain among treatments (538 g/a/day). The provision of shade either ad-libitum or restricted reduced respiration rate of steers without affecting diurnal grazing time and animal performance.
650 $aBIENESTAR ANIMAL
650 $aBOVINOS
650 $aESTRES CALORICO
650 $aSOMBRA ARTIFICIAL
653 $aBEHAVIOUR
653 $aCATTLE
653 $aRESPIRATION RATE
653 $aSHADE
700 1 $aVELAZCO, J.I.
773 $tOnline Journal of Animal and Feed Research, 2011$gv. 1, no. 6, p. 293-298.
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INIA Treinta y Tres (TT) |
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| 3. |  | CARRIQUIRY, R.; FRADE, S.; JAURENA, M.; URIARTE, G.; ARMAND UGON, P.; GONZÁLEZ, I.; FALCON, A. Caracterización de la nutrición mineral en establecimientos ganaderos. [Resumen]. In: CONGRESO ASOCIACIÓN URUGUAYA DE PRODUCCIÓN ANIMAL (6º, Marzo, 2018, Tacuarembó, Uruguay). Resúmenes. Tacuarembó: AUPA, 2018. p. 80| Tipo: Abstracts/Resúmenes |
| Biblioteca(s): INIA Tacuarembó. |
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| Registros recuperados : 3 | |
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