Poisonous Plants to Horse

1
Poisonous Plants to Horse

• The purpose of this presentation is to inform
  readers about poisonous plants to horses in an
  interactive way.
• It may be helpful for the participant to read the
  document of poisonous plants before continuing on
  with the presentation
• A link to the document is provided here
• Or to continue on with the presentation click on
  the arrow

2
Test your knowledge about poisonous plants to
horses

• Click on the text or the picture to select your
  answer
• You are allowed to go back and try again on
  questions with multiple choices
• Or you can click on the arrow button to continue
  with the quiz

3
Which plant is poisonous to horses
Courtesy of Cornell University
4
YesNightshade affects the nervous system and the
gastrointestinal system
Courtesy of Cornell University
For more information on Nightshade click here
5
Sorry the rose is not a poisonous plant to horses
For more information on poisonous plants click
here
6
What is the name of this plant

• Is it
• Sorghum
• Bracken fern
• Yew
• Red maple

Courtesy of Cornell University
7
Sorry

• Incorrect sorghum is a grass plant commonly found
  in range lands

For more information Sorghum click here
8
Correct

• Bracken fern is poisonous to horses
• Bracken fern is not usually eaten unless other
  forage is unavailable

For more information Bracken fern click here
9
Nope

• The Yew is an evergreen plant with red seeds
• To calculate how much Yew a horse would need to
  eat to become poisoned click here

For more information on the yew click here
10
Wrong

• The red maple has three large points on the
  leaves.

For more information on the Maple tree click here
11
A horse weighs 1200 lbs. How much Yellow Star
Thistle must he eat to be poisoned?

• To calculate click here
• Is it
• 600
• 300
• 720

12
No

• A horse would need to weigh 1000 lbs for 600 lbs
  to become poisonous to horses.

13
No

• A horse would need to weigh 500 lbs to be
  poisoned by 300 lbs of yellow star thistle

14
Yes

• A horse weighing 1200 lbs can be poisoned by
  eating 720 lbs of yellow star thistle.
• For a horse to eat this much they must be
  deprived of other feed stuffs for a long amount
  of time, usually months.

15
These plants are the three most poisonous to
horses what are they
Courtesy of Cornell University
Courtesy of Cornell University
Courtesy of King County
a) Pine Tree, Oak and Yellow Star Thistle b) Yew,
Oak and Yellow Star Thistle c) Yew, Oak and
Ragwort d) Rhododendron, Horse tail, and Night
shade
16
Incorrect

• Pine trees and Yellow Star Thistles are not
  considered to be the most poisonous plants to
  horses
• However Oak is one of the most poisonous plants
  to horses

For more information on Yellow Star Thistle and
Oak trees click here
17
Incorrect

• Yellow Star Thistle is not considered one of the
  most poisonous plants to horses
• Although Yew and Oak are

For more information on Yellow Star Thistle and
Oak trees and yew click here
18
Correct

• Yew, Oak trees and Ragwort are considered to be
  the three most poisonous plants to horses.
• There is no know cures for these plant and once
  symptoms appear it is usually too late for
  treatment

For more information on Yew Oak trees and Ragwort
click here
19
Incorrect

• Although Rhododendron, Horsetail and Nightshade
  are poisonous plants to horses they are not
  considered the most poisonous plants to horses.

For more information on Rhododendron, Horsetail,
and Nightshade click here
20
White Camas is more prevalent in

• a) Moist soils
• b) Woodlands
• c) Grasslands
• d) All of the above

21
No

• White camas is found in moist soils but is also
  found in other areas

For more information on White camas click here
22
No

• White camas is found in woodlands but is also
  found in other habitats

For more information on White camas click here
23
No

• Although White camas is found in grasslands it is
  also found in other areas

For more information on White camas click here
24
Correct

• White camas is more prevalent in areas with moist
  soils, woodlands, and or grasslands

For more information on White camas click here
25
How much fiddleneck would a 1200 lb horse have to
eat to become poisonedto calculate click here

• a) 60lbs
• b) 20lbs
• c) 30lbs
• d) 40lbs

26
Correct

• A 1200 lb horse would have to eat 60lbs of
  fiddleneck to become poisoned
• Fiddleneck contains pyrrolizidine alkaloids that
  affects the liver
• Horses that have consumed this much show signs of
  depression and loss of apatite

For more information on fiddleneck click here
27
Incorrect

• 20lbs would not be a significant amount to poison
  a 1200lb horse
• However 20lbs would be enough to poison a 400lb
  pony or very young horse

For more information on fiddleneck click here
28
Incorrect

• 30lbs is not enough to poison a 1200lb horse
• A horse this size would need to eat double the
  amount to become poisoned

For more information on fiddleneck click here
29
Incorrect

• A horse would need to weigh 800lbs to be effected
  by 40lbs of fiddleneck

For more information on fiddleneck click here
30
This plant has similar symptoms of Yellow Star
Thistleis it

• a) African rue
• b) Russian Knapweed
• c) Hounds tongue

Courtesy of ASPCA
31
Incorrect

• Horses that eat African rue have symptoms of
  weakness of the hindquarters, anorexia and
  listlessness

For more information on African rue click here
32
Correct

• Russian Knapweed poisoning affects the brain
  resulting in the inability to chew food
• To calculate how much a horse would
• need to eat to become poisoned click here

For more information on Russian Knapweed click
here
33
Incorrect

• Symptoms of Hounds tongue poisoning include
  increase in heart rate and respiration as well as
  colic and wandering

For more information on Hounds Tongue click here
34
What is the name of this plant is it

• a) Hounds tongue
• b) Vetch
• c) Milkweed

Courtesy of Cornell University
35
No

• Hounds tongue is a tall plant with alternating
  leave going up the steam

For more information on Hounds Tongue click here
36
Correct

• Vetch has very thin stalks and produces flowers
  in an array of colors

For more information on Vetch click here
37
Incorrect

• Milkweed is a tall stocky plant with seeds that
  have hairy tuffs

For more information on Milkweed click here
38
The End

• I hope you have learned something about poisonous
  plants to horses
• If you have not read the word document you can
  click here
• For a work cited page click here