The Role of Antioxidants in Enhancing Reproductive Performance in Sheep: Physiological, Molecular, and Applied Perspectives

Year 2025, Volume: 8 Issue: 6, 875 - 884, 15.11.2025

Fatih Ahmet Aslan

https://doi.org/10.47115/bsagriculture.1746955

Abstract

In small ruminant production, particularly in sheep, high reproductive performance holds strategic importance in terms of genetic sustainability, animal welfare, and economic efficiency. However, environmental stress, inadequate nutrition, and climate change are among the leading factors that increase oxidative stress, thereby negatively affecting fertility. This review examines the impact of antioxidants on reproductive physiology, spanning from mating to advanced stages of pregnancy, based on a comprehensive analysis of national and international scientific literature. Antioxidants such as vitamins C and E, selenium, astaxanthin, and moringa oil have been shown to improve sperm quality and libido in rams, while enhancing ovulation success, placental function, and embryo viability in ewes. Genetic markers (e.g., MTNR1A) have been identified as influential in individual responses, underscoring the need to tailor antioxidant supplementation according to environmental conditions. In this context, Turkey’s rich diversity of medicinal and aromatic plants offers not only national but also global strategic potential for biological sustainability and natural antioxidant resources. In conclusion, seasonally timed and individualised antioxidant protocols are considered effective and sustainable strategies for enhancing reproductive success in sheep production systems.

Keywords

Antioxidant , Sheep , Reproductive performance , Oxidative stress , Selenium

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