Adverse Events: Feeding milk
to livestock

If at all possible, feed the surplus milk to livestock. Nutritionally, milk is low in dry matter content (i.e. approximately 13%), and is high in energy (i.e. 20 to 23 MJME per kg of DM), protein and fat.


Calves can consume between 8 and 12 litres of whole milk per day before weaning. After weaning, up to 4 litres per day can replace 1 kg of concentrate feed.However, the use of milk should be limited to minimise the risk of digestive disorders. It should be introduced to the calves slowly, and be supplemented with digestible fibre-based feed to encourage proper rumen function. Ad-lib access to hay is advisable while milk is being fed.

Dairy cows can be fed up to 10 litres in a day.The milk could be fed via water troughs or spread on silage if it is suitably contained.The milk must be fit for purpose (i.e. must not contain antibiotics).

Milk may also be transported to neighbours with piggeries or commercial calf rearers.

Milk is best fed consistently fresh or consistently sour to dairying stock. Souring in a storage facility can be prevented for up to one week by adding 1 litre of 40% formaldehyde solution (i.e. commercial formalin) to 1000 litres of milk. At this concentration it is safe to feed the milk over the week. Citric acid or acetic acid may also be added to milk to prevent souring. Commercial yoghurt starters can also be used to make a coagulated yoghurt from the milk, and the yoghurt fed to stock. If in any doubt about the feeding of milk to stock, consult a veterinarian.

 
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