Waste milk has traditionally been fed to calves as it can’t be sent for supply. But is this a good idea? DairyNZ senior scientist Jane Lacy-Hulbert investigates.
In fact, sometimes producing the extra milk can cost money, DairyNZ research scientist Dr Jane Kay told a Northland Dairy Development Trust field day at Wellsford.
“We know supplements equal more milk but does it equal more money? What we see from DairyBase is that if we increase the amount of supplementary feed coming into our system we don’t (necessarily) see an increase in profit; we see an increase in expenses,” she says.
The cost of supplementary feed is 40c/kgMS for every extra tonne of DM/cow.
“A lot of people will say ‘I am paying $330/tonne for my palm kernel so that makes it 30c/kg of dry matter; I am going to get an 80g response to that; a $6 payout means I will get an extra 48c back for that. That is profitable – that is worth doing’.
“But you must be really careful with those calculations.”
The cost of getting that supplement onfarm and feeding it out, including tractor, trailer, labour, fuel, repairs and maintenance on equipment, also needs to be counted.
“With any form of feeding supplement you’ve got associated costs. We also have hidden costs and an increase in both fixed costs and variable costs when you introduce supplements into the system.”
A study done in Ireland using data from 3000 farms looked at what was spent on feed and the total cost of the farm business.
“What they found is that the total expenses for the system increased by 1.53 times the cost of feed. For every euro they spent on their supplement or feed the total cost to the business increased by 1.53 euros.”
They found a similar result here in New Zealand. Here, for every $1 spent on imported feed, expenses increased by $1.68 in Waikato and $1.53 in Canterbury. The UK measure was 1.62.
“So for every $300 of palm kernel coming onto your farm, that could actually cost your business $450/t.”
Kay says with increased production you need to ask whether you are making money from milk or milk from money?
“Did the extra milk make us money or cost us money to make?”
An example is a farm doing 150,000kgMS: their total costs are $525,000, giving average costs of $3.50/kgMS. Under one scenario, if they increase production by 125,000kgMS by better use of pasture, etc, their total costs increase to $650,000, the average cost of production becomes $3.71/kgMS but the cost of the extra milk is $5/kgMS. They may still be making money.
But if the same farm brought in supplements and didn’t watch costs, their total costs could increase to $725,000 for the same increase in production. Their average cost would be $4.14/kgMS.
“Some people are quite happy with that … they believe they are still making money,” says Kay.
“But it has cost $200,000 to make the extra milk. So the cost of the extra milk is $8/kgMS.
Unless the payout is more than $8/kgMS they lost money making the extra milk, she says.
“We might still have a profitable business but we might have been better off not spending the extra money to make the extra milk. That extra production on our farm has decreased our profitability.
“You can get lost in the averages and you can think that is okay, we are still making money; but you could have made more money if you hadn’t made that extra milk.”
She cites the case of a South Waikato farm. The farmer now does just under $3/kgMS cost of production. When they looked over seven years his average cost of production was $4/kgMS.
But the marginal milk he was making was costing him an average $5.60/kgMS. One year he had an average cost of production of $5/kgMS but the marginal milk was costing him $10.75/kgMS to make. Another year his average cost was $5.70/kgMS and in May that year the extra milk was costing him $17/kgMS.
He was doing a lot of production but sacrificing profitability for it, says Kay. He says it has been a good turnaround: he is doing less production than four or five years ago but the money is coming in.
Kay was asked what her advice was for those who had already spent money on a feed pad or wagon. She says the farmer in question now used the feed pad as a stand-off pad and had sold his wagon. You need to ask the questions before spending on capital items.
“But if you do have it you are not going to fix a bad decision by making more and more bad decisions.
“I have talked to a lot of farmers who have that infrastructure there and they don’t use it. I think [the idea is to be] able to make those decisions and being able to have a system where you take supplement out and put it in when you need to.”
Look at this!
- Reduced expenses are associated with increased profit
- Production is not associated with profit
- Profit increases by $300/ha with every extra tDM/ha pasture and crop eaten
- Expenses increased by 1.5 times the cost of imported feed.
- Beware of averages: calculate the cost of extra milk on your farm.