What can happen when cattle eat toxic Johnsongrass?

Rosslyn Biggs, DVM, gives a quick overview of the potentially deadly effects of prussic acid.
If livestock eat Johnsongrass with a fatal amount of prussic acid toxicity, their blood becomes filled with oxygen that cannot be absorbed by cells. Toxicity levels are highest after drought and frost.
extension.okstate.edu/article...
Learn more in this OSU Extension fact sheet: extension.okstate.edu/fact-sh...
Contact your local OSU Extension county office for forage testing: extension.okstate.edu/county
SUNUP is a weekly production agriculture show that airs Saturdays at 7:30 a.m. and Sundays at 6 a.m. on OETA-TV (PBS) all across Oklahoma. The show is produced by the Division of Agricultural Sciences and Natural Resources at Oklahoma State University, Copyright 2022.

[@DoubleSpurRanch]

Is it less likely to be toxic if it s mature ad very tall?

[@SUNUPTV]

No. It still needs to be tested, especially if you're in area that had drought then sudden growth.

[@GuantanamoBayBarbie2]

@@SUNUPTV that's exactly what happened to this bison rancher in Oklahoma: czcams.com/video/uJq8CFdY-bU/video.html

[@mtower235]

So if you hay it does it make it safer?

[@SUNUPTV]

No. It still needs to be tested for toxins.

[@mtower235]

@@SUNUPTV k thx

[@GuantanamoBayBarbie2]

A fellow raising bison in Oklahoma lost a yearling to Johnson grass just recently. This is the video he made about it:
czcams.com/video/uJq8CFdY-bU/video.html
Edit: I just now realized you are IN Oklahoma. I live near Corvallis Oregon, & in Beaver country OSU stands for Oregon State University! Lol. 😁