• Dr. S.Vigil Anbiah

Fifty cows in early, mid and late lactation, dry cows along with a reference group were screened for haemato chemical analysis using standard procedures. At early lactation, the mean haemoglobin concentration was 8.16±0.31 g% which showed lowered trend as compared to other recorded means of lactating cows. The Packed Cell Volume was 30.1±1.60 % in the early lactation which was increased to 37.0±1.48 % during late lactation. Erythrocyte count was higher in the reference group with 6.43±0.41 x 106/µl cells when compared to the lacating groups. The blood glucose content in the early lactation was 36.44±3.24 mg/dl. The pregnant dry animals recorded the lowest total cholesterol value of 14.19±5.75 mg/dl and the reference group value is 88.35±3.13 mg/dl. Total Serum Protein was less (7.40±0.50 g/dl) in late lactation than early and mid-lactations. The blood urea nitrogen values differ significantly (P<0.05) amongst different groups of lactating cows. The Calcium level in the early lactation was 8.1±0.93 mg/dl. The serum phosphorus content of the reference group is higher 5.57±0.29 mg/dl than the other cows of various stages of lactation. The serum magnesium concentration in various groups of cows did not differ significantly in this study.

Haematology, Lactation, Glucose, Total proteins, Blood Urea Nitrogen, cholesterol, calcium, phosphorus and magnesium.

"HAEMATO CHEMICAL CHANGES IN VARIOUS STAGES OF LACTATION IN THE NON DESCRIPT COWS OF CUDDALORE DISTRICT, TAMIL NADU", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 11, page no.210-212, November-2018, Available :http://www.jetir.org/papers/JETIR1811430.pdf

"HAEMATO CHEMICAL CHANGES IN VARIOUS STAGES OF LACTATION IN THE NON DESCRIPT COWS OF CUDDALORE DISTRICT, TAMIL NADU", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 11, page no. pp210-212, November-2018, Available at : http://www.jetir.org/papers/JETIR1811430.pdf