Association HSP70with some physiological parameters in dairy goat under south Turkey conditions

Abstract

Background: It has been demonstrated that the composition of HSP70 heat shock protein 70 is temperature correlated HSP70 effects is one as cellular thermometer in response to heat stress and other stimuli. Goat also possess anatomical and physiological characteristics that qualify for their wide ability to ecological adaptability, nevertheless, the productivity of the individual declines during thermal stress .the study in the issuance of this article accomplished to analyze the level of concentration of heat shock protein variance heat stress phenotypes in response to chronic heat stress. Ruslt: The investigation has been carried out in Alpin (brown colour), Saanen (Wightcolour), these breeds same age (1-2 year) and differ in size and production performance. The thermostress appreciation was at a temperature humidity index (THI) 80.8 during summer, 55.1 during winter and 70.1 during spring. Physiological parameters for thermal stress susceptibility was carried at by combining pulse rate (PR) (bpm), respiration rate (RR) (breath/min), body temperature (BT) °C, skin temperature (ST) °C and head temperature (HT). HSP70 level of concentrations were analyzed with ELISA, the gene expression pattern of HSP70 in different seasons indicated that the HSP70 for Saanen breed was 26.9, 18.3 and 14.1 during spring, summer and winter respectively. HSP70 for Alpine was 12.7, 13.7 and 14.7 in the spring, summer and winter respectively. Conclusion: The seasonal variation associated with changes of environmental variable, especially ambient temperature had great effects on physiological and cellular function of goats. Under adverse climatic conditions the body and skin temperature of goats increased due to the heat loading into the animal body. To maintain the homeothermy, goats increased their respiratory frequency to promote heat dissipation. Moreover, goats’ body develop a cellular pathway to cope thermal challenge. This later is expressed through the high synthesis of heat shock protein that was observed in this study. HSPs represents an important molecular indicator when assessing heat stress in goats.