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Ragwort is of concern to people who keep horses and cattle. [23] [24] In areas of the world where ragwort is a native plant, such as Britain and continental Europe, documented cases of proven poisoning are rare. [25] Horses do not normally eat fresh ragwort due to its taste.
Horses do not normally eat fresh ragwort due to its bitter taste, however it loses this taste when dried, and becomes dangerous in hay. The result, if sufficient quantity is consumed, can be irreversible cirrhosis of the liver. Signs that a horse has been poisoned include yellow mucous membranes, depression, and lack of coordination.
Horses seem to be particularly vulnerable to senecionine poisoning through ingestion of ragwort. Symptoms of poisoning in horses (known as "horse staggers") include nervousness, yawning, fatigue, and unsteady gait. [17] Some species have evolved to leverage senecionine for their own benefit.
Ergotism (pron. / ˈ ɜːr ɡ ə t ˌ ɪ z ə m / UR-gət-iz-əm) is the effect of long-term ergot poisoning, traditionally due to the ingestion of the alkaloids produced by the Claviceps purpurea fungus—from the Latin clava "club" or clavus "nail" and -ceps for "head", i.e. the purple club-headed fungus—that infects rye and other cereals, and more recently by the action of a number of ...
Signs of reaction can include itching, burning, and swelling of the mouth and throat, runny eyes and nose, hives, and, less commonly, vomiting, diarrhea, asthma, and anaphylaxis. These symptoms are due to the abnormal increase of IgE antibodies which attach to a type of immune cell called mast cells.
Senecio madagascariensis contains pyrrolizidine alkaloids and is poisonous. [10] Horses, cattle, and other livestock are at risk. Symptoms of poisoning from fireweed include gradual weight loss, jaundice, fluid in the lungs, blindness, sudden death without any other indications, aimless wandering, muscular coordination, twitching of the head muscles, abdominal straining, rectal prolapse, and ...
These are the signs of carbon monoxide poisoning. Michelle Marchante. June 4, 2024 at 7:57 AM. Carbon monoxide is a dangerous and silent killer. ... Symptoms of carbon monoxide poisoning.
The bright colours of both the larvae and the moths act as warning signs, so they are seldom eaten by predators. An exception is among different species of cuckoo which eat hairy and poisonous caterpillars including cinnabar moth larvae. [3] Females can lay up to 300 eggs, usually in batches of 30 to 60 on the underside of ragwort leaves.