Genotype-Environment (G X E) Interaction for Body Weights for Kuchi Chicken Ecotype of Tanzania Reared Under Intensive and Extensive Management

Dr. J. Lwelamira

Genotype-Environment (G X E) Interaction for Body Weights for Kuchi Chicken Ecotype of Tanzania Reared Under Intensive and Extensive Management

Dr. J. Lwelamira * §

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§ Institute of Rural Development Planning, Dodoma, Tan...

Genotype-Environment (G X E) Interaction for Body Weights for Kuchi Chicken Ecotype of Tanzania Reared Under Intensive and Extensive Management

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Abstract

This study was carried out with the aim of determining magnitude of G x E interaction for body weights for Kuchi chicken ecotype of Tanzania reared under intensive (on-station) and extensive (freerange) management systems. Body weight was assessed at 8 (Bwt8), 12(Bwt12), 16(Bwt16), and 20(Bwt20) weeks of age. Results for this study indicated average performance in all body weight measurements was significantly higher under intensive management compared to extensive management (P< 0.001), signifying two diverse environment and hence possibility for G x E interaction. Based on magnitude of genetic correlation for the same trait measured in two environments ( rg ) G x E interaction for all body weight measurements were found to be substantial (i.e. biologically important). Value for rg was 0.745, 0.757, 0.752 and 0.753 for Bwt8, Bwt12, Bwt16 and Bwt20, respectively. Since breeding program for improving performance of the ecotype would be more feasible under intensive management and hence more likely to take place under such environment, based on results of this study, if such breeding program is to be implemented, sensitization of smallholder farmers (beneficiaries of the breeding program) to shift from their current system of management (extensive management) to at least semiintensive system of management is recommended for minimizing the effect of G x E interaction.

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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. Lwelamira. 1970. "Genotype-Environment (G X E) Interaction for Body Weights for Kuchi Chicken Ecotype of Tanzania Reared Under Intensive and Extensive Management". Global Journal of Medical Research GJMR Volume 12 (GJMR Volume 12 Issue 5).

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GJMR Volume 12 Issue 5

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Journal Specifications

Crossref Journal DOI 10.17406/gjmr

Print ISSN 0975-5888

e-ISSN 2249-4618

Keywords

Breed environment local chickens Performance

Classification

GJSFR-D Classification FOR Code: 070203

070202

070204

Submission ReceivedFebruary 10, 2012
Peer Review Double Blind
Handling Editor
Accepted March 2, 2012
Published March 15, 2012

Version of record

v1.2

Issue date

July 2, 2012

Language

English

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Total Score: 146

Country: Tanzania

Subject: Global Journal of Medical Research

Authors: Dr. J. Lwelamira (PhD/Dr. count: 1)

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Publish Date: 2012 03, Thu

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