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Grass tetany could be a greater problem than normal in beef cow herds in the late winter and spring of 1978 suggests Virginia Tech Extension specialist John Gerken.
He said there have been a number of reports of grass tetany cases in fall-calving herds late in 1977 due in part, perhaps, to the lush fall pasture growth that occurred once Virginia cattle producing areas received rain that relieved summer-long drought conditions.
Drought conditions were widespread in Virginia in 1977 and consequently hay supplies are very short. Many cows are being wintered on less than normal amounts of hay with the difference being made up by feeding concentrates, crop residues, broiler litter or a variety of other feeds.
“This situation could lead to a greater than normal incidence of grass tetany,” said Gerken “particularly if forage quality is poor and no magnesium supplementation is provided.”
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