Conditions when likely to occur:
History of very limited superphosphate application on soils naturally deficient in phosphorus. Lactating cows and young growing cattle.
Occurs if cattle consume <0.5g P/kg dry matter.
Clinical signs: Pica (eating bones and other rubbish), poor growth, soft bones and bone fractures, infertility, post calving red water.
Management strategy to prevent disease:
Best long-term solution is to top-dress pasture with superphosphate.
Lick with dicalcium phosphate mix with salt and molasses (care with superphosphate licks because of risk of fluoride toxicity).
Sodium acid phosphate injection for acute deficiency.