Abstract:

In order to ascertain the effects of selenium supplement on the serum hormone concentration and superovulation effect of donor sheep, 24 two-years old Suffolk managed under stall-feeding condition were divided into treatment and control group randomly. The treatment group was injected with sodium selenite vitamin E injection 4 ml (i.e.0.46 mg/ml) before superovulation treatment, and control group was injected with nothing. The quality and quantity of embryo of Suffolk sheep were evaluated along with the embryo transfer, the serums were prepared to determine the levels of P4、E2、FSH、LH、FT3 and FT4 at 25th-day after treatment. The results showed that 8.7available embryos were collected from treatment group, that was 2.1 more than that of control group. The serum P4、E2 concentrations of treatment group were 8.46 ±4.54ng/ml and 13.49±4.41pg ml respectively，both of them were significantly more than that of control group(P< 0.05). The serum FSH and LH levels of treatment group were 5.46±1.55and 4.12±1.19mIU/ml, there was no obvious difference between two groups. The serum FT3 and FT4 levels were 4.67±0.71and 10.23±2.32 pmol/L respectively，FT4 level was significantly lower than that of control group（P< 0.05. Hence, the quantity of available embryo and serum P4 and E2 of Suffolk sheep used for donor were improved by injection with Sodium selenite vitamin E injection.