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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 : |
22/07/2018 |
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Actualizado : |
12/02/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
ROMAN, L.; SARAVIA, C.; ASTIGARRAGA, L.; BENTANCUR, O.; LA MANNA, A. |
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Afiliación : |
LORENA CAROLINA ROMAN GAY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CELMIRA SARAVIA, Universidad de la República (UdelaR)/ Facultad de Agronomía; LAURA ASTIGARRAGA, Universidad de la República (UdelaR)/ Facultad de Agronomía; OSCAR BENTANCUR, Universidad de la República (UdelaR)/ Facultad de Agronomía; ALEJANDRO FRANCISCO LA MANNA ALONSO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Shade access in combination with sprinkling and ventilation effects performance of Holstein cows in early and late lactation. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Animal Production Science, 2019, Volume 59, Issue 2, Pages 216-224. Doi: https://doi.org/10.1071/AN16571 |
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ISSN : |
1836-0939 |
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DOI : |
10.1071/AN16571 |
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Idioma : |
Inglés |
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Notas : |
Article history: Submitted: 19 August 2016 / Accepted: 15 September 2017 / Published online: 15 December 2017. |
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Contenido : |
Abstract-
The negative effect of heat stress on dairy cows, with a temperature humidity index (THI) over 72, has been extensively studied. However, there are few studies on THI values under 72 that compare the effect of heat stress in different lactation stages. The objective of this study was to determine the heat stress effect on two lactation stages with a THI below the threshold 72. Thirty-nine multiparous, non-pregnant Holstein cows with more than 30 kg/cow.day of solid-corrected milk were used in a randomised complete block design to evaluate six treatments. The experimental design had a 3 by 2 factorial arrangement with three heat stress mitigation strategies: No shade (CON), access to shade only, and access to shade combined with sprinkling and ventilation, and two stages of lactation: early (S1) and late (S2), 12 ± 10.3 and 201 ± 45.8 days in milk respectively, for a duration of 81 consecutive days. All treatments, except CON had access to artificial shade from 0900 hours to 0500 hours next day. From 0500 hours to 0900 hours all cows were managed together in a grazing session. Additionally, sprinkling and ventilation cows had two 30-min sessions of ventilation and spray (0900 hours, 1530 hours). The average THI was 70.1 ± 4.46 (minimum THI: 60.4? maximum THI: 81.7) and the average hours above 72 were 7.8 ± 5.98. Animals in S1 presented higher solids-corrected milk reduction (P < 0.0001? 5.4 and 1.9 kg/cow.day), and protein yield (<0.0001? 0.13 and 0.54 kg/cow.day) than animals in S2 when shade was not allowed (CON). It was concluded that under these conditions, animal productivity is more negatively affected in early lactation animals. The use of shade with or without spray and ventilation mitigates heat stress effects on both stages of lactation.
© CSIRO. MenosAbstract-
The negative effect of heat stress on dairy cows, with a temperature humidity index (THI) over 72, has been extensively studied. However, there are few studies on THI values under 72 that compare the effect of heat stress in different lactation stages. The objective of this study was to determine the heat stress effect on two lactation stages with a THI below the threshold 72. Thirty-nine multiparous, non-pregnant Holstein cows with more than 30 kg/cow.day of solid-corrected milk were used in a randomised complete block design to evaluate six treatments. The experimental design had a 3 by 2 factorial arrangement with three heat stress mitigation strategies: No shade (CON), access to shade only, and access to shade combined with sprinkling and ventilation, and two stages of lactation: early (S1) and late (S2), 12 ± 10.3 and 201 ± 45.8 days in milk respectively, for a duration of 81 consecutive days. All treatments, except CON had access to artificial shade from 0900 hours to 0500 hours next day. From 0500 hours to 0900 hours all cows were managed together in a grazing session. Additionally, sprinkling and ventilation cows had two 30-min sessions of ventilation and spray (0900 hours, 1530 hours). The average THI was 70.1 ± 4.46 (minimum THI: 60.4? maximum THI: 81.7) and the average hours above 72 were 7.8 ± 5.98. Animals in S1 presented higher solids-corrected milk reduction (P < 0.0001? 5.4 and 1.9 kg/cow.day), and protein yield (<0.0001? 0.13 and 0.54 kg/cow.day) t... Presentar Todo |
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Palabras claves : |
DAIRY COW; HEAT STRESS; MILK PRODUCTION; TEMPERATURE. |
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Thesagro : |
GANADO DE LECHE; PRODUCCION DE LECHE. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 02764naa a2200277 a 4500
001 1058831
005 2021-02-12
008 2019 bl uuuu u00u1 u #d
022 $a1836-0939
024 7 $a10.1071/AN16571$2DOI
100 1 $aROMAN, L.
245 $aShade access in combination with sprinkling and ventilation effects performance of Holstein cows in early and late lactation.$h[electronic resource]
260 $c2019
500 $aArticle history: Submitted: 19 August 2016 / Accepted: 15 September 2017 / Published online: 15 December 2017.
520 $aAbstract- The negative effect of heat stress on dairy cows, with a temperature humidity index (THI) over 72, has been extensively studied. However, there are few studies on THI values under 72 that compare the effect of heat stress in different lactation stages. The objective of this study was to determine the heat stress effect on two lactation stages with a THI below the threshold 72. Thirty-nine multiparous, non-pregnant Holstein cows with more than 30 kg/cow.day of solid-corrected milk were used in a randomised complete block design to evaluate six treatments. The experimental design had a 3 by 2 factorial arrangement with three heat stress mitigation strategies: No shade (CON), access to shade only, and access to shade combined with sprinkling and ventilation, and two stages of lactation: early (S1) and late (S2), 12 ± 10.3 and 201 ± 45.8 days in milk respectively, for a duration of 81 consecutive days. All treatments, except CON had access to artificial shade from 0900 hours to 0500 hours next day. From 0500 hours to 0900 hours all cows were managed together in a grazing session. Additionally, sprinkling and ventilation cows had two 30-min sessions of ventilation and spray (0900 hours, 1530 hours). The average THI was 70.1 ± 4.46 (minimum THI: 60.4? maximum THI: 81.7) and the average hours above 72 were 7.8 ± 5.98. Animals in S1 presented higher solids-corrected milk reduction (P < 0.0001? 5.4 and 1.9 kg/cow.day), and protein yield (<0.0001? 0.13 and 0.54 kg/cow.day) than animals in S2 when shade was not allowed (CON). It was concluded that under these conditions, animal productivity is more negatively affected in early lactation animals. The use of shade with or without spray and ventilation mitigates heat stress effects on both stages of lactation. © CSIRO.
650 $aGANADO DE LECHE
650 $aPRODUCCION DE LECHE
653 $aDAIRY COW
653 $aHEAT STRESS
653 $aMILK PRODUCTION
653 $aTEMPERATURE
700 1 $aSARAVIA, C.
700 1 $aASTIGARRAGA, L.
700 1 $aBENTANCUR, O.
700 1 $aLA MANNA, A.
773 $tAnimal Production Science, 2019, Volume 59, Issue 2, Pages 216-224. Doi: https://doi.org/10.1071/AN16571
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Registro original : |
INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
22/02/2014 |
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Autor : |
Germán, S. |
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Título : |
Breeding for durable resistance to wheat leaf rust : an overview |
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Fecha de publicación : |
1997 |
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Fuente / Imprenta : |
ln: South American Oats Congress, 3 : 1997 nov 11-12 : Colonia, Uruguay Rebuffo, M. ; Abadie, T. (eds). [Memorias]. Colonia (Uruguay): INIA ; Quaker, 1997. |
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Páginas : |
p93-104 |
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Idioma : |
Español |
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Thesagro : |
FITOMEJORAMIENTO; PUCCINIA RECONDITA; RELACIONES HUESPED PATOGENO; RESISTENCIA A AGENTES DAÑINOS; TRIGO; URUGUAY. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 00652naa a2200193 a 4500
001 1045276
005 2014-02-22
008 1997 bl uuuu u00u1 u #d
100 1 $aGERMÁN, S.
245 $aBreeding for durable resistance to wheat leaf rust$ban overview
260 $c1997
300 $ap93-104
650 $aFITOMEJORAMIENTO
650 $aPUCCINIA RECONDITA
650 $aRELACIONES HUESPED PATOGENO
650 $aRESISTENCIA A AGENTES DAÑINOS
650 $aTRIGO
650 $aURUGUAY
773 $tln: South American Oats Congress, 3 : 1997 nov 11-12 : Colonia, Uruguay Rebuffo, M. ; Abadie, T. (eds). [Memorias]. Colonia (Uruguay): INIA ; Quaker, 1997.
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