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COWS-fed-barely-sprouting-fodders, page : 18
ِAlso see the section of poisoning: toxic plants
Several plants are poisonous. Check with the vet to see which plants are liable to grow in your area. Common poisonous plants are those such as hemlock and larkspur and may grow in wet areas along a ditch or stream.
Poison and water hemlock are not only poisonous to cattle but also to humans – do not try to pick hemlock (hemlock has a white flower)!
Burdock and cockleburr are not poisonous, however, they produce burrs than can cause serious eye problems in cattle.
TIME OF GRAZING
Do not put cattle on pastures too early in the spring before they have had a chance to grow, this is because new growth requires energy reserves in the roots. If you have bought cattle in the spring then keep them in the corral until the pasture is established.
Divide the pasture into sections. Graze each section for only 7 to 10 days and then allow to regrow for 25 – 30 days, irrigate it according to lack of rainfall.
If you intend to use the same pasture the following year make sure you do not let it become over grazed that is, before the plants are grazed too short.
FORAGE/ROUGHAGE FOR CATTLE
In areas where rainfall is low consider using the following on account of their tolerance of heat and drought, when in doubt ask your veterinarian:
Switchgrass
Bluestems