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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
21/02/2014 |
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Actualizado : |
06/11/2019 |
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Autor : |
NEGRIN PEREIRA, V.; LÓPEZ CARRO, B. |
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Afiliación : |
Universidad de la República (Uruguay). Facultad de Agronomía; Universidad de la República (Uruguay). Facultad de Agronomía. |
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Título : |
Efecto del estado fenológico y la variedad de maíz utilizado en pastoreo sobre el valor nutritivo y la producción de leche; tesis: Ing. Agr. |
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Fecha de publicación : |
1987 |
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Fuente / Imprenta : |
Montevideo (Uruguay): Facultad de Agronomía, 1987. |
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Páginas : |
131p. |
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Idioma : |
Español |
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Thesagro : |
ALIMENTACION DE LOS ANIMALES; APLICACION DE ABONOS; ESPACIAMIENTO; FACTORES DE PRODUCCION; FACTORES DE RENDIMIENTO; LECHE; PASTOREO; PRODUCCION LECHERA; VALOR NUTRITIVO; VARIEDADES; ZEA MAYS. |
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Asunto categoría : |
-- |
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Marc : |
LEADER 00796nam a2200253 a 4500
001 1036570
005 2019-11-06
008 1987 bl uuuu m 00u1 u #d
100 1 $aNEGRIN PEREIRA, V.
245 $aEfecto del estado fenológico y la variedad de maíz utilizado en pastoreo sobre el valor nutritivo y la producción de leche; tesis$bIng. Agr.
260 $aMontevideo (Uruguay): Facultad de Agronomía$c1987
300 $a131p.
650 $aALIMENTACION DE LOS ANIMALES
650 $aAPLICACION DE ABONOS
650 $aESPACIAMIENTO
650 $aFACTORES DE PRODUCCION
650 $aFACTORES DE RENDIMIENTO
650 $aLECHE
650 $aPASTOREO
650 $aPRODUCCION LECHERA
650 $aVALOR NUTRITIVO
650 $aVARIEDADES
650 $aZEA MAYS
700 1 $aLÓPEZ CARRO, B.
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Registro original : |
INIA La Estanzuela (LE) |
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 | Acceso al texto completo restringido a Biblioteca INIA Tacuarembó. Por información adicional contacte bibliotb@tb.inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA Tacuarembó. |
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Fecha actual : |
31/01/2020 |
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Actualizado : |
31/01/2020 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Circulación / Nivel : |
Internacional - -- |
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Autor : |
DE MATTOS, D.; BERTAND, J.K.; MISZTAL, I. |
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Afiliación : |
DANIEL DE MATTOS, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; J. K. BERTRAND; I. MISZTAL. |
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Título : |
Investigation of genotype × environment interactions for weaning weight for Herefords in three countries. |
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Fecha de publicación : |
2000 |
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Fuente / Imprenta : |
Journal of Animal Science, August, v. 78, no. 8, p. 2121-2126, 2000. |
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DOI : |
10.2527/2000.7882121x |
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Idioma : |
Inglés |
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Notas : |
Article history: Received September 16, 1999 // Accepted April 3, 2000. |
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Contenido : |
ABSTRACT: The objective of this study was to investigate the possibility of genotype × environment interactions for weaning weight (WWT) between different regions of the United States (US) and between Canada (CA), Uruguay (UY), andUSfor populations of Hereford cattle. Original data were composed of 487,661, 102,986, and 2,322,722 edited weaning weight records from CA, UY, and US, respectively. A total of 359 sires were identified as having progeny across all three countries; 240 of them had at least one progeny with a record in each environment. The data sets within each country were reduced by retaining records from herds with more than 500 WWT records, with an average contemporary group size of greater than nine animals, and that contained WWT records from progeny or maternal grandprogeny of the across-country sires. Data sets within each country were further reduced by randomly selecting among remaining herds. Four regions within US were defined: Upper Plains (UP), Cornbelt (CB), South (S), and Gulf Coast (GC). Similar sampling criteria and common international sires were used to form the within-US regional data sets. A pairwise analysis was done between countries and regions within US (UP-CB vs S-GC, UP vs CB, and S vs GC) for the estimation of (co)variance components and genetic correlation between environments. An accelerated EM-REML algorithm and a multiple-trait animal model that consideredWWTas a different trait in each environment were used to estimate parameters in each pairwise analysis. Direct and maternal (in parentheses) estimated genetic correlations for CA vs UY, CA vs US, US vs UY, UPCB vs S-GC, UP vs CB, and S vs GC were .88 (.84), .86 (.82), .90 (.85), .88 (.87), .88 (.84), and .87 (.85), respectively. The general absence of genotype × country
interactions observed in this study, together with a prior study that showed the similarity of genetic and environmental parameters across the three countries, strongly indicates that a joint WWT genetic evaluation for Hereford cattle could be conducted using a model
that treated the information from CA, UY, and US as a single population using single population-wide genetic parameters. MenosABSTRACT: The objective of this study was to investigate the possibility of genotype × environment interactions for weaning weight (WWT) between different regions of the United States (US) and between Canada (CA), Uruguay (UY), andUSfor populations of Hereford cattle. Original data were composed of 487,661, 102,986, and 2,322,722 edited weaning weight records from CA, UY, and US, respectively. A total of 359 sires were identified as having progeny across all three countries; 240 of them had at least one progeny with a record in each environment. The data sets within each country were reduced by retaining records from herds with more than 500 WWT records, with an average contemporary group size of greater than nine animals, and that contained WWT records from progeny or maternal grandprogeny of the across-country sires. Data sets within each country were further reduced by randomly selecting among remaining herds. Four regions within US were defined: Upper Plains (UP), Cornbelt (CB), South (S), and Gulf Coast (GC). Similar sampling criteria and common international sires were used to form the within-US regional data sets. A pairwise analysis was done between countries and regions within US (UP-CB vs S-GC, UP vs CB, and S vs GC) for the estimation of (co)variance components and genetic correlation between environments. An accelerated EM-REML algorithm and a multiple-trait animal model that consideredWWTas a different trait in each environment were used to estimate parameters i... Presentar Todo |
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Palabras claves : |
BEEF CATTLE; GANADERÍA; GENOTYPE ENVIRONMENT INTERACTION; INTERNATIONAL COMPARISONS. |
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Asunto categoría : |
L01 Ganadería |
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Marc : |
LEADER 02940naa a2200217 a 4500
001 1060731
005 2020-01-31
008 2000 bl uuuu u00u1 u #d
024 7 $a10.2527/2000.7882121x$2DOI
100 1 $aDE MATTOS, D.
245 $aInvestigation of genotype × environment interactions for weaning weight for Herefords in three countries.$h[electronic resource]
260 $c2000
500 $aArticle history: Received September 16, 1999 // Accepted April 3, 2000.
520 $aABSTRACT: The objective of this study was to investigate the possibility of genotype × environment interactions for weaning weight (WWT) between different regions of the United States (US) and between Canada (CA), Uruguay (UY), andUSfor populations of Hereford cattle. Original data were composed of 487,661, 102,986, and 2,322,722 edited weaning weight records from CA, UY, and US, respectively. A total of 359 sires were identified as having progeny across all three countries; 240 of them had at least one progeny with a record in each environment. The data sets within each country were reduced by retaining records from herds with more than 500 WWT records, with an average contemporary group size of greater than nine animals, and that contained WWT records from progeny or maternal grandprogeny of the across-country sires. Data sets within each country were further reduced by randomly selecting among remaining herds. Four regions within US were defined: Upper Plains (UP), Cornbelt (CB), South (S), and Gulf Coast (GC). Similar sampling criteria and common international sires were used to form the within-US regional data sets. A pairwise analysis was done between countries and regions within US (UP-CB vs S-GC, UP vs CB, and S vs GC) for the estimation of (co)variance components and genetic correlation between environments. An accelerated EM-REML algorithm and a multiple-trait animal model that consideredWWTas a different trait in each environment were used to estimate parameters in each pairwise analysis. Direct and maternal (in parentheses) estimated genetic correlations for CA vs UY, CA vs US, US vs UY, UPCB vs S-GC, UP vs CB, and S vs GC were .88 (.84), .86 (.82), .90 (.85), .88 (.87), .88 (.84), and .87 (.85), respectively. The general absence of genotype × country interactions observed in this study, together with a prior study that showed the similarity of genetic and environmental parameters across the three countries, strongly indicates that a joint WWT genetic evaluation for Hereford cattle could be conducted using a model that treated the information from CA, UY, and US as a single population using single population-wide genetic parameters.
653 $aBEEF CATTLE
653 $aGANADERÍA
653 $aGENOTYPE ENVIRONMENT INTERACTION
653 $aINTERNATIONAL COMPARISONS
700 1 $aBERTAND, J.K.
700 1 $aMISZTAL, I.
773 $tJournal of Animal Science, August$gv. 78, no. 8, p. 2121-2126, 2000.
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