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Trees & Plants that can kill horses

Feeding Horses Thread, Trees & Plants that can kill horses in Horses and Ponies; In light of the horses that have died over east I thought I would post some research that I have ...
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Old 10-10-2011, 10:06 AM   #1
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Exclamation Trees & Plants that can kill horses

In light of the horses that have died over east I thought I would post some research that I have done on what plants are toxic to horses, as it looks like these horses where killed as the result of Cyanide Poisoning, from the Aus Native wild peach, other wise known as the Quandong.

Cyanide poisoning results in hypoxia (deficiency of oxygen reaching the tissues). The first symptoms appear within a few minutes following consumption of plant material. Affected animals exhibit excitement, incoordination, convulsions, rapid and labored breathing, bloating, and coma. Death can occur in less than an hour due to internal asphyxiation

Treatment:
General: remove from source
Specific: sodium nitrite at 10 to 20 mg/kg with 500 mg/kg sodium thiosulfate as needed. The treatment is directed at breaking the cyanide ? cytochrome bond with the nitrite forming methemoglobin. Methemoglobin has a greater affinity for cyanide than does cytochrome oxidase, so it strips cyanide from the enzyme. The thiosulfate then reacts with the cyanide via the enzyme rhodanase forming thiocyanate which is readily excreted in the urine.

But as there usually dead with in the hour of eating the stuff, saving them is near impossible

This article is not Aus based but still interesting to read Prussic Acid Poisoning


http://www.equineer.com/wp-content/u...-that-Kill.pdf

This is probably the best guide I have found..
http://www.qldhorsecouncil.com/QHC%2...ld%20guide.pdf

You can also buy a hard copy of this https://rirdc.infoservices.com.au/items/06-048

General Garden plants that are toxic, and not just to horses
http://www.agric.wa.gov.au/objtwr/im...mfulplants.pdf

A Data base for toxic weeds that horse links for Cats, Dogs, Horses, Humans,
Pigs, Poultry, Ruminants Australian Weeds and Livestock: Data

Weed Identification tool, this is fantastic Weeds Australia - Weed Identification
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Old 10-10-2011, 10:21 AM   #2
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thanks for that info sharaway..I'll read it when I have 10 to do so.

Can or have you listed WA ones?

Cheers
Lee
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Old 10-10-2011, 10:22 AM   #3
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Adding to this a local plant that I lost 2 Ewe hoggest to last week. It will kill any stock that graze it & are then put under stress afterwards. We call our local plant Heart-Leaf poison.
We pull it up on one small part of our farm about this time every year & it is known to grow along the roadverges & native bush.

Box poisoning is the term sometimes used for poisoning by any one of over 30 species of
Gastrolobium and Oxylobium, most of which occur in the south-west of WA. The plants
contain the highly toxic poison, fluoroacetate (‘1080’), and may cause deaths at any time of
year; however the succulent growth that appears after summer rain is particularly attractive
to stock. Farmers should familiarise themselves with the toxic species that occur in their
area. In the eastern wheatbelt the plants usually responsible for “box poisoning” include Box
Poison and Narrow Leaf Poison while York Road and Box Poison are common in western
districts. Prickly Poison is usually low in toxin, but deaths have been seen with new growth in
summer. Stirling Range Poison and Heartleaf Poison are common species in southern and
western areas of the state.

When poisoning occurs in summer it often follows rain, maybe because of the appearance of
fresh new shoots on the shrubs or because the sheep are hungry and seeking roughage.
Poisoned sheep die quickly and with little struggling. Their carcasses putrefy rapidly and
there is often bloody froth at the nostrils. If poison is suspected do not hustle the sheep off
the paddock as this may precipitate more deaths.
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Old 10-10-2011, 10:24 AM   #4
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Toxic to Horses
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Old 10-10-2011, 10:28 AM   #5
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This is probably the best guide I have found..
http://www.qldhorsecouncil.com/QHC%2...ld%20guide.pdf


This one is Aus wide, so includes WA
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Old 10-10-2011, 10:45 AM   #6
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Here's a few I know we had to not use when looking for trees for our laneways:

Many fruit trees like ornamental pears
Avocado trees
Black walnut trees
Anything maple
Oak trees

All the above can have something in their leaves when eaten can kill horses
The oak trees acorns can kill too

Trees that were ok and we used were eucalypts, london plane trees and paulownias.
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Old 10-10-2011, 10:50 AM   #7
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Quote:
Originally Posted by Sharaway View Post
This is probably the best guide I have found..
http://www.qldhorsecouncil.com/QHC%2...ld%20guide.pdf


This one is Aus wide, so includes WA
It's telling me that it's a bad url... Will check out the other sites though.

Is this what happened to those QHs in Qld?

I was talking to a farmer out here. We get Cape Tulip bad! He said that if you buy a mob of sheep from down south where they aren't exposed to it you're bound to lose a few because they have no idea what it is, where as lambs bred here seem to just "know" that it's no good...
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Old 10-10-2011, 11:05 AM   #8
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Great idea sharaway,alot of people have no idea,including me
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Old 10-10-2011, 11:06 AM   #9
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Quote:
Originally Posted by Pinkie_Pie View Post
It's telling me that it's a bad url... Will check out the other sites though.

Is this what happened to those QHs in Qld?

I was talking to a farmer out here. We get Cape Tulip bad! He said that if you buy a mob of sheep from down south where they aren't exposed to it you're bound to lose a few because they have no idea what it is, where as lambs bred here seem to just "know" that it's no good...
Pinky, go here https://rirdc.infoservices.com.au/items/06-048

you can download the PDF from there
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Old 10-10-2011, 11:09 AM   #10
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Quote:
Originally Posted by feather feet View Post
Great idea sharaway,alot of people have no idea,including me
Same here mate, who new about Quondongs for full fat soy?
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