Vol. 11, Special Issue 7 (2022)

Author(s):
Jyoti Yadav, Anju Chahar, Hemalata Kushwaha, Sunita Choudhary and Mamta Meena

Abstract:
The study was conducted on 270 dairy cows. The milk samples of these cows were screened by California Mastitis Test (CMT) to find out prevalence. A total of 50 cows were taken for further study and divided into subclinical mastitis group (give only positive CMT reaction and no clinical findings) and control(cows show negative CMT reaction and absence of clinical findings).25 animals were taken in clinical mastitis group on the basis of clinical examination and California Mastitis Test (CMT) from various places. The cows showing negative reaction were considered as healthy control. Blood samples of these cows were taken for haematological studies. There was 16.29% animal wise prevalence of subclinical mastitis in dairy cattle of Bikaner. A significant increase (p<.05) in neutrophil and significant decrease (p<.05) in haemoglobin, total erythrocyte count, packed cell volume were observed. No significant difference were observed in monocyte, lymphocyte and total leukocyte count in cows with mastitis groups.