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[The Effectiveness of the Repellents Diethyltoluamide and Phenylpropandiol in Grazing Primiparous Cows]

[The Effectiveness of the Repellents Diethyltoluamide and Phenylpropandiol in Grazing Primiparous Cows]

J Ríha, J Minár, A Vlcek, D Bartonková

Vet Med (Praha). 1991 Feb;36(2):65-9.

PMID: 1807023

Abstract:

In practical farming conditions of an agricultural enterprise situated in South-East Moravia, the repellents N,N'-diethyl-m-toluamide and 2-phenyl propanediol 1,3 were tested after their application to grazing first-calves of the Bohemian Pied breed. The experiment was conducted in July and August 1986 and it took 40 days. In the first experimental group, 2-phenyl propanediol 1,3 was applied and in the other group a 1:1 mixture of the repellents N,N'-diethyl-m-toluamide and 2-phenyl propanediol 1,3 in form of a 10% water emulsion in the interval of 48 hours. No flights and bites of annoying insects (gad-flies, black-flies, gnats, midges, symbovine flies) were observed in treated first-calves in the two experimental groups. The economic efficiency of 2-phenyl propanediol 1,3 application in the first experimental group was manifested by the higher milk yield by 1.20% and by the higher milk fat yield by 0.13%; when the mixture of N,N'-diethyl-m-toluamide and 2-phenyl propanediol 1,3 was used, the milk yield increased by 2.27% and the milk fat yield by 0.17%, in comparison with the control group. Considering that some meteorological factors had worse values in the test year, after their mathematico-statistical evaluation they had significantly different values from those recorded in the two preceding years, the differences in milk production and fat percentage were not statistically significant.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP1855090	Phenylpropanediol		1855-09-0	Price

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