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32 Cards in this Set

  • Front
  • Back
Two genera of broomweeds
- Xanthocephalum
- Gutierrezia
Which broomweed genera is nontoxic?
Xanthocephalum
Toxic agent of Gutierrezia spp.
Triterpenoid saponin
What does the toxic agent of Gutierrezia spp. do?
Inhibits prostaglandins
When does Gutierrezia spp. usually cause abortions?
Third trimester
- Can abort at any stage though
Primary species affected by Gutierrezia spp.
Cattle
4 species affected by Gutierrezia spp.
- Cattle
- Sheep
- Goats
- Pigs
Tx of Gutierrezia spp.
None available
Important plant that causes abortion in TX
Gutierrezia spp.
When does Iva spp. cause abortions?
Any trimester
Primary species affected by Iva spp.
Sheep
What are most teratogenic plants involved with ultimately?
Organogenesis
4 teratogenic plant genera
- Astragalus
- Conium
- Lupinus
- Veratrum
Toxic agent of Astragalus
Alkaloid
TA of Conium spp.
Alkaloid
In the way of teratogenesis, what does Conium spp. cause? (2)
- Cleft palate
- Arthrogryposis
Two species affected by Conium spp.
- Pigs
- Cattle
Primary species affected by Lupinus spp.
Cattle
Which species is resistant to teratogenic effects of Lupinus spp. but may display neurologic effects instead?
Sheep
What is the teratogen found in Lupinus spp.?
Anagyrine
What plant genera is teratogenic when eaten in the day 40 - 70 of pregnancy?
Lupinus spp.
What condition does Lupinus spp. cause?
'Crooked Calves'
What plant causes Crooked Calves?
Lupinus spp.
TA of Veratrum spp.
Alkaloids
What semester of pregnancy is the most important in terms of teratogenesis?
First due to organogenesis
What plant genera interferes with cartilage metabolism?
Veratrum spp.
What plant genus causes a cyclopean deformation?
Veratrum spp.
When does Veratrum spp. cause cyclopean deformation?
When ingested on Day 14 of pregnancy
What are lambs affected by Veratrum spp. on day 14 called?
'Monkey Faced' lambs
Two conditions caused by Veratrum spp. eaten on day 28
- Shortened metacarpals and metatarsals
- Tracheal collapse
Primary species affected by Veratrum spp.
Sheep
Prevention of Veratrum spp. intoxication
Breed sheep after frost