Effect of heat shock program on physical semen characteristics and blood constituents of buck rabbits under hot conditions

H. Z. Amer; A. S. Morsy

doi:10.14710/jitaa.51.2.83-93

DOI: https://doi.org/10.14710/jitaa.51.2.83-93

Effect of heat shock program on physical semen characteristics and blood constituents of buck rabbits under hot conditions

H. Z. Amer

- Deparment of Biology, College of Science, Jazan University, Saudi Arabia

*A. S. Morsy

- Animal and Poultry Physiology Department, Desert Research Center, Egypt

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Abstract

This study aimed to release the heat shock protein 70 by applying heat shock exposure programs
at early ages on physical semen characteristics and blood constituents of Hi-Plus buck rabbits under hot
conditions. A total number of 40 Hi-Plus buck rabbits were divided into four equals treatments: the 1st
treatment (C), bucks served as control. Rabbits of 2nd, 3rd and 4th treatments were exposed to heat shock
program. The 2nd treatment (HSE30) exposed at 30 days of age, the 3rd treatment (HSE60) exposed at
60 days of age and the 4th treatment (HSE30+60) exposed at 30+60 days of age. HSP70 and blood metabolites were increased (P≤ 0.05) in the rabbits of HSE groups compared to control group. Triiodothyronine hormone was increased (P≤0.05) in HSE groups as compared to control group. Corticosterone hormone decreased (P≤0.05) in the rabbits of HSE groups as compared to control group.
Physical semen quality was improved (P≤0.05) in rabbits of HSE groups as compared to control group.
In conclusion, early heat shock exposure programs for buck rabbits might increase release of HSP70
which positive reflect on enhance physiological responses and physical semen characteristics under
severe heat stress conditions.