Effects of Vitamin E and Selenium on Fertility and Lamb Performance of Yankasa Sheep

Abstract

Effects of vitamin E and Selenium administration on fertility and lamb performance of Yankasa sheep were evaluated. Thirty post pubertal ewes (1-1 1/2 years of age) and nine rams (2-2 1/2 years of age) were used for the study. The ewes were randomly assigned into 3 groups (n = 10). Animals in group 1 served as control and were administered 1 ml normal saline. Animals in group 2 were administered 90 mg Tocopherol acetate (Vitamin E), while group 3 received injection containing a combination of 100 mg tocopherol acetate and 1.97 mg sodium selenite. Two doses of the injections were administered 14 days apart (subcutaneously). Estrus was synchronized in the ewes using controlled internal drug release device (CIDR). Rams were used for estrus detection and mating starting 24 hours following withdrawal of CIDR. Ewes were allowed to carry the pregnancy to term. The results indicate higher (p < 0.05) estrus response (80.00, 100.00, 100.00), pregnancy rate (75.00, 100.00, 100.00) and lambing rate (66.6, 100.00, 100.00) in ewes following administration of vitamin E and a combination of vitamin E and selenium. Average daily weight gain of lambs was also significantly enhanced (p < 0.05) by treatment. It can be concluded that administration of Vitamin E alone and in combination with selenium resulted in improved reproductive performance on Yankasa sheep.

Dietary supplementation of nano-selenium eliminates the negative effects of long-term ivermectin injection on growth and reproductive performance of female rabbits

“…Oxidative stress has been linked to infertility, implantation failures, and pregnancy loss [ 49 , 50 ]. Reactive oxygen species affect a lot of reproductive processes, including folliculogenesis, oocyte maturation, ovulation, corpus luteum formation, and regression, as well as implantation and fetal development [ 51 ]. Al-Hizab and Mostafa [ 50 ] reported that doramectin administration induced a number of pathological changes, including congestion of ovarian blood vessels and endometrial edema after 3 weeks of double therapeutic dose and ovarian degeneration, leading to excessive atresia of follicles after a prolonged period of injection of the drug.…”

Stress Factors and Their Effects on Productivity in Sheep

“…It was reported that malnutrition of ewes resulted in a low body weight and body condition score, which had a negative effect on oocyte quality, resulting in lower cleavage and blastocyst formation rates. Musa et al (2018) [126] reported that vitamin E administration alone and in combination with selenium improved reproductive performance in ewes.…”

Reproductive performance and lamb’s birth weight in Ossimi ewes treated with organic selenium and nano-selenium under Upper Egyptian condition

“…(CG), ewes served as control. Ewes in the G2: (SeG) was dosed with organic selenium 3 mg/ewe orally for 14 days from IVS inserts according with Ali, (2009) and Musa et al (2018). And the G3: (N-SeG) were received nanoselenium 0.2 mg/ewes orally for 14 days from IVS insert according to Stefanov et al (2018).…”