Automated Milking and Labour on a Family Dairy Farm
A 320-cow pasture-based dairy farm is considering a voluntary automatic milking system (robotic units) to replace a 20-a-side herringbone shed. The family employs two full-time staff and the owner works 60 hours per week. Capital cost is $1.8 million; the farm currently produces 2.1 million litres annually at a milk price of $0.65/L. Robotic milking typically suits smaller herds and requires cows to voluntary present, which can be difficult on pasture-based systems with long walking distances. The bank requires a debt-servicing ratio below 0.35.
1. Identify the key technical and economic risks of adopting robotic milking on this pasture-based farm.
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Technical risk centres on voluntary cow traffic: on pasture, cows must walk to the shed and choose to be milked, and long distances or poor laneways reduce presentation rates, which lowers milkings per cow per day and total yield. A 320-cow herd is at the upper end for robotic systems, so unit capacity and cow flow become constraints. Economic risk is substantial: $1.8 million in capital against a farm generating about $1.365 million in milk revenue means a large debt load, and the bank's 0.35 debt-servicing ratio must be tested against the new repayments. The system also changes labour - it may reduce physical milking labour but increases management and technical support demands, and the family's 60-hour week may not fall as much as expected if cows require fetching. The risk is that capital is committed before cow-flow performance is proven.
2. Recommend how the family should proceed, including what evidence they should gather first.
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Proceed cautiously and gather evidence before committing. First, model the debt-servicing ratio with the new repayments at the current milk price and at a stress-tested lower price; if the ratio exceeds 0.35, the proposal fails the bank's test regardless of labour benefits. Second, trial cow flow: measure walking distances and laneway condition, and consider a partial or seasonal robotic installation rather than full replacement. Third, quantify the labour actually saved - the family should record where the 60 hours go to see whether robotics removes that work or merely shifts it. Fourth, seek independent advice on whether a 320-cow pasture herd is within the proven range for the chosen system. The decision should be deferred until the debt test and cow-flow evidence are in hand.
3. The owner argues that labour savings alone justify the investment. Evaluate this argument.
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Labour savings are real but insufficient on their own. The capital cost of $1.8 million must be serviced from the milk cheque, and a 0.35 debt-servicing ratio is a hard constraint. If labour savings do not translate into reduced wages or increased production, they are a quality-of-life benefit rather than a cash benefit, and banks do not service debt with lifestyle. The argument also assumes the labour is fully removed, but robotic systems on pasture often require staff to fetch cows and manage the technology, so net savings may be modest. The sound evaluation weighs cash savings, production effects, and debt capacity together. If the numbers do not clear the ratio, the family should consider alternatives such as a new conventional shed or partial automation, which may capture much of the labour benefit at lower capital risk.