My Block Hand My Block Hand Open My Block Hand →
Guide · Using the app Hand rearing · Lambs, calves & kids

How to use hand rearing in My Block Hand

Setting up the Hand rearing section, adding a bottle lamb or a whole pen of calves, building a feeding plan by age, logging feeds and mixes, and weaning — plus why the app asks you for the amounts instead of telling you.

What this section is for, and what it isn't.

Hand rearing keeps the feed record for milk-fed young stock — a bottle lamb, a goat kid, or twenty calves on a feeder. It holds your feeding plan, works out how much to mix for a group, logs every feed with a time stamp, and puts the next feed on Today's Brief.

⚠️ Important — this is the bit to be clear on

My Block Hand does not tell you what to feed. It records what you feed. Milk replacers differ between brands and a 3kg lamb isn't a 6kg lamb, so the amounts come from your powder's bag, your vet, and the animal in front of you. The app's job is making sure that what you decided is written down, totalled correctly, and not forgotten at 6am.

Why it's built that way: rearing is a memory and consistency problem more than a knowledge one. With two people on a block, "has anyone done the four o'clock?" gets answered by guessing — and a double feed is a genuine bloat risk, not just a wasted bottle.

Three ways in, depending on where you're standing.

The button on an animal's record only appears for a saved, active sheep, cattle or goat — those are the species with rearing built in. It changes label once that animal is on milk, showing you its feed count for the day (🍼 Hand rearing (2/4 today)), so the animal's own record doubles as a status check.

Start from the record you already have.

The usual way this begins isn't a planned rearing pen — it's a lamb you recorded at birth, and four days later the ewe has kicked it off.

Going in via 🍼 Hand rearing on that animal's record carries its name, herd and date of birth across and links the two records together, so the feeding sits in that animal's history alongside its health and breeding for the rest of its life. Tap the button again later and you're editing the same record, not making a second one.

Starting fresh instead — calves off a dairy farm, say — open Hand rearing and tap + Add an animal. For adding the animals themselves, see the Animals section guide.

📅 Date of birth, not the day you started feeding

The app works out feed amounts from the animal's age, so date of birth has to be its real birthday even if the ewe had it for the first four days. There's a separate optional Started bottle feeding field for the day it came to you. Get these the wrong way round and a four-day-old lamb gets fed like a newborn. Coming in from an animal's record fills both correctly for you.

The other fields: Herd / group is what ties animals together for mixing and is worth filling in even for one animal; Wean date is a rough editable guide, not a rule; Feed times can be left blank to spread automatically across the day; and Currently feeding is what you untick when the animal is weaned.

Twenty calves without twenty forms.

In the add panel, tick Adding several at once. You get the same tag-range fields as bulk animal entry: a prefix, a number range and a digit count. C, 1 to 20, 3 digits gives you C001 to C020, with a preview before you commit.

They're created as individual records sharing one feeding plan. That matters both ways — one plan to maintain, but a calf that needs holding back, weaning later, or its own note is still its own record.

Put them all in the same herd / group and you get a Fed all button, which is what makes a pen of twenty survivable at two feeds a day.

Your amounts, set by age range.

Tap Feeding plan on an animal's row. If no plan covers that animal yet the button reads Set feeding plan, so the prompt sits next to the fix.

A plan is a list of age ranges, and you fill in what you actually feed for each:

Add the next range whenever you change what you're doing. Between ranges the amounts hold steady. Past your last range the app says so — "no age range covers day 22" — rather than producing a number.

Save plan checks your ranges before accepting them: overlapping ranges (the earlier one wins, which is worth knowing), gaps where nothing covers an age, and ranges with no millilitres set. The plan belongs to the group, so editing it updates every animal in that herd at once.

🥛 Millilitres means made-up volume

250ml is 50g of powder plus water to make 250ml of milk — not 250ml of water with powder added. Powder in first, then top up to the mark. The other way round you're feeding a stronger, larger feed than you think, and DairyNZ note that getting concentration wrong is a common cause of nutritional scours.

🤔 Why doesn't the app just suggest the amounts?

It used to, and we took it out. Mixing rates differ between products, whey-based and casein-based powders behave differently, and published lamb and calf figures vary widely by breed and birth weight. An app that extrapolated a schedule for a powder it has never seen would be inventing numbers — and worse, showing them in the same panel, same typeface, as the ones you entered yourself. You'd have no way to tell which was which. Better to record what you decided and be honest that it came from you.

What to make up, and marking it done.

Mix for the next feed totals one feed for the whole group — "Mix 200g powder, then top up with warm water to make 1L" for four lambs on 250ml each. Mixed-age groups are handled: if one lamb is on a different range, it totals each animal's own amount rather than assuming they match.

The panel also tells you which range you're in and how long it runs — and if you've entered the next one, what's coming. If you haven't, it says that instead of guessing.

Then log it: Fed now on an animal, or Fed all on the group header. The count shows as 2/4 today and the next feed time appears on Today's Brief, so the question "has that been done?" has an answer that isn't someone's memory.

🍼 Why little and often matters

Once a bottle lamb is past its first few days, Beef + Lamb NZ identify abomasal bloat as the main killer — bacteria fermenting lactose in warm milk sitting in the abomasum, producing gas that can rupture it. Large warm feeds are the substrate. That's the husbandry reason the feeding plan is built around several small feeds a day rather than a daily total, and the reason a duplicated feed is worth avoiding. B+LNZ's yoghurt method and cold-feeding guidance is linked below.

Stopping, and what happens to the record.

When an animal is done, open it with Edit and untick Currently feeding. It drops off Today's Brief and out of the mix totals, its row shows Weaned / stopped, and its full feed history stays. Remove is different — that deletes the record and its feed logs, so use it for mistakes, not for finishing.

The wean date on the record is a rough editable guide and nothing more — the app won't act on it or nag you about it.

🌾 Wean on what they're eating, not the calendar

DairyNZ's guidance is that rumen development is the deciding factor, and the only way to assess it is to measure the solid feed they're actually eating — for calves, at least 1kg/day of meal or 2kg/day of pasture. They also recommend stepping milk down over 1–2 weeks rather than stopping dead, keeping meal in the diet for two weeks after, and weighing 7–10 days later to check they've gained. The same logic applies to a bottle lamb. That's why the date here is a guide and not a trigger.

The honest split.

My Block Hand handles: the feeding plan you've defined by age range; the mix arithmetic for a group, including mixed ages; a dated log of every feed; the next-feed prompt on Today's Brief; bulk entry for a mob and one-tap Fed all; and the link back to the animal's own record so rearing sits in its lifetime history.

You still decide: what to feed and how much, from your milk powder and your vet; when to move to the next age range; when to wean, based on what they're eating; and when something's wrong enough to need a vet.

By the end of a season that gives you something more useful than any general feeding table — a record of what you actually did and how the animals went on it.

The husbandry behind it, from NZ sources.

The app doesn't cover colostrum — it happens before rearing starts — but it's the one thing that can't be fixed later, so it's worth knowing where the guidance sits.

🐄 One thing not to carry across

If you rear both, note this: B+LNZ suggest a whey-based powder for lambs that keep bloating, but DairyNZ state whey-based replacers don't clot in the abomasum and aren't suitable for newborn calves — casein-based products do, which is what a young calf's digestion relies on. Sound advice for a lamb, wrong call for a four-day-old calf.

This guide describes My Block Hand as at July 2026. The husbandry information is general, sourced from DairyNZ and Beef + Lamb New Zealand as linked above, and current at that date. It is not veterinary advice. Follow your milk replacer's label, and talk to your vet about your own stock — particularly if an animal is scouring, bloating, dull or losing condition.