Lantana plants have troterpenoid constituents, or pentacyclic triterpenes, called lantadenes (A & B), which are hepatogenic photosensitizers. These chemicals are concentrated in the leaves and in unripe and ripe fruits. During the dry season here in the Philippines, when there is scarcity of forage grasses, cattle resort to feeding on the dominant lantana weed resulting to poisoning and eventually, death.
|L. camara uploaded from Wikimedia|
Here are some pictures cattle poisoned with Lantana in South Africa. These photos are courtesy of Prof. CJ Botha from the Faculty of Veterinary Science of University of Pretoria. These are cattle that have been poisoned with the weed after prolonged feeding.
How about here in the Philippines? Do you notice effect on cattle such as this?
Lantana camara. Global Invasive Species Database [Accessed 140529].
Asia-Pacific Forest Ivasive Species Network. Lantana camara. Invasive Species Fact Sheet [Accessed 140805].
Rosacia, W.Z., Achivar. A.N., Avanzado, M.B. 2004. Lantana and hagonoy: poisonous weeds prominent in rangeland and grassland areas. Research Information Series 16(2): 6 pp.