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Factors Affecting the Secondary Sex Ratio of the Iranian Raeini Goats

Article

Last updated: 01 Jan 2025

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Abstract

Commonly,the secondary sex ratio - the animal proportion of the same gender in the population at birth- is equal. This study aimed to identify the environmental and genetic factors affecting the secondary sex ratio of the Iranian Raeini goats. The data from 13563 goats included 7752 males and 5811 females were used to evaluate the effect of genetic and environmental factors by fitting 10 different animal models. In these models, the effects of herd-year of birth, birth type, province, maternal age, permanent environmental (dam and sire) and genetic factors (such as additive, sire, maternal and maternal grandsire) were included. The results showed that the effect of the herd-year of birth and the birth month on the secondary sex ratio were significant (P < 0.001), while the effect of the province, birth type and maternal age were not significant (P > 0.05). By studying the animal models, it could be concluded that the contribution of the genetic factors contributing to the variations of the secondary sex ratio were negligible.

DOI

10.21608/ejvs.2018.2549.1027

Keywords

Environmental factors, Genetic factors, heritability, Raeini goat, Secondary sex ratio

Authors

First Name

Shahabodin

Last Name

Gharahveysi

MiddleName

-

Affiliation

Department of Animal Science, Faculty of Agriculture, Islamic Azad University-Qaemshahr Branch, Qaemshahr, Iran

Email

s.gharavysi@gmail.com

City

Qaemshahr

Orcid

0000-0002-1069-0215

First Name

Peiman

Last Name

Hamidi

MiddleName

-

Affiliation

Department Of Animal Science, Faculty of , Agriculture, Islamic Azad University-Qaemshahr Branch, Qaemshahr, Iran

Email

peyman.h.63@gmail.com

City

-

Orcid

-

First Name

Rohullah

Last Name

Abdollahpour

MiddleName

-

Affiliation

Department Of Animal Science, Faculty of , Agriculture, Islamic Azad University-Qaemshahr Branch, Qaemshahr, Iran

Email

rohullah1979a@gmail.com

City

-

Orcid

-

First Name

Abbas

Last Name

Abbasi

MiddleName

-

Affiliation

Department Of Animal Science, Faculty of , Agriculture, Islamic Azad University-Qaemshahr Branch, Qaemshahr, Iran

Email

abbas90abbasi@gmail.com

City

-

Orcid

-

Volume

49

Article Issue

1

Related Issue

933

Issue Date

2018-06-01

Receive Date

2018-01-07

Publish Date

2018-06-30

Page Start

35

Page End

41

Print ISSN

1110-0222

Online ISSN

2357-089X

Link

https://ejvs.journals.ekb.eg/article_8000.html

Detail API

https://ejvs.journals.ekb.eg/service?article_code=8000

Order

4

Type

Original Article

Type Code

140

Publication Type

Journal

Publication Title

Egyptian Journal of Veterinary Sciences

Publication Link

https://ejvs.journals.ekb.eg/

MainTitle

Factors Affecting the Secondary Sex Ratio of the Iranian Raeini Goats

Details

Type

Article

Created At

22 Jan 2023