Normal Cholinesterase Activity in the Erythrocytes of Cattle1

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Abstract:

Fourteen groups of beef and dairy cattle belonging to Clemson College were employed in this experiment. A total of 75 animals were represented with 160 blood samples taken. At least two and usually three or four determinations were conducted on each sample for erythrocyte cholinesterase enzyme activity.

The electrometric method with the stated modifications was the basic method employed in determining the cholinesterase activity. (Michel 1949.)

It appears that variations in ambient temperature have no effect on bovine cholinesterase activity.

The mean for beef cattle was found to be delta pH/hr. 0.4:H and for dairy cattle delta pH/hr. 0.410. Although the dairy cattle mean was slightly lower than the mean of beef cattle, it was not significant at the 5% level of probability.

The mean for the 14 groups of beef and dairy cattle was found to be delta pH/hr. 0.422 with its confidence limits of ± 0.074.

Document Type: Research Article

Publication date: February 1, 1959

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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