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197783

PREDICTON OF PERFORMANCE BASED ON DIFFERENT ECONOMIC TRAITS IN DANDARAWI AND GOLDEN MONTAZAH PULLETS.

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Last updated: 28 Dec 2024

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Abstract

Different prediction equations were established for egg production
(EN90), egg weight (EW90), egg mass (EM90) in the first 90 days of
production, sexual maturity, specific gravity (SG), shell thickness (ST)
and shape index (SI) of egg based on the coefficient values of selected
variables under each. Data from Dandarawi (Dand) and Golden
Montazah (GM) were used. The R-square values of each equation were
calculated. EN90 is a function of either EW90 or EM90 (Dand). EW90 is a
function of each of keel length at 8 weeks of age (KL8,Dand) and KL12
in GM. SG is a function of ST for both breeds. More EN90 can be
predicted through lighter body weight (BW8) and longer shank length
(SL8) at eight weeks of age, however, heavier BW8 and shorter SL8 at
eight weeks of age can be used as predictors for higher EM90 for Dand
pullets. Heavier body weight at sexual maturity (BWSM) and longer
KL12 resulted in retardation of sexual maturation for Dand. The only
significant positive factor resulting in 14.5% of the variability in EW90
was BW12 for GM. Heavier BW8 was associated with decreasing EN90
in Dand. Each of EN90, EW90 and BW8 were significantly increased
EM90 for Dand, whereas SL8 negatively associated with its EM90. For
GM, EN90 and EW90 significantly increased EM90.
In general, equations used for predicting economic traits that had highly
significant R-square indicating that variables associated with each Ytrait were actual and prediction for future economic production will be
reliable .

DOI

10.21608/fjard.2005.197783

Keywords

economic traits, body weight, Egg production, egg quality, Dandarawi, Golden Montazah, chickens

Authors

First Name

Ensaf A.

Last Name

El Full

MiddleName

-

Affiliation

Department of Poultry Production, Fac. of Agric., Cairo Univ., Fayoum Branch.

Email

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City

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Orcid

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First Name

Ali Abd

Last Name

El Azim

MiddleName

-

Affiliation

Department of Poultry Production, Fac. of Agric., Cairo Univ., Fayoum Branch.

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City

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Orcid

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Volume

19

Article Issue

1

Related Issue

27959

Issue Date

2005-01-01

Receive Date

2021-10-03

Publish Date

2005-01-01

Page Start

52

Page End

61

Print ISSN

1110-7790

Online ISSN

2805-2528

Article File

FJARD_Volume 19_Issue 1_Pages 52-61.pdf

PDF . 596.4kB

Link

https://fjard.journals.ekb.eg/article_197783.html

Detail API

https://fjard.journals.ekb.eg/service?article_code=197783

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6

Type

Research articles.

Type Code

1,920

Publication Type

Journal

Publication Title

Fayoum Journal of Agricultural Research and Development

Publication Link

https://fjard.journals.ekb.eg/

MainTitle

PREDICTON OF PERFORMANCE BASED ON DIFFERENT ECONOMIC TRAITS IN DANDARAWI AND GOLDEN MONTAZAH PULLETS.

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Article

Created At

23 Jan 2023