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PHYSIOLOGICAL AND GENETIC ISSUES FOR TOLERANCE TO HEAT STRESS IN SUBTROPICAL SHEEP AND GOATS RAISED IN HOT DRY AREAS

Article

Last updated: 04 May 2025

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Subjects

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Tags

Animal genetic and breeding

Abstract

Near East region is getting warm at a faster rate than the global average. Egypt is particularly vulnerable to the impacts of climate change (CC). Local livestock are facing significant challenges in regulating their physiological functions under stressful hot dry conditions. The present article reviews studies conducted on tolerance of subtropical Egyptian sheep and goats breeds to heat stress (HS) under different hot and dry regions.
      Respiration rate (RR) increased significantly with HS and has been identified as a reliable measure for differentiating heat-tolerant local sheep. Changes in RR are less pronounced in local goats (which reflect better tolerance to HS) than sheep. Local goats adapt HS, primarily, by reducing their heat production, while local sheep rely on their respiration function to cope with HS. Body weight of subtropical sheep and goats are related to their thermoregulation capacity, heavy weight animals are less suited to hot dry environment.
      Genomic analyses have identified several genomic regions associated with adaptation of local sheep and goats to hot dry conditions. Their adaptation is mediated by a complex network of genes that function together rather than relying on single candidate genes. Adaptation strategies to environmental stress in hot dry areas reported by the breeders, include precision feeding to enhance feed efficiency, improving farm facilities and innovative breeding promoting well adapted animals and enhance the resilience of local sheep and goats breeds in hot dry areas. Future research in arid areas, should emphasize their molecular mechanisms that underlie heat tolerance to hot dry conditions.

DOI

10.21608/ejap.2025.325255.1091

Keywords

Subtropical sheep and goats, heat stress tolerance, hot dry environments, Physiological adaptations, genomic analysis

Authors

First Name

Adel

Last Name

Aboulnaga

MiddleName

-

Affiliation

Animal Production Research Institute, Agriculture Research Center, Cairo, Egypt

Email

adelmaboulnaga@gmail.com

City

Cairo

Orcid

0000-0003-2707

First Name

Shaimaa

Last Name

Mohamed

MiddleName

-

Affiliation

Animal Production Research Institute, Agriculture Research Center, Cairo, Egypt

Email

shaimaa.mohamed@arc.sci.eg

City

Giza

Orcid

-

First Name

Rasha

Last Name

Ahmed

MiddleName

-

Affiliation

Animal Production Research Institute, Agriculture Research Center, Cairo, Egypt

Email

rasha_m39@yahoo.com

City

Cairo

Orcid

-

First Name

Layaly

Last Name

Gamal

MiddleName

-

Affiliation

Animal Production Research Institute, Agriculture Research Center, Cairo, Egypt

Email

layalyelshetaa@gmail.com

City

-

Orcid

-

First Name

Mohmed

Last Name

Shafie

MiddleName

-

Affiliation

Animal Production Research Institute, Agriculture Research Center, Cairo, Egypt

Email

mh.shafie@gmail.com

City

Cairo

Orcid

-

Volume

62

Article Issue

1

Related Issue

53779

Issue Date

2025-01-01

Receive Date

2024-11-12

Publish Date

2025-01-01

Page Start

37

Page End

47

Print ISSN

0302-4520

Online ISSN

2735-3028

Article File

EJAP_Volume 62_Issue 1_Pages 37-47.pdf

PDF . 603.1kB

Link

https://ejap.journals.ekb.eg/article_419511.html

Detail API

http://journals.ekb.eg?_action=service&article_code=419511

Order

4

Type

Original Article

Type Code

1,298

Publication Type

Journal

Publication Title

Egyptian Journal of Animal Production

Publication Link

https://ejap.journals.ekb.eg/

MainTitle

PHYSIOLOGICAL AND GENETIC ISSUES FOR TOLERANCE TO HEAT STRESS IN SUBTROPICAL SHEEP AND GOATS RAISED IN HOT DRY AREAS

Details

Type

Article

Created At

29 Mar 2025