Theriogenology of pre and post parturient downer syndrome and persistent or recurrent hypocalcaemia, in 20 cows and 2 buffaloes of Small farmers, during July to October 2018, in rural areas of Rayalaseema Region, were intervened. After witnessing the poor response of conventional treatment which included an infusion of either Calboral or Mifex and Tonophosphan, parenteral phosphorus, all the 22 dairy farmers adopted the new intervention of infusion of calcium enriched Taurine (Taurocal). The

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... overy was dramatic with a cure rate at 86%. The possible therapeutic effect with regard to calcium homeostasis, stress factors, serotonin modulation and energy metabolism Were discussed. Keywords: Pre and post parturient downer syndrome, persistent hypocalcemia, infusion of Taurocal-dramatic response -intervention study