M. SINGH, R. T. Mollier, R. Kumar, R. Katiyar, D. J. Rajkhowa, and V. K. Mishra, “Estrus synchronization and fixed time artificial insemination (AI) in pig: Improving the pig productivity”, Ind. Farming, vol. 72, no. 5, Mar. 2022, Accessed: Oct. 31, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IndFarm/article/view/119370