Study of bovine leukemia disease in dairy cow
1984
Yanyong Intraraksa | Tippawan Singtriphop | Vorasak Patchimasiri (Kasetsart Univ., Bangkok (Thailand). Faculty of Veterinary Medicine. Dept. of Veterinary Physiology)
Serological survey for the presence of precipitating antibody to bovine leukemia glycoprotein antigen in apparently 718 healthy dairy cattle showed an incidence of 19.50 % positive reactors of those tested cattle (140 heads). The dairy cattle belonged to Thai-Danish dairy farm and Cooperative dairy farm in Lopburi province. A hematological study showed a slight increase of total white blood cell and percent of lymphocyte and normal total red blood cell and hemoglobin in symptomatic positive dairy cows. However, a tremendous increase of total white blood cell and percent of lymphocyte and a marked decrease of total red blood cell and hemoglobin were found in symptomatic positive dairy cows. A chemical analysis of sodium, potassium, calcium and total protein in plasma of normal dairy cow, asymptomatic positive cow and symptomatic positive cow was performed. The plasma chemical values were 172.03, 170.60 and 112.30 mEq/L for sodium, 7.66, 5.51 and 7.83 mEq/L for potassium, 5.57, 5.34 and 4.09 mEq/L for calcium, 10.57, 12.38 and 16.88 gm % for total protein respectively.
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