University of Tehran Iranian Journal of Veterinary Medicine 2251-8894 9 3 2015 10 01 Comparison of energy related metabolites during peri-parturition period in single and twin-bearing Lori-Bakhtiari ewes مقایسه متابولیت های وابسته به انرژی در دوره حوالی زایش در میش های آبستن تک قلو و دوقلو از نژاد لری-بختیاری 149 154 55282 10.22059/ijvm.2015.55282 EN Afshin Raoofi Department of Internal Medicine, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran Mohsen Jafarian Department of Clinical Pathology, Faculty of Specialized Veterinary Sciences, Sciences and Research Branch, Islamic Azad University, Tehran, Iran Shahabeddin Safi Department of Clinical Pathology, Faculty of Specialized Veterinary Sciences, Sciences and Research Branch, Islamic Azad University, Tehran, Iran Mahmoud Vatankhah Department of Animal Sciences, Agriculture and Natural Resources Center, Shahre-Kord, Iran Journal Article 2015 02 09 <span>Background:</span> The Lori-Bakhtiari sheep breed is one of the most common native breed in the south-western parts of Iran. The peri-parturition period (2 weeks before to, 2 weeks after parturition), is generally of critical importance regarding the health, production and profitability of the ewes. <span>OBJECTIVES: </span>This study was carried out to compare the serum concentrations of glucose, non-esterified fatty acid (NEFA), β-hydroxybutyrate (BHBA), cholesterol, blood urea nitrogen (BUN) and calcium (Ca) during peri-parturition period in 30 single and 30 twin-bearing Lori-Bakhtiari ewes. <span>METHODS:</span> All blood profiles were determined in healthy ewes on days 14, 7 prepartum, and days 7 and 14 postpartum. <span>RESULTS:</span> Serum glucose levels were lower in twin-bearing ewes, compared to single-bearing ewes on prepartum and day 7 after lambing. Serum NEFA, BHBA and cholesterol levels were higher in twin-bearing ewes compared to single-bearing ewes during the peri-parturition period. Lower serum Ca levels were recorded 7 days before and after parturition in twin-bearing ewes, compared to single-bearing ewes. <span>CONCLUSIONS:</span> The results showed that NEFA and BHBA recorded significant (p<0.05) changes during the peri-parturition period in twin-bearing ewes. These significant differences could be related to increased metabolic demands of the fetuses in twin-bearing ewes.  https://ijvm.ut.ac.ir/article_55282_3652497dbdfd045f6e5fe3ddd1abeb5c.pdf