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Online Journal of Veterinary Research

(Including Medical and Laboratory Research)

Established 1994

ISSN 1328-925X

Volume 26 (3): 213-218, 2022.

Effect of calcium salt fatty acid supplement on conception,

estrogen, progesterone, insulin and cholesterol in ewes


Amir Hossein Asgari Safdar1, Nematoallah Dayyani2, Nasroallah Moradi Kor3


1Young Researchers and Elite Club, Baft Branch, Islamic Azad University, Baft, 2 Department of Animal Science, Saveh Branch, Islamic Azad University, Saveh, 3 Young Researchers and Elite Club, Kerman Branch, Islamic Azad University, Kerman, Iran




Asgari Safdar AH, Dayani N, Kor NM., Effect of calcium salt fatty acid supplement on conception, estrogen, progesterone, insulin and cholesterol in ewes, Onl J Vet Res., 26 (3): 213-218, 2022. Four groups of twelve 2 to 3 year, ~46kg Ashari ewes kept in separate pens were fed barley grain (1), 5% DM calcium salts from flaxseed (2) or sunflower oil (3) with controls (4) fed only basal diet. Ewes were synchronized with progesterone device in vagina 14 days and pregnant mare serum gonadotropin injection. Serum estrogen, progesterone (P4) and insulin were determined at 0h, 24h before and after device implant, as well as 14 days after mating. Compared with controls we found that barley and calcium salts in flaxseed and sunflower oils boosted conception by ~29 to 47%, birth weight ~6 to 16% and lambing (x2= 10.50, p <0.05). All ewes given calcium salts became pregnant at 1st service whereas those given barley and controls only 83-92%. Estradiol was enhanced ~17% 24h after removal of implants. Our results suggest that calcium salts in flaxseed may boost fertility and lambing in Afshari ewes.



Key words: Calcium salts, flushing, lambing, reproduction, ewes.