AHMED, A., TIWARI, R. P., KHAN, J. R., TIWARI, S. P., & MISHRA, G. K. (2017). Bio-stimulatory effects of bull urine (BU), PRID and GnRH on hormonal profile and association with blood minerals in pubertal anestrus Sahiwal heifers. The Indian Journal of Animal Sciences, 87(6), 707–710. https://doi.org/10.56093/ijans.v87i6.71068