Combining Ability Estimates for Egg Production Traits from Line X Tester Analysis

Dr. R.Sh

Combining Ability Estimates for Egg Production Traits from Line X Tester Analysis

Dr. Reda Abou El-Ghar * § Ph.D.

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§ Animal Production Research Institute, ARC, Ministry ...

Combining Ability Estimates for Egg Production Traits from Line X Tester Analysis

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Abstract

The present investigation was undertaken to study the combining ability for egg production traits using the line x tester mating design. Four local male lines (Baheij, Bj; Matrouh, Mt; Silver Montazah, SM and Golden Montazah, GM) and two commercial female testers (Lohman Brown, LB and Lohman Selected Leghorn, LSL) were used in this study. Combining ability estimates are important genetic attributes to chicken breeders in predicting improvement via hybridization and selection programs. The magnitude of specific combining ability (SCA) variance was evident from mean squares, indicating that egg production traits had been controlled by non-additive genes. However, among the four male lines, Silver Montazah (SM) showed maximum general combining ability (GCA) effects for number of eggs at 90 d., of laying (EN1), number of eggs at 180 d., of laying (EN2), number of eggs at 240 d., of laying (EN3), number of eggs till 52 wks., of laying (EN4), average egg weight at 52 wks., of laying (EW4) and egg mass throughout 52 wks., of laying (EM) studied traits. The second high GCA scoring parent for EN1, EN2, EN3, EN4, EW4 and EM was GM parental line.

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27 Cites in Article

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Funding

No external funding was declared for this work.

Conflict of Interest

The authors declare no conflict of interest.

Ethical Approval

No ethics committee approval was required for this article type.

Data Availability

Not applicable for this article.

How to Cite This Article

Dr. Dr. R.Sh. 2012. "Combining Ability Estimates for Egg Production Traits from Line X Tester Analysis". Global Journal of Science Frontier Research - G: Bio-Tech & Genetics GJSFR-G Volume 12 (GJSFR Volume 12 Issue G5).

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GJSFR Volume 12 Issue G5

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Journal Specifications

Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

Keywords

combining ability estimates line x tester analysis local strains of chicken

Classification

GJSFR-G Classification FOR Code: 060499

Submission ReceivedAugust 18, 2012
Peer Review Double Blind
Handling Editor
Accepted September 11, 2012
Published October 2, 2012

Version of record

v1.2

Issue date

October 2, 2012

Language

English

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Article Matrices

Total Score: 110

Country: Egypt

Subject: Global Journal of Science Frontier Research - G: Bio-Tech & Genetics

Authors: Dr. R.Sh, Abou El-Ghar, O.M. Aly, Hanan H. Ghanem, Hedaia M. Shalan (PhD/Dr. count: 1)

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Publish Date: 2012 09, Tue

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