HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Hardee, D. D. Articles by Trimberger, G. W. Search for Related Content PubMed Articles by Hardee, D. D. Articles by Trimberger, G. W.

Effects of Feeding Low Levels of Dimethoate on Milk and on Whole Blood Cholinesterase Activity of Dairy Cattle

Department of Entomology

F. H. Fox

Veterinary College

R. F. Holland

Department of Dairy and Food Science

G. W. Trimberger

Department of Animal Husbandry, Cornell University, Ithaca, New York

ABSTRACT

Dimethoate was fed to Jersey cows at 0.28 and 0.56 mg per kilogram of body weight of each cow for 14 days. Analyses of samples taken at regular intervals revealed that if any dimethoate was present, the concentration in milk was less than the five to ten parts per billion sensitivity level of the analytical method. There was no depression in whole-blood cholinesterase activity during the experimental period. Per cent milk fat and total milk production were not affected. No off-flavors or odors attributable to dimethoate were found in any of the milk samples. None of the cows showed any abnormal changes in weight or exhibited any symptoms of insecticide poisoning. Feed intake and excretion were observed as normal.