Every cow you milk goes through the same four events: she calves, she gets served, she gets in calf, she’s dried off. What happens in the six weeks either side of calving decides whether that cycle repeats smoothly, or turns into a slog of health issues that costs the cow her condition, her milk, and sometimes her place in the herd.
The dry period isn’t a holiday for the cow. It’s when the udder renews itself ready for the next lactation, and it’s your best window to clear up any lingering infections before they become next lactation’s cell count problem. Calving itself is about as demanding as anything a cow goes through: she has to mobilise fat and protein, find calcium from somewhere, and cope with a surge of inflammation, all while her appetite naturally falls just when she needs to eat the most. Cows are well adapted to manage this. The job is not stacking the odds against them.
Get the basics right first
Across the client farms I work with, the same handful of management factors keep coming up whenever we encounter a transition problem; too many group moves in the run up to calving, not enough feed space, bedding and water space, and sick cows going unnoticed for too long. None of it is unusual. It’s also usually cheaper to fix than the disease it’s causing.
Group moves are the one farms underestimate most. Every time you shift a cow into a new social group, she spends several days re-establishing her position in the hierarchy, and a cow that drops down the pecking order in the process tends to eat less than one that holds her rank. Do it in the last fortnight before calving, when she can least afford the disruption. The fix costs nothing: settle the group earlier, and add newcomers on a regular weekly rhythm rather than trickling individuals in whenever it’s convenient.
Feed space works the same way. Cows that don’t have enough room at the feed fence compete for it, and it’s always the heifers and lower ranking cows who lose out first, right when they can least afford to eat less. Aim for genuine feed space per cow rather than whatever fits, try to keep a buffer zone so nobody is ever forced out, and push feed up regularly rather than letting it sit out of reach. None of this is about gold plating facilities. It’s about making sure every cow in the group, not just the confident ones, gets a fair crack at the feed face.
Stress doesn’t stack in a simple, accumulative way, either. Heat stress, overcrowding, a late group move and limited feed access don’t just add up; they compound each other, so fixing any one of them tends to buy you more benefit than you’d expect from that factor alone.
The diet still has to be right
None of the above replaces sound nutrition. The far off and close up rations need to be formulated properly for energy, protein, and minerals, and milk fever prevention deserves proper attention in its own right rather than an afterthought. DCAD based diets work well, but they’re only as reliable as your forage testing and attention to detail. Binder alternatives sidestep the forage variability problem entirely, at the cost of being a more expensive line on the feed bill. Which route makes sense depends on how consistent your forage actually is, and how quickly you can get results back when it changes; it isn’t a one size fits all.
Catching what prevention misses
No system prevents everything, so the stock management is vital to catching problems early, while they’re still cheap to deal with. The cost of missing them is well established in the independent literature, not just anecdotal. Cows that go on to develop severe metritis are already eating 2-4kgs less dry matter a day in the two to three weeks before it becomes clinically obvious, and every 1kg drop in intake during the final week before calving raises the odds of severe metritis by roughly threefold (Huzzey et al., 2007). Dry matter intake typically falls by around a third in the final week before calving anyway, which is exactly why cows already struggling with intake are the ones who tip over into disease (Bertics et al., 1992).
A proper fresh cow check takes a few minutes and tells you most of what you need. Look at bright and alert through to slightly depressed, not doing all right. Check appetite, and get a feel for rumen fill and activity. A rectal temperature is worth adding to that routine, since it’s a sensitive early flag for disease well before a cow looks obviously unwell, and it’s the detail that tells you whether antibiotics or an anti inflammatory is the right call rather than guesswork. Body condition scoring at dry-off and again after calving tells you about outliers and net change rather than a single snapshot, and manure or lameness scoring are quick enough to build into a normal walk through rather than something that needs a special visit.
For farms wanting more precision, blood testing for NEFA and BHB around calving can flag disease risk before clinical signs appear at all. This is best used as a herd-level screening tool during a problem period, rather than something you’d run on every cow routinely. It tells you whether you’re looking at a nutrition issue, a facilities issue, or both, which matters more than the individual cow result.
The real question
The question worth asking isn’t how to fix broken cows, it’s whether you’re fixing them or actually stopping them breaking in the first place. Both matter, but they’re different jobs. Prevention lives in facilities, grouping, and feed access. Monitoring lives in protocols, observation, and knowing what normal looks like well enough that abnormal stands out fast. Most farms lean hard on one and neglect the other, usually because whoever’s running the herd has more instinct for one side of it than the other.
Build a system, not a set of good intentions. A system that only works when everything goes to plan isn’t really a system at all.
Sort out group moves, feed/water space, and bedding space; get the diet formulation right; and put a simple, repeatable monitoring routine in place so problems get caught in days rather than weeks. Do all three properly and you’re not just avoiding disasters, you’re setting up the next lactation’s production and fertility.
References
- Huzzey, J.M., Veira, D.M., Weary, D.M. and von Keyserlingk, M.A.G. (2007). Prepartum behavior and dry matter intake identify dairy cows at risk for metritis. Journal of Dairy Science, 90, 3220-3233.
- Bertics, S.J., Grummer, R.R., Cadorniga-Valino, C. and Stoddard, E.E. (1992). Effect of prepartum dry matter intake on liver triglyceride concentration and early lactation. Journal of Dairy Science, 75, 1914-1922.