Fecha/hora: 16/06/2024 04:14:14

Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 21/02/2014
Fecha de la última actualización: | 18/12/2018
Autoria: | 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.
Año 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-Clave: | INBREEDING COEFFICIENT; RECURSIVE ALGORITHM; UNKNOWN PARENT.
Categoría del tema: | --
URL: | http://www.ainfo.inia.uy/digital/bitstream/item/12201/1/Technical-note-recursive-algorithm-for-i.pdf
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (12839-1) - PXI - AP - PP - PP/JR. DAIRY SCIENCE/2008 -  -  - DIS