Kochia scoparia poisoning in cattle

Area of Science:

• Veterinary Toxicology
• Ruminant Nutrition
• Environmental Chemistry

Background:

• High-sulfate water and specific plant forage can pose health risks to livestock.
• Kochia scoparia (burningbush) is a common forage in arid regions, with potential toxicological concerns.
• Environmental factors, such as rainfall, can influence plant composition and livestock health.

Purpose of the Study:

• To investigate the toxicological effects of high-sulfate water and Kochia scoparia consumption in cattle.
• To identify clinical manifestations and biochemical changes associated with this dietary combination.
• To explore the potential role of plant-associated factors, including thiamin degradation, in cattle toxicosis.

Main Methods:

• Periodic serum chemical profiling of cattle grazing on high-sulfate water and Kochia scoparia.
• Monitoring of clinical signs, including photosensitization and neurological disorders.
• Analysis of plant material for potential toxic principles, specifically thiamin-destructive factors.

Main Results:

• Elevated serum glutamic oxaloacetic transaminase, sorbitol dehydrogenase, and bilirubin indicated chronic liver toxicosis.
• Clinical signs, primarily photosensitization and polioencephalomalacia, were observed in affected cattle.
• Toxicosis severity correlated with rainfall, coinciding with accelerated plant growth and development stages.

Conclusions:

• Combined consumption of high-sulfate water and Kochia scoparia induces chronic toxicosis in cattle.
• Polioencephalomalacia and photosensitization are key clinical presentations of this toxicosis.
• Kochia scoparia appears to contain a thiamin-destructive principle, contributing to the observed pathology.