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