Repro Toxicants and Induced Abortion

Question 1

Which teratogen causes Crooked Calf Syndrome
{multiple congenital contracture}?

Answer 1

Poison Hemlock

Conium maculatum
{first green forage to appear; Spring time!}

ingestion: 50-75 days in gestation

Question 2

What type of toxicant are lupines & what are the 2 associated toxins?

Answer 2

Teratogens:

1. Anagyrine {Lupinus caudatus}
2. Ammodendrine {Lupinus formosus}

Question 3

What can ingestion of lupines result in?

Answer 3

severe limb & spinal deformities;
cleft palate

ingestion: 40-70 days

Question 4

What is the most frequent diagnosis of viral abortion?

Answer 4

Infectious Bovine Rhinotracheitis

Question 5

Ingestion of which teratogen causes neurologic signs, abortion, and fetal abnormalities {hydrops, arthrogryposis}?

​What is the associated toxin?

Answer 5

LOCOWEED:
Astragalus & Oxytropis spp.

Swainsonine

Question 6

Which plant causes hemorrhagic placentitis, vasoconstriction at caruncles, and has up to 50% abortion rate in cattle grazing it?

Answer 6

Ponderosa Pine:
Pinus ponderosa

via Isocupressic acid