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54259

GENETIC ASPECTS IN SOME GROWTH AND MEASUREMENTS TRAITS IN BALADI BLACK RABBITS

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Last updated: 04 Jan 2025

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Abstract

A total of 109 progeny of 8 sires and 19 dams from a Baladi Black random breed population were used to estimate the heritability and genetic correlations of juvenile growth traits. The traits were individual body weight (BW), body length (BL), chest circumference (CC) and thigh circumference (TC) at 6, 8, 10 and 12 weeks of age. Multi-Trait Derivative-Free Restricted Maximum Likelihood Animal Model (DFREML) was used to estimate the genetic variance components, permanent environmental variation and transmitting ability (BLUP) estimates. Additive genetic variance of body weight traits ranged from 16.7% at 6 weeks to 44.0% at 10 weeks. The heritability estimates ranged from 0.18 to 0.42 for body weights, from 0.25 to 0.63 for body lengths, from 0.23 to 0.62 for chest circumferences and from 0.02 to 0.45 for thigh circumferences. High positive genetic correlation estimates were obtained between most of the traits. The ranges of top 25% of the animals using BW and BL data seemed to increase with age. For CC and TC traits, inconsistent trends were revealed for the top 25% of all data Conclusively, the results revealed moderate to high heritability estimates and positive BLUP estimates for growth traits with a sire replacement rate of 20-25%, and this indicates that selection for growth can be successfully practiced in Baladi Black rabbits.

DOI

10.21608/ejrs.2013.54259

Keywords

Rabbits, Growth, variance components, heritability and BLUP estimates

Authors

First Name

Faten

Last Name

El-Badawy

MiddleName

-

Affiliation

Animal Production Research Institute, Agricultural Research Center, Ministry of Agriculture, Giza, Egypt.

Email

-

City

Giza

Orcid

-

First Name

Nader

Last Name

hassan

MiddleName

-

Affiliation

Animal Production Research Institute, Agricultural Research Center, Ministry of Agriculture, Giza, Egypt.

Email

-

City

Giza

Orcid

-

First Name

Essam

Last Name

El-Gendy

MiddleName

-

Affiliation

Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt.

Email

-

City

cairo Univ.,Egypt

Orcid

-

First Name

Farid

Last Name

Stino

MiddleName

-

Affiliation

Department of Animal Production, Faculty of Agriculture, Cairo University, Giza, Egypt.

Email

-

City

Cairo University, Giza,

Orcid

-

Volume

23

Article Issue

2

Related Issue

7242

Issue Date

2013-07-01

Receive Date

2019-10-20

Publish Date

2013-07-01

Page Start

123

Page End

135

Print ISSN

1110-2594

Online ISSN

2682-3330

Article File

EJRS_Volume 23_Issue 2_Pages 123-135.pdf

PDF . 748.6kB

Link

https://ejrs.journals.ekb.eg/article_54259.html

Detail API

https://ejrs.journals.ekb.eg/service?article_code=54259

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Type

Original Article

Type Code

868

Publication Type

Journal

Publication Title

Egyptian Journal of Rabbit Science

Publication Link

https://ejrs.journals.ekb.eg/

MainTitle

GENETIC ASPECTS IN SOME GROWTH AND MEASUREMENTS TRAITS IN BALADI BLACK RABBITS

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Article

Created At

22 Jan 2023