The effect of organic and inorganic selenium supplementation with vitamin E to improve the estrus characteristics of Ghezel ewes CIDR used

Studies indicate elements and vitamins play an important role in reproductive function activities.
The present study was concluded to investigate the effect of organic and inorganic selenium supplements along with vitamin E to improve the properties of estrus in Ghezel ewes using CIDR.
Forty-four Ghezel ewes (Age: 2-3 years old, weight: 55±2 kg, body condition score 3) were used. Animals allocated in four groups including eleven ewes in each group. Treatments were divided into four groups: first group: As a control group (basal diet), the second group (basal diet Barley grain), the third group (basal diet Barley grain vitamin E selenium organic), and the forth group (basal diet Barley grain vitamin E inorganic selenium). Ewes received the experimental diets 2 weeks before mating and continued 3 weeks later. Oestrus was synchronized using CIDR.
The highest and the lowest rate of return to estrus were observed in control group (45.5%) and in the fourth group (18.2%) respectively (P It seems that the use of flushing diets containing organic and inorganic selenium along with vitamin E increased the estrus, the probability of fertilization and decreased the non-pregnant ewes.