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Concentration levels of butyrylcholinesterase in cows as an indicator of the use of agrochemicals in farms in Colombia.

A. Celemin-Sarmiento

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06-23-2020

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Abstract:

T81
Concentration levels of butyrylcholinesterase in cows as an indicator of the use of agrochemicals in farms in Colombia.
A. Celemin-Sarmiento*, L. Bernal-Bechara. Animal Science Research Group (ASRG), Animal Science Program, Faculty of Agricultural Sciences, La Salle University Bogot�, Cundinamarca, Colombia.

The use of agrochemicals in agriculture to increase productivity is well known. However, the impact of these chemical compound to the environment and livestock products is still limited. The aim of the study was to identify if butyrylcholinesterase (BCh) concentration levels in milk serum and blood plasma of cows can be a good predictor for the use of agrochemicals. The study was carried out in 3 agricultural production systems located in the cities: Sop�, Sibat�, and Ch�a, Cundinamarca state and one production system where agrochemical compounds are not used Sumapaz moorland. Milk samples and blood serum were taken from the cows to determined butyrylcholinesterase concentration. For this, a commercial kit from Wiener lab was used for enzyme determination. Six cows were used as control and 6 cows (2 per farm) that were exposed to agrochemicals products. The data was analyzed as a random completely design by ANOVA and Tukey test was performed to find differences between treatments. Significant differences in blood serum were found between treatments (P < 0.05) by BCh. Control reports 233.91 U/L vs Treatment 120.71 U/L. Furthermore, no significant differences in milk serum (P > 0.05) was found. Control reports 70.97 U/L vs Treatment 34.07 U/L. Agrochemical compounds was found at low concentration of the enzyme in blood serum compared with the control. Agrochemicals such as organophosphates and carbamates decrease enzyme concentration in the blood plasma of animals exposed to these chemical compounds. So it is suggested to perform the same test in milk in the future to determine the enzymatic concentration of butyrylcholinesterase to evaluate if milk samples can be used for enzymatic butyrylcholinesterase determination.

Keywords: butyrylcholinesterase, milk serum, blood plasma.