NDLI: Genetic improvement achieved in immune response and some egg production traits using multi-source multi-trait selection indices in laying hens

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Genetic improvement achieved in immune response and some egg production traits using multi-source multi-trait selection indices in laying hens

Content Provider	Semantic Scholar
Author	Nazmi Zhang, Jin-Feng Li, Xiaoyan Swaggerty, Christina L. Kogut, Margot Wang, Yan-Wei Genovese, Katia DiRita, Victor J. Pevzner, I. B. Zhou
Copyright Year	2012
Abstract	Data were collected from 381 birds of Norfa pullets produced by pedigreed mating between 30 sires and 90 dams. These data were utilized to construct and evaluate multisource multitrait selection indices and sub-indices depending on more than one source of information for each trait.The studied traits were antibody titers to SRBCs antigen (Ab), body weight at sexual maturity (BW) and egg number till 42-wk of age. The sources of information considered were individual's own phenotype value (OP), its full (FS) and half sister's (HS) averages. Three subindices (Is) were developed from the main multisource index. It was observed that, weighting factors of all traits in the main multisource index (Ab, BWsm and EN42) had the highest values. The variances of sub-indices (IS,Ab, IS,BWsm and IS,EN42) developed from the main multisource index were 2.576, 5513.06 and 62.35, respectively. Genetic progress achieved was also maximum in most traits. It was concluded that an index based on 3 sources of information was the most efficient index to improve the studied traits and could be applied to improve egg production and immune response traits.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.poultryscience.org/psa12/abstracts/64.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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