Expert Advice

Dairy Animal Services

Subclinical hypocalcaemia in Dairy cows

Did you know that a 550kg dairy cow normally has a blood calcium level of around 3 grams? Once she calves, in lactation she requires approximately 23 grams per day! Recent studies in NZ have shown the average herd-level prevalence of subclinical milk fever is…

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Immunity and trace elements in newborn calves

Calves get their antibodies (that set up their immune system) from the cow via colostrum. This is termed “Passive transfer”. You may hear the term FPT or failure of passive transfer used. This happens when the calves don’t get enough colostrum, quickly enough after birth.…

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