肝蛭駆除による二等乳泌乳牛の治療成績

Abstract

Cows secreting substandard milk which had been found collectively in the Ina district of Nagano Prefecture were examined for blood, urine, feces, and quality of milk.As a result, eggs of the liver fluke were detected from all of them.Then all these cows (totaling fifteen) were administered peros with a single dose of 0.25g/kg of hekisaron, a proprietary preparation of hexachlorethane. The following results were obtained from tests performed 15 days after anthelmintic treatment.1.Negative alcohol tests were given by six of ten cows. In two of the six cows, liver fluke eggs were still detected, but the results of the Gross react and the A/G ratio were improved. Accordingly, it was considered that the quality of their milk might have been ameliorated by the activation of liver function.Besides, no remarkable changes were observed in all the mineral contents of the blood of these cows, except dialytic calcium which increased a little.2.Among the remaining four of the ten cows, mastitis was demonstrated in three by milk quality tests, liver dysfunction and unbalanced equilibrium of the minerals in the serum were detected in three by blood tests, excessively superfluous or insufficient amounts of feed had been given to three, and other undesirable conditions of feeding and management were found in three.In short, every one of the four cows was suffering from two or three entities of these seemingly unfavorable conditions. Remarks: By the term substandard milk the authors mean the milk alcohol-test-positive with normal acidity.