Heat stress effects on sheep: Are hair sheep more heat resistant?

Theriogenology
Concepta M McManusSamuel R Paiva

Abstract

Climatic variables can trigger physiological, biochemical, haematological and hormonal alterations that influence the maintenance of homeothermy and can affect production and productivity in sheep. Different mechanisms are responsible for tolerance to heat stress (HS) including coat and skin colour, body size, fat distribution, physiological reactions and not just coat type (hair/wool). This review looks at physical, physiological, molecular and genetic aspects of heat tolerance in sheep and how they affect hair and wool sheep. We propose that it is the adaptation to hot environments and not the type of coat (wool/hair) itself that determines the capacity of the resistance of the animal to HS, due to modifications in essential pathways such as energy metabolism, physiological responses and body size. When studied in similar environments, commercial wool breeds tend to show higher heat stress, but hair breeds tend not to differ from wool breeds that are adapted to hot environments.

References

Mar 1, 1979·Biology of Reproduction·R P Wettemann, C Desjardins
Oct 1, 1992·International Journal of Biometeorology·M J da CostaR C de Souza
Sep 1, 1990·Journal of Animal Science·V Guerriero, D A Raynes
Apr 1, 1974·Journal of Animal Science·A N Bhattacharya, F Hussain
Jul 1, 1996·Endocrinology·I A BarashR A Steiner
Sep 1, 1996·Journal of Reproduction and Fertility·J P KastelicG H Coulter
Mar 10, 1999·Journal of Reproduction and Fertility·B P Setchell
Aug 31, 2000·Biochemical and Biophysical Research Communications·K TsutsuiP J Sharp
May 30, 2003·Pharmacological Reviews·K AsadullahH D Volk
Jul 3, 2003·Journal of Dairy Science·J W West
Feb 9, 2005·The Journal of Reproduction and Development·Takaya MatsuzukaYukio Kanai
Apr 28, 2005·Reproduction : the Official Journal of the Society for the Study of Fertility·M OzawaY Kanai
Jul 2, 2005·International Journal of Biometeorology·Nicola LaceteraAlessandro Nardone
Nov 15, 2005·The Journal of Clinical Investigation·Carl de LucaStreamson C Chua
Aug 26, 2006·Reproduction, Fertility, and Development·J YaeramS Maddocks
Apr 5, 2007·Tropical Animal Health and Production·J M MwacharoJ E O Rege
Jan 26, 2008·Journal of Dairy Science·R J CollierL H Baumgard
Dec 5, 2008·Tropical Animal Health and Production·Concepta McManusSamuel Rezende Paiva
Apr 17, 2009·International Journal of Biometeorology·U BernabucciB Ronchi
Oct 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Peter J Hansen
Nov 13, 2009·Journal of Animal Physiology and Animal Nutrition·A L LourençoA A Dias-da-Silva
Jul 24, 2010·Tropical Animal Health and Production·Marlos CastanheiraConcepta McManus
Aug 4, 2010·Tropical Animal Health and Production·Concepta McManusTiago Prado Paim
Oct 12, 2010·Proceedings of the National Academy of Sciences of the United States of America·Henning Steinfeld, Pierre Gerber
Apr 21, 2011·Tropical Animal Health and Production·Serdal DikmenHakan Ustuner
Feb 2, 2012·General and Comparative Endocrinology·Eric W RoubosLu Xu
Feb 14, 2012·Animal Reproduction Science·H DobsonR F Smith
Feb 22, 2012·PLoS Biology·James W KijasUNKNOWN International Sheep Genomics Consortium Members

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Citations

Jan 16, 2021·Tropical Animal Health and Production·Concepta Margaret McManusSamuel Rezende Paiva

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