SELVARAJU S, RAJASUNDARAM RC. Influence of GnRH and eCG on oestrus response and progesterone profile in norgestomet primed postpartum anoestrus cows*. Indian J of Anim Sci. 2014;71(3). Accessed October 23, 2025. https://epubs.icar.org.in/index.php/IJAnS/article/view/36505