University of Khartoum

The Effect of High Temperature on Some Biochemical Parameters of the Nile Rate Arvicanthus Niloticus

The Effect of High Temperature on Some Biochemical Parameters of the Nile Rate Arvicanthus Niloticus

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Title: The Effect of High Temperature on Some Biochemical Parameters of the Nile Rate Arvicanthus Niloticus
Author: Mohamed, Elagba Haj Ali; Ibrahim ,Ha
Abstract: This study was designed to determine the lethal temperature of the Nile rat Arvicanthus niloticus and the suitable biochemical indicators of heat stress. All experimental rats completely collapsed after one hour exposure to 42°C, and this was considered as the lethal temperature. Male and female rats loose 3.4% and 4.3% of their body weights, respectively. Plasma osmolality significantly increased (P<0.01) from (334.2 ± 5.8 to 335.5 ± 8.7 m.osm/L) in the males and from (334.2 ± 8.0 to 340.7 ± 8.8 m.osm/L) in the females. The number of red blood cells increased significantly (P<0.05) in females only from (5.5 ± 0.3 to 6.4 ± 0.4 cell/ml), while the packed cell volume (PCV) decreased from (38.3 ± 3.1 to 32.5 ± 3.9%) in males and from (38.2 ± 1.9 to 32.3 ± 3.1%) in females. Hypervolumia and failure of the circulatory system were considered as the main causes of death. Arvicanthus niloticus is recommended as a good model for the study of heat stress syndromes. Osmolality, packed cell volume (hematocit) and red blood cells (erythrocyte number) are also recommended for measuring the general condition check.
URI: http://khartoumspace.uofk.edu/123456789/24537


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