DairyNZ lifts breakeven milk price forecast to $8.68 for 2025/26 season
According to DairyNZ's latest Econ Tracker update, there has been a rise in the forecast breakeven milk price for the 2025/26 season.
Range in body condition score (BCS) is as important as average BCS at calving, says DairyNZ.
The ideal BCS of 5.0 for mixed age cows and 5.5 for first and second calvers is a target for each individual animal, as well as a herd target.
The cows at greatest risk of poor reproductive performance are the first and second calvers.
“We all know that within a herd there is always going to be a range of BCS, as each animal will have a slightly different metabolism, intake, milk production, etc,” it says.
The challenge is to get the spread in BCS at calving as small as possible around the targets. Aim for at least 90% of mixed age cows being BCS 4.5-5.5 at calving.
There are various strategies managers can use to get every cow close to her ideal BCS at calving within a herd, such as:
Drying-off low producing, fat cows early
These cows put fat on their back instead of milk in your vat. When feed is short, herd milk production commonly increases by drying-off the low producing fat cows as the other more productive cows are fed better. And there is often an area of low quality feed on a farm where these cows can be put to maintain themselves, such as steep sidelings or gullies.
Ensure heifers are on track for weight and BCS
Check every four-six weeks that replacements are gaining enough weight and remedy any shortcomings. Aim to have these at BCS 5.5 when they return from grazing, as they will put on little weight (and often lose weight) while they adapt to being in the herd. Well grown heifers introduced to the mixed age cows during the dry period will compete well as milkers.
Give the first calvers more time dry than older cows
Young cows are still growing to reach their mature weight and often have lower intakes. Therefore, they are only able to put weight on slowly, and require more time to get to target condition.
Split dry herds on BCS and time until calving
If you dry-off all at once then it is necessary to split the dry cows into herds based on condition and expected calving date. This allows for preferential feeding to get all cows to target BCS. Even if not enough feed is available to put on extra condition, creating herds is still a good idea, as it protects the younger cows from competition from the older more dominant cows. If supplement is going to be fed then feed it to the herd you want to gain the most condition or that needs to put it on fastest.
Staggered dry-off based on BCS and time to calving
The principle here is that every dry cow can be fed the same, but the difference is how long she is dry for. In low input systems, the dry-off decision rules work well. In higher input systems, where dry cows are well fed on a mixture of pasture and supplement, cows at BCS 4.5 or better only require 50-60 days dry; cows at BCS 4.0 or worse need 80-90 days dry.
Part season once-a-day (OAD) milking for all or part of the herd
Cows that are milked OAD are less likely to milk off their back than cows milked twice-a-day, and when well fed will put more weight on during lactation. Groups of cows particularly vulnerable to not reaching BCS targets, such as first calvers and early calving cows, are ideal candidates for part-season OAD milking.
The key is to go on OAD early enough to have an impact on BCS, as milking OAD for a couple of weeks or a month before drying-off has little impact. The reduction in daily milksolids production can largely be made up by milking on for longer, as cows do not have to be dried off as early due to BCS. OAD milking is unwise where the herd already has a high SCC, as it will increase when starting OAD.
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