Applications of Nanotechnology in Animal Reproduction: An Overview

Nanotechnology is revolutionizing reproductive management in farm animals. This cutting-edge field enables preci sion interventions in assisted reproductive techniques (ART), including advanced drug delivery systems, cryopreser vation technologies, and manipulation of gametes and embryos. Nanoparticle-based extenders, such as selenium (Se) and nano-zinc oxide (ZnO), mitigate oxidative stress during cryopreservation, improving sperm viability and post-thaw motility. Controlled-release systems utilizing polymeric and metal-based nanoparticles facilitate the sustained deliv ery of reproductive hormones like progesterone and GnRH, optimizing estrous synchronization and superovulation. Additionally, herbal-extracted nanoparticles, such as those from Moringa oleifera and Curcuma caesia, exhibit potent antioxidant properties, further enhancing sperm preservation. Quantum dots provide real-time insights into fertilization dynamics, while biosensors, including L-tyrosine silver nanoparticles, improve estrus detection rate. Despite these prom ising advancements, challenges such as regulatory hurdles, high production costs, and concerns regarding nanoparticle toxicity persist. Future research aims to refine these technologies for enhanced safety, cost-effectiveness, and seamless integration into sustainable livestock breeding programs.