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Biblioteca (s) : |
INIA La Estanzuela; INIA Las Brujas. |
Fecha : |
21/02/2014 |
Actualizado : |
22/02/2014 |
Autor : |
García Ferreira, R.; Tommasino, H.; Marzaroli, J.; Gutiérrez, R. |
Título : |
Impacto de estrategias en la sustentabilidad de sistemas familiares lecheros en Uruguay |
Fecha de publicación : |
2011 |
Fuente / Imprenta : |
Pastos y Forrajes, 2011, v.34, no.1, p.109-119 |
ISSN : |
0864-0394 |
Idioma : |
Español |
Thesagro : |
LECHERIA; PRODUCCION FAMILIAR; SUSTENTABILIDAD. |
Asunto categoría : |
-- |
URL : |
http://payfo.ihatuey.cu/Revista/v34n1/body/pyf09111.htm
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Marc : |
LEADER 00558naa a2200193 a 4500 001 1012601 005 2014-02-22 008 2011 bl uuuu u00u1 u #d 022 $a 0864-0394 100 1 $aGARCÍA FERREIRA, R. 245 $aImpacto de estrategias en la sustentabilidad de sistemas familiares lecheros en Uruguay 260 $c2011 650 $aLECHERIA 650 $aPRODUCCION FAMILIAR 650 $aSUSTENTABILIDAD 700 1 $aTOMMASINO, H. 700 1 $aMARZAROLI, J. 700 1 $aGUTIÉRREZ, R. 773 $tPastos y Forrajes, 2011$gv.34, no.1, p.109-119
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Registro original : |
INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
Fecha actual : |
21/02/2014 |
Actualizado : |
18/12/2018 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
A - 1 |
Autor : |
AGUILAR, I.; MISZTAL, I. |
Afiliación : |
IGNACIO AGUILAR GARCIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Animal and Dairy Science Department, University of Georgia, United States.; I. MISZTAL, Animal and Dairy Science Department, University of Georgia, United States. |
Título : |
Technical Note: Recursive Algorithm for Inbreeding Coefficients Assuming Nonzero Inbreeding of Unknown Parents. |
Fecha de publicación : |
2008 |
Fuente / Imprenta : |
Journal of Dairy Science, 2008, 91 (4): 1669-1672. |
ISSN : |
0022-0302 |
DOI : |
10.3168/jds.2007-0575 |
Idioma : |
Inglés |
Notas : |
Article history: Received August 3, 2007. // Accepted December 17, 2007. |
Contenido : |
ABSTRACT.
A recursive algorithm to calculate inbreeding coefficients was modified to account for nonzero inbreeding of unknown parents. The modification was done by changing one part of a recursive formula in which the inbreeding of an animal with at least one unknown parent is not zero and replacing it by the mean inbreeding of all animals born the same year. The algorithm is iterative. Testing involved 17 million US Holsteins. Convergence was reached in 6 rounds. The computing time per round was 4 min, twice as fast as the VanRaden algorithm based on the tabular method. The recursive algorithm is very simple; however, it requires that the recursion takes into account the order of animals. After a simple modification, the algorithm provides a very good approximation of inbreeding when the pedigree is unordered.
© American Dairy Science Association, 2008. |
Palabras claves : |
INBREEDING COEFFICIENT; RECURSIVE ALGORITHM; UNKNOWN PARENT. |
Asunto categoría : |
-- |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/12201/1/Technical-note-recursive-algorithm-for-i.pdf
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Marc : |
LEADER 01544naa a2200205 a 4500 001 1012839 005 2018-12-18 008 2008 bl uuuu u00u1 u #d 022 $a0022-0302 024 7 $a10.3168/jds.2007-0575$2DOI 100 1 $aAGUILAR, I. 245 $aTechnical Note$bRecursive Algorithm for Inbreeding Coefficients Assuming Nonzero Inbreeding of Unknown Parents. 260 $c2008 500 $aArticle history: Received August 3, 2007. // Accepted December 17, 2007. 520 $aABSTRACT. A recursive algorithm to calculate inbreeding coefficients was modified to account for nonzero inbreeding of unknown parents. The modification was done by changing one part of a recursive formula in which the inbreeding of an animal with at least one unknown parent is not zero and replacing it by the mean inbreeding of all animals born the same year. The algorithm is iterative. Testing involved 17 million US Holsteins. Convergence was reached in 6 rounds. The computing time per round was 4 min, twice as fast as the VanRaden algorithm based on the tabular method. The recursive algorithm is very simple; however, it requires that the recursion takes into account the order of animals. After a simple modification, the algorithm provides a very good approximation of inbreeding when the pedigree is unordered. © American Dairy Science Association, 2008. 653 $aINBREEDING COEFFICIENT 653 $aRECURSIVE ALGORITHM 653 $aUNKNOWN PARENT 700 1 $aMISZTAL, I. 773 $tJournal of Dairy Science, 2008, 91 (4): 1669-1672.
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