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Detection of herbicides in the urine of pet dogs following home l

Posted by henry_kuska z5 OH ( on
Tue, Apr 23, 13 at 11:52

This is the time that many rose gardners are also treating their lawns for weeds with weed and feed type products. Recently there has been a discussion of these products causing Rose Rosette Virus type symptoms by unintended "spread" - drift.

There are other considerations:
Exposure to herbicide-treated lawns has been associated with significantly higher bladder cancer risk in dogs. This work was performed to further characterize lawn chemical exposures in dogs, and to determine environmental factors associated with chemical residence time on grass. In addition to concern for canine health, a strong justification for the work was that dogs may serve as sentinels for potentially harmful environmental exposures in humans. Experimentally, herbicides [2,4-dichlorophenoxyacetic acid (2,4-D), 4-chloro-2-methylphenoxypropionic acid (MCPP), dicamba] were applied to grass plots under different conditions (e.g., green, dry brown, wet, and recently mowed grass). Chemicals in dislodgeable residues were measured by LC-MS at 0.17, 1, 24, 48, 72 h post treatment. In a separate study, 2,4-D, MCPP, and dithiopyr concentrations were measured in the urine of dogs and in dislodgeable grass residues in households that applied or did not apply chemicals in the preceding 48 h. Chemicals were measured at 0, 24, and 48 h post application in treated households and at time 0 in untreated control households. Residence times of 2,4-D, MCPP, and dicamba were significantly prolonged (P < 0.05) on dry brown grass compared to green grass. Chemicals were detected in the urine of dogs in 14 of 25 households before lawn treatment, in 19 of 25 households after lawn treatment, and in 4 of 8 untreated households. Chemicals were commonly detected in grass residues from treated lawns, and from untreated lawns suggesting chemical drift from nearby treated areas. Thus dogs could be exposed to chemicals through contact with their own lawn (treated or contaminated through drift) or through contact with other grassy areas if they travel. The length of time to restrict a dog's access to treated lawns following treatment remains to be defined. Further study is indicated to assess the risks of herbicide exposure in humans and dogs."

Here is a link that might be useful: link for above

Follow-Up Postings:

RE: Detection of herbicides in the urine of pet dogs following ho

Title: "Oxidative stress in ventral prostate, ovary, and breast by 2,4-dichlorophenoxyacetic acid in pre- and postnatal exposed rats"


Here is a link that might be useful: 2,4-D effects on rats full 2013 paper

RE: Detection of herbicides in the urine of pet dogs following ho

"Title:Assessing eco-toxicological effects of industrial 2,4-D acid iso-octylester herbicide on rat pancreas and liver"

From last part of abstract: "Our observations indicated that this herbicide potentially is a cancer initiator."


Here is a link that might be useful: Link for 2013 scientific paper

RE: Detection of herbicides in the urine of pet dogs following ho

That's very sad. What is being done to our planet so people don't have dig out weeds?

RE: Detection of herbicides in the urine of pet dogs following ho

  • Posted by minflick 9b/7, Boulder Creek, (My Page) on
    Wed, Apr 24, 13 at 0:48

And if it has that ugly an effect, that quickly, on a short lived dog, what on earth is it doing to us, with our longer life spans. This is NOT good...

RE: Detection of herbicides in the urine of pet dogs following ho

2,4-D is very dangerous stuff. It shouldn't be on the market at all. Here's a little of the info from Beyond Pesticides:

'Beyond Pesticides fully supports the cancellation of this dangerous pesticide which has been associated with a host of adverse human impacts, such as non-Hodgkin’s lymphoma, endocrine disruption, reproductive and developmental effects, as well as water contamination and toxicity to aquatic organisms. The highly toxic chemical can be replaced by cost-competitive and effective management practices widely used in organic agriculture and lawn care. '

Here is a link that might be useful: Beyond Pesticides

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