Effects of selenium and iodine supplementation on sheep performance in Markazi province, Iran.
2008
Talebiyan Mas`udi, A`li Reza | Faza`eli, Hassan | Bahadori, Sirus | Naderi Niya, Homayun | Ebrahimi, Keyvan
In this study, three sheep flock were selected in three different areus of Markazi Provience in Iran where selenium (Se) and Iodid (I) status was studied in the selected livestocks. In each flock, 120 ews were divided in four groups where three of them used as treatment (TSe ,TI and TSe+I ) and one as contral (C). Ews in TSe, TI and TSe+I resieved Se, I and Se+I supplement respectively, where the C did not resive any supplement. Results showed that, glutation-peroxidase enzyme (GSH-Px) activity as well as the I status were significantly (P0.05) different anong the flocks, where the highest amount (102.2) of the enzyme found in Arak but the lowest (46.3) amount in Shazand flock. The highest urinary concentration of I was detected in Khomain flock (39.0 mg/L), fallowed by Arak flock (35.9 mg/L) but lowest amount (24.7 mg/L) found in Shazand flock. There were significantly (P0.05) differences between the years for GSH-Px activity and urinary I concentration in the ews but the seasond variation was limited only in Arak flock. Injection of Se+E significantly (P0.05) increused GSH-Px activity. Iodid supplementation resulted a significantly (P0.05) higher urine I content. Utilization of supplements affected reprodutive performance of ews positively, however no similar status was found in all flock.
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