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Enter the number of milking ewes, the average milk per ewe per day, the forecast period in days and a loss allowance for milk withheld, spilled or otherwise unsaleable. The calculator gives daily milk, gross milk for the period, saleable milk after loss, and saleable milk per ewe. Results are planning estimates, not a guarantee of production.
Daily milk equals milking ewes multiplied by average milk per ewe per day. Gross milk equals daily milk multiplied by days, and saleable milk equals gross milk after the loss allowance. Fifty ewes averaging 1.00 litre per day for 120 days produce 50.00 litres per day, 6000.00 litres gross and 5850.00 litres saleable at 2.5 percent loss, which is 117.00 litres saleable per ewe.
Dairy ewes yield far less than cows: a good dairy ewe may give 1 to 2 litres per day, while many flocks average well under 1 litre per day over a full lactation. Breeds such as Lacaune and East Friesian are bred for milk, while meat breeds give little saleable milk after lambs are fed. Use a measured flock average from your own records, because breed and system differences are large.
Sheep lactation is shorter than cow lactation, often about 120 to 180 days of milking after lambs are weaned, with peak yield early and a steady fall after that. A 120 day forecast therefore suits many dairy sheep flocks, while longer forecasts need a falling average, not a flat peak figure. Dry ewes off in good condition so the next lambing starts well.
Twenty ewes averaging 0.50 litres per day for 100 days produce 10.00 litres per day, 1000.00 litres gross and, with no loss, 1000.00 litres saleable, which is 50.00 litres per ewe. Sheep milk is rich in solids, with about twice the solids of cow milk, so cheese yield per litre is higher even though daily litres are lower. Plan cheese making from saleable litres, not gross litres.
A dairy ewe may give 1 to 2 litres per day at good levels, while many flocks average under 1 litre per day over a full lactation. Meat breed ewes give little saleable milk after lambs are fed.
Multiply milking ewes by average milk per ewe per day and by days, then subtract a loss allowance. Fifty ewes at 1.00 litre for 120 days give 5850.00 litres saleable at 2.5 percent loss.
Often about 120 to 180 days of milking after lambs are weaned, with peak yield early and a steady fall after that.
Lacaune and East Friesian are well known dairy breeds. Local and meat breeds usually give far less saleable milk.
Yes, sheep milk is rich in solids, about twice the solids of cow milk, so cheese yield per litre is higher even though daily litres are lower.
It depends on ewes and yield: 50 ewes at 1.00 litre per day produce about 1462.50 litres saleable in 30 days at 2.5 percent loss.
No, this is a planning estimate from averages you enter. Real production changes with breed, feed, health, lambing and stage of lactation.
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