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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
Fecha : |
21/02/2014 |
Actualizado : |
18/06/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
SÁNCHEZ, J.P.; MISZTAL, I.; AGUILAR, I.; ZUMBACH, B.; REKAYA, R. |
Afiliación : |
J. P. SÁNCHEZ, Departamento de Producción animal, Universidad de León, Spain; I. MISZTAL, Animal and Dairy Science Department, University of Georgia, United States; IGNACIO AGUILAR GARCIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; B. ZUMBACH, Norsvin, Norway; R. REKAYA, Animal and Dairy Science Department, University of Georgia, United States. |
Título : |
Genetic determination of the onset of heat stress on daily milk production in the US Holstein cattle. |
Fecha de publicación : |
2009 |
Fuente / Imprenta : |
Journal of Dairy Science, 2009, 92 (8): 4035-4045. OPEN ACCESS. |
ISSN : |
0022-0302 |
DOI : |
10.3168/jds.2008-1626 |
Idioma : |
Inglés |
Notas : |
Article history: Received August 12, 2008. // Accepted March 18, 2009. |
Contenido : |
ABSTRACT.
Existence of individual variation in the onset of heat stress for daily milk yield of dairy cows was assessed. Data included 353,376 test-day records of 38,383 first-parity Holsteins from a random sample of US herds. Three hierarchical models were investigated. Model 1 inferred the value of a temperature-humidity index (THI) at which mean yield began to decline as well as the extent of that decline. Model 2 assumed individual variation in yield decline beyond a common THI threshold. Model 3 additionally assumed individual variation for the onset of heat stress. Deviance information criteria indicated the superiority of model 3 over model 2. For model 2, genetic correlation between milk yield in the absence of heat stress and the THI threshold for heat stress was -0.4 (0.11) [marginal posterior mean (marginal posterior standard deviation)]. For model 3, genetic correlations were -0.53 (0.05) between milk yield and THI threshold and -0.62 (0.08) between milk yield and yield decay beyond the THI threshold. Total standard deviation (sum of additive genetic and permanent envi-ronmental standard deviations) for the THI threshold was 3.95 (0.06), and more than half of that variation had an additive genetic origin [56% (5%)]. Because of the high genetic correlation [0.95 (0.03)] between yield decay and THI threshold with model 3, using only one of them as a selection criterion for heat tolerance would modify the other in the desired direction.
© american Dairy Science association, 2009. MenosABSTRACT.
Existence of individual variation in the onset of heat stress for daily milk yield of dairy cows was assessed. Data included 353,376 test-day records of 38,383 first-parity Holsteins from a random sample of US herds. Three hierarchical models were investigated. Model 1 inferred the value of a temperature-humidity index (THI) at which mean yield began to decline as well as the extent of that decline. Model 2 assumed individual variation in yield decline beyond a common THI threshold. Model 3 additionally assumed individual variation for the onset of heat stress. Deviance information criteria indicated the superiority of model 3 over model 2. For model 2, genetic correlation between milk yield in the absence of heat stress and the THI threshold for heat stress was -0.4 (0.11) [marginal posterior mean (marginal posterior standard deviation)]. For model 3, genetic correlations were -0.53 (0.05) between milk yield and THI threshold and -0.62 (0.08) between milk yield and yield decay beyond the THI threshold. Total standard deviation (sum of additive genetic and permanent envi-ronmental standard deviations) for the THI threshold was 3.95 (0.06), and more than half of that variation had an additive genetic origin [56% (5%)]. Because of the high genetic correlation [0.95 (0.03)] between yield decay and THI threshold with model 3, using only one of them as a selection criterion for heat tolerance would modify the other in the desired direction.
© american Dairy Science ass... Presentar Todo |
Palabras claves : |
GENETIC VARIABILITY; HEAT STRESS; HOLSTEIN; MILK YIELD. |
Thesagro : |
LECHERÍA; VARIABILIDAD GENETICA. |
Asunto categoría : |
-- |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/12194/1/1-s2.0-S0022030209707271-main.pdf
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Marc : |
LEADER 02375naa a2200277 a 4500 001 1012828 005 2019-06-18 008 2009 bl uuuu u00u1 u #d 022 $a0022-0302 024 7 $a10.3168/jds.2008-1626$2DOI 100 1 $aSÁNCHEZ, J.P. 245 $aGenetic determination of the onset of heat stress on daily milk production in the US Holstein cattle.$h[electronic resource] 260 $c2009 500 $aArticle history: Received August 12, 2008. // Accepted March 18, 2009. 520 $aABSTRACT. Existence of individual variation in the onset of heat stress for daily milk yield of dairy cows was assessed. Data included 353,376 test-day records of 38,383 first-parity Holsteins from a random sample of US herds. Three hierarchical models were investigated. Model 1 inferred the value of a temperature-humidity index (THI) at which mean yield began to decline as well as the extent of that decline. Model 2 assumed individual variation in yield decline beyond a common THI threshold. Model 3 additionally assumed individual variation for the onset of heat stress. Deviance information criteria indicated the superiority of model 3 over model 2. For model 2, genetic correlation between milk yield in the absence of heat stress and the THI threshold for heat stress was -0.4 (0.11) [marginal posterior mean (marginal posterior standard deviation)]. For model 3, genetic correlations were -0.53 (0.05) between milk yield and THI threshold and -0.62 (0.08) between milk yield and yield decay beyond the THI threshold. Total standard deviation (sum of additive genetic and permanent envi-ronmental standard deviations) for the THI threshold was 3.95 (0.06), and more than half of that variation had an additive genetic origin [56% (5%)]. Because of the high genetic correlation [0.95 (0.03)] between yield decay and THI threshold with model 3, using only one of them as a selection criterion for heat tolerance would modify the other in the desired direction. © american Dairy Science association, 2009. 650 $aLECHERÍA 650 $aVARIABILIDAD GENETICA 653 $aGENETIC VARIABILITY 653 $aHEAT STRESS 653 $aHOLSTEIN 653 $aMILK YIELD 700 1 $aMISZTAL, I. 700 1 $aAGUILAR, I. 700 1 $aZUMBACH, B. 700 1 $aREKAYA, R. 773 $tJournal of Dairy Science, 2009, 92 (8): 4035-4045. OPEN ACCESS.
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145. | | ZANINE, A.M.; RODRIGUEZ MOTTA, J.P.; FERREIRA, D.J.; DE SOUZA, A.L.; RIBEIRO, M.D.; GERON, L.J.V.; FAJARDO, M.; SPRUNK, M.; PINHO, R.M.A. Milk performance and grazing behaviour of dairy cows in response to pasture allowance. Animal Production Science, 2019, Volume 59, Issue 4, Pages 749-756. Article history: Submitted: 26 July 2017 /Accepted: 15 February 2018 / Published online: 14 May 2018.Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
Biblioteca(s): INIA Las Brujas. |
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148. | | LA MANNA, A. Lechería digital. [Presentación oral]. In: Jornada Técnica Lechera CREA-INALE-INIA: desarrollo de capital humano en los tambos, La Estanzuela, Colonia, (Uruguay): CREA, INIALE, INIA, 2018.Tipo: Presentaciones Orales |
Biblioteca(s): INIA La Estanzuela. |
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151. | | MORALES-PIÑEYRUA, J.; BARAIBAR, N.; BETANCOR, L.; DE TORRES, E.; TORRES DAMIANI, I.; PLA, M.; VIDAL, E.; URIOSTE, V.; NEGRÍN, J.; GÓMEZ, A. Salud de la ubre: acercando la Unidad de Lechería de INIA a técnico/as y productore/as. Producción animal. Revista INIA Uruguay, Marzo 2024, no.76, p.15-17. (Revista INIA; 76).Tipo: Artículos en Revistas Agropecuarias |
Biblioteca(s): INIA Las Brujas. |
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153. | | CAPELESSO, A.; KOZLOSKI, G.; MENDOZA, A.; PLA, M.; REPETTO, J.; CAJARVILLE, C. Reducing milking frequency in early lactation improved the energy status but reduced milk yield during the whole lactation of primiparous Holstein cows consuming a total mixed ration and pasture. Journal of Dairy Science, October 2019, Volume 102, Issue 10, Pages 8919-8930. Article history: Received March 15, 2019. / Accepted June 21, 2019.Tipo: Artículos en Revistas Indexadas Internacionales | Circulación / Nivel : Internacional - -- |
Biblioteca(s): INIA La Estanzuela. |
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157. | | QUINTANS, G.; SCARSI, A.; VELAZCO, J.I.; BANCHERO, G. Different forage allowances in the pre- and postpartum period and the production of beef cows: session 58; theatre 9. In: Annual Meeting of the European Federation of Animal Science (EAAP), 64., 2013, Nantes, FR. Book of abstracts... Wageningen, NL: WAP, 2013. p. 629. Resumen de presentación oral.Tipo: Trabajos en Congresos/Conferencias |
Biblioteca(s): INIA La Estanzuela; INIA Treinta y Tres. |
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Registros recuperados : 247 | |
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