Abstract
The present study was designed to evaluate ionized calcium and other electrolyte parameters of crossbred dairy downer cows in dried up Cauvery Delta region of Tamilnadu. Downer cow syndrome (DCS) is an important condition of dairy cows which usually occurs following hypocalemic parturient paresis. Animals which are all brought to the Large Animal Medicine Referral Unit, Orathanadu with a complaint of inability to rise without any fractures were selected for the present investigation from May 2016 to May 2018. Blood samples were collected and serum samples were analyzed for electrolytes such as Potassium (K), Sodium (Na), Chloride (Cl), ionized calcium (iCa), total calcium (TCa) and pH. These results were analyzed statistically. When compare to the healthy dairy cow significant variations was observed in potassium and ionized calcium values of recumbent cows at p

Key words: Ionized Calcium, Electrolyte Profile, Downer Cows, Hypokalemia