Beta
119185

ESTIMATES OF GENETIC PARAMETERS AND SIRE EVALUATION FOR GROWTH TRAITS IN FRIESIAN CALVES IN EGYPT

Article

Last updated: 04 Jan 2025

Subjects

-

Tags

-

Abstract

Data used in this study were collected over a period of ten years (from 1985 to 1994) from two farms belonging to the Egyptian Company for Meat and Milk Production, Ministry of Agriculture, Egypt.  Live body weights of 1110 Friesian calves (650 male and 460 Female) progeny of 22 sires were used in the present study.  Sires with at least 10 daughters were used in the statistical analysis using Harvey (1990) program. Unadjusted means of birth weight, weight at three, six, nine and twelve months of age were 30.1, 78.7, 121.8, 165.1 and 204.4 kg, respectively.  Average daily gain were 0.556,  0.521, 0.498, 0.468 and 0.502 kg/day during the period from birth to three months of age, 3 to 6.6 to 9.9 to 12 and from birth to twelve months of age.  Heritability estimates of birth weight, weight at 3, 6, 9 and 12 months of age were 0.12, 0.19, 0.10, 0.17 and 0.18 and for daily gain from birth to three months of age, 3 to 6.6 to 9.9 to 12 were 0.19, 0.03, 0.07 and 0.18, respectively.  Genetic correlations among both weights at different ages all ranged from 0.25 and 0.99. All genetic correlations between body weights and body weight gains were positive except, that between birth weight and each of gain from birth to three months of age and from three to six months of age, and between weight at three months and each of gain from three months to six months of ages and gain from nine to twelve months of age.  Sire transmitting abilities (ETA's) ranged from –1.138 to 1.046 for birth weight, from –2.423 to 2.939 for weight at three months of age, while ETA estimates for daily gain from G0-3 and G3-6 were 0.059 and 0.017 kg/day, respectively.  All Spearman rank correlation coefficients among ETA's of studied traits were positive.  The results indicated the presence of great variation in growth traits.  Selection would lead to improve the growth rate in Friesian calves under Egypt conditions.  

DOI

10.21608/jappmu.2009.119185

Keywords

Friesian, growth traits, genetic parameters, sire evaluation, Egypt

Authors

First Name

N.

Last Name

Shalaby

MiddleName

A.

Affiliation

Department of Animal Production, Faculty of Agriculture, Mansoura University, PC: 35516, Mansoura, Egypt.

Email

-

City

-

Orcid

-

First Name

M.

Last Name

El-Arian

MiddleName

N.

Affiliation

Department of Animal Production, Faculty of Agriculture, Mansoura University, PC: 35516, Mansoura, Egypt.

Email

-

City

-

Orcid

-

First Name

M.

Last Name

Mostafa

MiddleName

A.

Affiliation

Department of Animal Production, Faculty of Agriculture, Mansoura University, PC: 35516, Mansoura, Egypt.

Email

-

City

-

Orcid

-

First Name

Manal

Last Name

Ismail

MiddleName

K.

Affiliation

Department of Animal Production, Faculty of Agriculture, Mansoura University, PC: 35516, Mansoura, Egypt.

Email

-

City

-

Orcid

-

Volume

34

Article Issue

9

Related Issue

17903

Issue Date

2009-09-01

Receive Date

2020-10-17

Publish Date

2009-09-01

Page Start

9,379

Page End

9,388

Print ISSN

2090-3642

Online ISSN

2090-3723

Link

https://jappmu.journals.ekb.eg/article_119185.html

Detail API

https://jappmu.journals.ekb.eg/service?article_code=119185

Order

1

Type

Original Article

Type Code

876

Publication Type

Journal

Publication Title

Journal of Animal and Poultry Production

Publication Link

https://jappmu.journals.ekb.eg/

MainTitle

ESTIMATES OF GENETIC PARAMETERS AND SIRE EVALUATION FOR GROWTH TRAITS IN FRIESIAN CALVES IN EGYPT

Details

Type

Article

Created At

22 Jan 2023