increase font size
Milk must be down to temperature before the tanker comes to collect it.
Milk cooling affects milk quality: the faster milk is cooled after milking, the better its quality at collection.
According to DairyNZ, choosing the right cooling system for the farm means lower energy costs and lower risk of penalties due to milk temperature.
Milk cooling accounts for about 30% of the total energy costs of operating a dairy; energy demand and farm dairy operating costs can be reduced using different options that involve heat recovery from a cooling system.
Raw milk grows bacteria rapidly above 7°C. Meeting the new milk cooling standards, which took effect for all farms on June 1 this year, may require changes for some farm systems.
The MPI New Zealand Code of Practice for the design and operation of farm dairies has new milk cooling standards.
From June 1 this year raw milk must:
- be cooled to 10°C or below within four hours of the start of milking; and
- be cooled to 6°C or below within the sooner of six hours from the start of milking, or two hours from the completion of milking; and
- be held at or below 6°C without freezing until collection or the next milking; and
- must not exceed 10°C during subsequent milkings.
A dairy must efficiently cool milk before it enters the vat, using reliable and cost-effective systems to chill it quickly. Plate coolers, water chillers, ice and glycol systems are available and can be configured to meet farm needs.
Through the season, herd size, flow rates and water source temperatures change.
A farmer must be sure milk will be down to temperature before the tanker comes to collect it. Pre-cooling the milk before it reaches the vat is often the best way to confidently achieve low milk temperatures.
When assessing the best method of cooling onfarm, a number of factors come into play: site constraints, power reliability, size of herd, water availability and variable costs.
Selecting the right pre-cooling systemcan help to reduce energy costs by reducing peak power loads and ongoing shed operating costs.
DairyNZ says its plantain programme continues to deliver promising results, with new data confirming that modest levels of plantain in pastures reduce nitrogen leaching, offering farmers a practical, science-backed tool to meet environmental goals.
As an independent review of the National Pest Management Plan for TB finds the goal of complete eradication by 2055 is still valide, feedback is being sought on how to finish the job.
DairyNZ has pulled together tactics that will help farmers improve on-farm efficiency and have positive benefits for the environment. These tactics are based on research, data, and lessons from leading farmers.
The design and construction of an effective dairy effluent system is a complex process.
After serving three as a DairyNZ director, Waikato farmer Chris Lewis is ready for another term.
Foot and Mouth Disease outbreaks could have a detrimental impact on any country's rural sector, as seen in the United Kingdom's 2000 outbreak that saw the compulsory slaughter of over six million animals.
The Ministry for the Environment is joining as a national award sponsor in the Ballance Farm Environment Awards (BFEA from next year).
Kiwis are wasting less of their food than they were two years ago, and this has been enough to push New Zealand’s total household food waste bill lower, the 2025 Rabobank KiwiHarvest Food Waste survey has found.
OPINION: Sir Lockwood Smith has clearly and succinctly defined what academic freedom is all about, the boundaries around it and the responsibility that goes with this privilege.
DairyNZ says its plantain programme continues to deliver promising results, with new data confirming that modest levels of plantain in pastures reduce nitrogen leaching, offering farmers a practical, science-backed tool to meet environmental goals.
'Common sense' cuts to government red tape will make it easier for New Zealand to deliver safe food to more markets.
OPINION: Should cows in NZ be microchipped?
OPINION: Legislation being drafted to bring back the controversial trade of live animal exports by sea is getting stuck in the…
