The Effect Of Sex-Linked Dwarf (Dw), Naked Neck (Na) And Frizzle (F) Genes On Various Traits In Laying Hens Under Tropical Conditions
A study was carried out to investigate the effect of the sex-linked dwarf (dw) , naked neck (Na) and frizzle (l) genes on various quantitative traits in layers and also to identify the appropriate genotypes under tropical conditions . The experimental stock comprised of non-dwarf non-frizzled no...
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| Format: | Thesis |
| Language: | English English |
| Published: |
1991
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/12294/ http://psasir.upm.edu.my/id/eprint/12294/1/FPV_1991_4_A.pdf |
| _version_ | 1848841805256196096 |
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| author | Hj. Idrus, Zulkifli |
| author_facet | Hj. Idrus, Zulkifli |
| author_sort | Hj. Idrus, Zulkifli |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A study was carried out to investigate the effect of the
sex-linked dwarf (dw) , naked neck (Na) and frizzle (l) genes on
various quantitative traits in layers and also to identify the
appropriate genotypes under tropical conditions . The experimental
stock comprised of non-dwarf non-frizzled non-naked neck
or normal (Dw- ff nana) , naked neck (Dw- ff Nana) , frizzled
(Dw- Ff nana) , frizzled naked neck (Dw- Ff Nana) , dwarf
(dw- ff nana) , dwarf naked neck (dw- ff Nana) , dwarf frizzled
(dw- Ff nana) and dwarf f rizzled naked neck (dw- Ff Nana)
genotypes .
The dw was observed to cause a profound reduction in body
weight , body conformation , egg production and egg weight .
However , the dw reduced feed intake and improved feed
efficiency . The dw also had detrimental effect on several egg
quality traits. Body weight and body conformation measurements were not
affected by the Na , while feed intake was significantly
increased in both dwarf and non-dwarf populations . The
Dw- ff Nana hens were observed to have better egg production
and egg weight . Shell quality traits were found to improve due
to the Na . However , among the dwarf population , the Na had an
adverse effect on feed efficiency. |
| first_indexed | 2025-11-15T07:49:04Z |
| format | Thesis |
| id | upm-12294 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:49:04Z |
| publishDate | 1991 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-122942011-09-08T07:44:33Z http://psasir.upm.edu.my/id/eprint/12294/ The Effect Of Sex-Linked Dwarf (Dw), Naked Neck (Na) And Frizzle (F) Genes On Various Traits In Laying Hens Under Tropical Conditions Hj. Idrus, Zulkifli A study was carried out to investigate the effect of the sex-linked dwarf (dw) , naked neck (Na) and frizzle (l) genes on various quantitative traits in layers and also to identify the appropriate genotypes under tropical conditions . The experimental stock comprised of non-dwarf non-frizzled non-naked neck or normal (Dw- ff nana) , naked neck (Dw- ff Nana) , frizzled (Dw- Ff nana) , frizzled naked neck (Dw- Ff Nana) , dwarf (dw- ff nana) , dwarf naked neck (dw- ff Nana) , dwarf frizzled (dw- Ff nana) and dwarf f rizzled naked neck (dw- Ff Nana) genotypes . The dw was observed to cause a profound reduction in body weight , body conformation , egg production and egg weight . However , the dw reduced feed intake and improved feed efficiency . The dw also had detrimental effect on several egg quality traits. Body weight and body conformation measurements were not affected by the Na , while feed intake was significantly increased in both dwarf and non-dwarf populations . The Dw- ff Nana hens were observed to have better egg production and egg weight . Shell quality traits were found to improve due to the Na . However , among the dwarf population , the Na had an adverse effect on feed efficiency. 1991-04 Thesis NonPeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/12294/1/FPV_1991_4_A.pdf Hj. Idrus, Zulkifli (1991) The Effect Of Sex-Linked Dwarf (Dw), Naked Neck (Na) And Frizzle (F) Genes On Various Traits In Laying Hens Under Tropical Conditions. Masters thesis, Universiti Pertanian Malaysia. Poultry breeds Poultry - Breeding English |
| spellingShingle | Poultry breeds Poultry - Breeding Hj. Idrus, Zulkifli The Effect Of Sex-Linked Dwarf (Dw), Naked Neck (Na) And Frizzle (F) Genes On Various Traits In Laying Hens Under Tropical Conditions |
| title | The Effect Of Sex-Linked Dwarf (Dw), Naked Neck (Na) And Frizzle (F) Genes On Various Traits In Laying Hens Under Tropical Conditions
|
| title_full | The Effect Of Sex-Linked Dwarf (Dw), Naked Neck (Na) And Frizzle (F) Genes On Various Traits In Laying Hens Under Tropical Conditions
|
| title_fullStr | The Effect Of Sex-Linked Dwarf (Dw), Naked Neck (Na) And Frizzle (F) Genes On Various Traits In Laying Hens Under Tropical Conditions
|
| title_full_unstemmed | The Effect Of Sex-Linked Dwarf (Dw), Naked Neck (Na) And Frizzle (F) Genes On Various Traits In Laying Hens Under Tropical Conditions
|
| title_short | The Effect Of Sex-Linked Dwarf (Dw), Naked Neck (Na) And Frizzle (F) Genes On Various Traits In Laying Hens Under Tropical Conditions
|
| title_sort | effect of sex-linked dwarf (dw), naked neck (na) and frizzle (f) genes on various traits in laying hens under tropical conditions |
| topic | Poultry breeds Poultry - Breeding |
| url | http://psasir.upm.edu.my/id/eprint/12294/ http://psasir.upm.edu.my/id/eprint/12294/1/FPV_1991_4_A.pdf |