THE EFFECT OF AGE, GENDER AND PREGNANCY ON THE CHANGES IN LIPIDS AND SERUM LIPOPROTEINS OF BALUCHI SHEEP IN SISTAN REGIONSardashti Birjandi E., Hashemi S.H. and Sarani A.Abstract The present study was conducted in autumn on 100 apparently healthy Baluchi sheep at Livestock Station of Zabul Universitys Special Livestock Research Center in order to investigate the effect of age, gender and pregnancy on the changes in lipids and serum lipoproteins of Baluchi sheep in Sistan region. The studied animals were prepared from a breeding unit with a closed breeding system and similar management, nutritional and sanitary conditions. Blood sampling was carried out from the jugular vein of the ewes at certain times in the morning. The samples taken were transferred to the laboratory in the vicinity of the ice. The samples serum was then isolated by centrifugation for 10 minutes at 3000 rpm and stored at- 0° C until the parameters were measured. The parameters studied in this research were measured using an Auto Analyzer. The results were analyzed by one-way ANOVA and T-test through SPSS V21 and the significant level was considered to be (P <0.05). The study results showed that the mean serum cholesterol of the assessed samples was significant (P> 0.05) based on the pregnancy status and the pregnant sheep had higher mean cholesterol levels. There was also a significant difference between LDL and HDL cholesterol levels in Baluchi sheep in terms of age (P<0.001). That is, it was higher in the sheep with a mean age of 3 years. Statistical analysis showed no significant difference between the other studied parameters (age, gender, etc.).
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