Answer: Unfortunately, I am not a veterinary toxicologist. I think you, your neighbor and the cattle would be best served by checking with a local veterinarian who specializes in cattle and locally accessible plants that may be harmful to them. This way you will be assured of receiving expert on-site advice and perhaps the cattle will be ultimately either found healthy or protected from whatever is making them ill -- be it a plant or some other source altogether. I'm sorry I can't be of more assistance.
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