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Hepatotoxic Plants that Poison Livestock
Michael J Clayton1, T Zane Davis1, Edward L Knoppel1
1USDA/ARS Poisonous Plant Research Laboratory, 1150 East 1400 North, Logan, UT 84341, USA.
This article details clinical signs, lab changes, and necropsy findings in livestock poisoned by hepatotoxic plants, focusing on North American toxins like pyrrolizidine alkaloids.
Area of Science:
- Veterinary Toxicology
- Hepatotoxicology
- Clinical Pathology
Background:
- The liver is a primary target organ for ingested toxicants in livestock.
- Plant-derived hepatotoxins pose a significant threat to animal health worldwide.
- Pyrrolizidine alkaloids are a major concern due to their prevalence and impact.
Purpose of the Study:
- To familiarize veterinarians with the diagnosis of hepatotoxic plant poisoning in livestock.
- To highlight common clinical signs, serum biochemistry, and necropsy findings.
- To emphasize the importance of pyrrolizidine alkaloids and related diagnostic principles.
Main Methods:
- Review of clinical signs and field information in livestock poisonings.
- Analysis of serum biochemistry changes associated with hepatotoxic plant ingestion.
- Examination of necropsy findings in affected animals.
- Detailed discussion of pyrrolizidine alkaloid toxicosis.
Main Results:
- Identification of key clinical manifestations and diagnostic indicators for hepatotoxic plant poisoning.
- Characterization of specific serum biochemistry alterations.
- Correlation of necropsy findings with plant toxin exposure.
- Emphasis on pyrrolizidine alkaloids as a critical toxin group.
Conclusions:
- Veterinarians can improve diagnosis of livestock hepatotoxic plant poisoning through understanding clinical signs, biochemistry, and necropsy.
- Pyrrolizidine alkaloids represent a significant global threat, and diagnostic approaches are broadly applicable.
- Effective management relies on recognizing and addressing plant-induced liver damage.
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