🐄 Water: The Input Nobody Budgets For

The last module was about feed, and feed is where almost every farmer's attention goes. Water gets far less thought, for one simple reason: for most of the year it is there, and when it is there it costs nothing to think about. That is exactly why it is dangerous.

Cattle are large-bodied animals with a correspondingly large daily water requirement, and water shortage acts fast. A feed shortage can sometimes be partly compensated for over weeks - an animal draws on body reserves, loses condition slowly, and you have time to see it happening and respond. Water restriction does not work like that. It affects feed intake and growth within days, because an animal that cannot drink enough will simply eat less.

Hold on to that sentence, because it is the whole mechanism. Water shortage does not usually kill your cattle. It quietly turns off their appetite.

Follow the chain through to money, using the arithmetic this course has already built. In Module 4 you learned the core equation of a beef herd: total kilograms weaned per year equals cows exposed to the bull, multiplied by calving percentage, multiplied by calf survival to weaning, multiplied by average weaning weight. Every one of those terms is downstream of intake.

• A calf that eats less grows more slowly, so the weaning weight term falls.
• A cow that eats less loses condition, and a cow in poor condition after calving does not come back into heat on time, so the calving percentage term falls the following year.
• Both effects can be running at once, in the same season, on the same animals, without a single dead animal to show for it.

That invisibility is the real problem. A dead cow gets your attention. A herd that is drinking slightly less than it should for three months does not. You see cattle standing at a trough every day, they look normal, and yet somewhere in the herd's arithmetic kilograms are being lost that you will never see on a scale because you never had the counterfactual.

So the discipline this module asks of you is to move water out of the category of things that happen and into the category of things you plan, measure and cost. In the costing module you will build a gross margin per cow. Water belongs in it, either as a borehole running cost - fuel, power, pump maintenance, repairs - or as the time cost of trekking cattle to water and back, which is real labour even though no money changes hands. A farmer who counts the dip bill and the feed bill but treats water as free has left one of the herd's genuine costs out of the accounts.

One more thing to say plainly at the start, because it shapes everything else in this module. You are about to be taught water without a litres-per-day table. That is deliberate and it is explained fully in the next lesson. The short version is that no daily water-intake figure for a beef animal of any weight class, at any temperature, from any source, was obtained for this course to a standard worth teaching you. Rather than hand you a remembered number that might be wrong for your breed, your climate and your feed, this module teaches you to measure your own herd. That is more work than reading a table. It is also more accurate than any table would be for your particular farm, because intake varies enormously with air temperature, with how much water is already in the feed the animals are eating, with body size, and with whether an animal is lactating.

What you can do straight away, before any measuring, is look honestly at your own water situation and ask three questions. Is water available to every animal, every day, without a queue that leaves the timid ones short? Is the water clean enough that the cattle will actually drink their fill? And is the point where they drink close enough to the grazing that they are not spending half the day walking to it? Those three questions cover most of what goes wrong with water on a smallholding, and none of them needs a number to answer.

This is the most important lesson in the module and it contains no number at all.

Every course on cattle you have ever seen has a water table in it. So many litres a day for a dry cow, more for a lactating cow, more again when it is hot. You expect one here. You are not getting one, and you deserve the full reason rather than a shrug.

When the reference material for this course was compiled, every specific daily water-intake figure that could be located came from United States or general temperate-climate extension sources, not from any African-measured dataset. Several of those publications were identified. None of the actual litres-per-day-by-weight-and-temperature tables inside them could be opened and read - access was blocked on every attempt. The result, stated exactly as the reference states it, is that this course contains no specific litres-per-day water-intake figure for a beef cow of any weight class, at any temperature, from any source, African or otherwise, verified to a standard worth teaching you as fact.

That gap is stated rather than filled. It would have been easy to write down a plausible-sounding remembered figure. It would have looked authoritative, it would have matched what you expected, and you would have had no way of checking it. That is exactly the failure this whole course is built to avoid. A number you cannot trace is worse than no number, because it stops you looking for the real one.

Now, why a borrowed figure would be genuinely risky rather than merely imperfect. Daily water intake in cattle is not one number, it is a result that moves with several things at once.

• Air temperature. The same animal drinks very differently on a cool overcast day and in the middle of a hot dry spell.
• Water already in the feed. An animal grazing lush green wet-season grass takes in a substantial amount of water in the feed itself. The same animal on dry, stemmy standing hay or maize stover in the dry season does not, and must drink the difference.
• Body size. This course has already taught you that frame size varies enormously between and within breeds - the Large Stock Unit system exists precisely because a 450 kg animal and a 320 kg animal are not the same animal.
• Physiological class. A lactating cow, a growing calf, a dry cow and a working bull do not have the same requirement.
• Salt and mineral intake, and the quality of the water itself.

A table built for a temperate climate on large-framed European breeds eating a formulated ration is a table built on assumptions that may not describe your herd at all. Applying it confidently to indigenous or Sanga-type cattle on dry veld in an African dry season is guesswork dressed up as science.

So where do you actually get an intake table, if you want one? Not from this course, and not from memory. Ask, in this order:

1. Your national or provincial agricultural extension service. This is the same authority that should be giving you the stocking rate and rest-period figures the grazing module also refused to invent.
2. Your national livestock or agricultural research institute - the bodies this course has named repeatedly for country-specific questions.
3. A veterinarian or animal scientist working in your own district, who sees your climate and your breeds.
4. An agricultural college or university animal-science department in your country.

When you ask, ask three specific things: what figure they use, what weight class and what temperature it applies to, and where it came from. If they cannot tell you the third, treat the answer the same way you should treat this course's silence - as a gap.

And then, whatever they tell you, do Lesson 3. Measure your own herd. A figure you measured at your own trough, on your own cattle, on a known day, in your own weather is better evidence about your farm than any published table can be, because it has none of the assumptions built in. The published table, if you get one, becomes a useful cross-check: if your measurement and their figure are in the same neighbourhood, you can plan with more confidence. If they are wildly different, you have learned something important about either your measurement or their assumptions, and either is worth knowing.

One genuinely African, sourced figure does exist in the reference, and the next lesson deals with it - along with the reason it must not be used the way people want to use it.

You have no table. You have a trough, a container of known volume, a pencil and a herd. That is enough.

You are measuring how much water disappears from a known container over a known period, drunk by a known number of animals, in known weather. Everything else is detail. Here is the procedure.

1. Choose a container or trough you can fill to a mark and measure. If it is a drum, find out how many litres it holds by filling it with a bucket of known size and counting the buckets. If it is a concrete trough, measure it or fill it the same way. Write the number on the trough with paint if you can.
2. Fill to the mark and record the volume in, the date and the time.
3. Let the herd drink for a defined period - a full day is ideal, or a defined watering session if you water once or twice a day.
4. At the end, record what is left, and record every top-up you made in between. Water used equals water in, plus top-ups, minus water left.
5. Count and classify the animals that drank: how many cows, how many with calves at foot, how many growing calves, bulls, and any small stock using the same trough.
6. Record the weather. Hot and dry, or cool and overcast. And record what they were eating - green grazing or dry roughage.
7. Divide water used by the number of animals to get a rough per-head figure for that day.

Now the two honest cautions about that figure.

First, it is an average across mixed classes, and a lactating cow drinks more than a weaned calf. If you want a cleaner figure, measure a group of one class alone - for example the weaned calves in a separate pen - on a day when nothing else drinks from that trough.

Second, and more important: that figure belongs to that day, that weather and that feed. It is not your farm's permanent number. Measure on a hot dry day and on a cool day, in the wet season on green grazing and in the dry season on stover. After a year you will have four or five figures with their conditions written beside them, and that set is a genuinely useful planning tool - your own, small, honest table, built from your own animals.

What do you do with it? Three things.

• Size your storage and your pumping. If you know what the herd used on the hottest day you measured, you know what your tank, your pump running time, or your trekking effort must deliver on a bad day, not an average one.
• Detect a problem early. If usage drops sharply and the weather has not changed, something is wrong - a blocked pipe, fouled water the animals refuse, a dominant animal blocking the trough, or sick animals. Usage is a health signal as well as a supply figure.
• Check any table you are later given, as Lesson 2 said.

Now the one genuinely African, breed-specific water figure that this course does have, and the careful way to hold it. Boran cattle - the East African indigenous breed covered earlier in this course - are reported by their breed society to carry numerous sweat glands as part of their documented heat adaptation, and to be capable of surviving on watering intervals of every three to four days in rangeland conditions with 500 to 800 mm of annual rainfall.

That is a striking, specific, sourced figure and it tells you something real about what generations of selection under arid rangeland conditions can produce in an indigenous breed. It is also the single most dangerous sentence in this module if it is read wrongly.

It describes an extreme adaptation, in one specific breed, under specific rangeland conditions, and it says surviving. It is not a watering guideline. It must never be generalised into "cattle only need water every three or four days." Most cattle - including most crosses and all exotic breeds - need daily access to water, and applying the Boran interval to an ordinary herd would be a serious welfare failure and a serious production failure at the same time, because the intake and growth mechanism from Lesson 1 would be running against you every day of it.

Use it as one more piece of evidence in the indigenous-versus-exotic argument this course has made from the beginning. A locally adapted breed can hold on through conditions that would break an unadapted one. That is a reason to respect indigenous genetics. It is not a licence to under-water any herd, including a Boran herd you want productive rather than merely alive.

A cow that drinks her fill every day can still be losing you weight, and the reason is the distance she walked to do it.

The principle is straightforward and it is sound even though this course has no number to put on it. An animal that must walk a long distance to water spends energy walking that would otherwise have gone to maintenance or to growth. That energy came out of the same grass she ate. Nothing about it appears as a symptom. She is not thirsty, she is not thin in any obvious way, she simply converts less of her feed into the product you sell.

There is a second effect running alongside it, and on extensive grazing it is often larger than the first. Cattle graze outward from water. The area close to the water point gets grazed hardest and first - this is where you see bare ground, dung concentration and the palatable species disappearing. The far corners get visited late, lightly, or not at all. A farm with one distant water point has a ruined ring around the water and an underused far end. Both halves are lost production.

And there is a third, which matters most in the dry season. When feed is poor and animals are already short of energy, walking is the last thing they can afford. A long trek to water in the hardest month is charged directly to the body condition that decides whether the cow rebreeds.

Be clear on what this course does and does not know here. No figure quantifying kilograms of liveweight gain lost per unit of water restriction, or per unit of extra walking distance to water, was obtained for this reference, for any breed. That is a real gap and it is flagged as one. So nobody can tell you that a walk of a given distance costs a given number of kilograms. What the reference does state is the principle: distance to water is a real production cost even where the animal never shows a visible sign of thirst, and siting new water points closer to grazing, or negotiating access to an existing one, is a genuine, if capital-intensive, productivity investment - not merely a convenience.

That word convenience is the one to notice. Farmers routinely think about a closer water point as making their own life easier, and then decline to spend money on their own comfort. Reframe it. It is an investment in the growth rate that produces weaning weight, and in the even use of grazing you already own and are already paying for.

How to assess your own situation without any published figure.

1. Walk it. Go from the furthest point your cattle graze to the water point at a normal pace and time it. Do it in the dry season, in the heat, not on a pleasant morning. A herd doing that twice a day is doing it in worse condition than you are.
2. Look at the ground. Walk out from the water point and note where the bare, trampled, dung-heavy zone ends. Then walk to the far edge of the grazing and see whether the grass there is standing ungrazed. That contrast is your distance problem drawn on the ground, free of charge.
3. Watch the herd's timetable. If cattle spend a large part of the day walking in a line rather than grazing with heads down, you are watching feed being burned as travel.
4. Ask where the timid animals are. In a long trek with a crowded arrival at the trough, the animals that lose out are the young, the small and the low-ranking - often exactly the growing stock whose weight you are trying to build.

The options, in rough order of cost.

• Move the grazing pattern rather than the water: use the far blocks in the cool, wet part of the year when the walk costs least, and keep the near blocks for the hard months.
• Rest the ruined zone near the water, which is the same rest principle taught in the grazing module.
• Negotiate access to a neighbour's or a communal water point that is nearer to your far grazing. This costs talk rather than capital, and on communal land it is often the only realistic route.
• Pipe or cart water to a second trough point, temporarily or permanently.
• Develop a new source. This is the capital-intensive end, and Lesson 5 deals with what those sources are and how to judge them.

Whatever you do, record the distance and record what you changed. Since nobody can give you the kilograms lost per kilometre, the only way that number will ever exist for your farm is if you measure weaning weights before and after you change something.

Water on a smallholding comes from a small number of places, and each one fails in its own particular way. Knowing how yours fails is more useful than knowing what it cost.

The sources documented for this course are natural rivers and pans, boreholes, and hand-dug wells, alongside dams and, in some places, piped or purchased supply. Take them in turn, on the one question that matters: what happens in the driest month of a bad year.

Rivers and pans are rain-dependent, and are often dry for part of the year. That is their defining characteristic. A river that runs strongly for eight months and stops for four is not a water supply for a herd you keep for twelve. Pans - shallow natural depressions holding rainwater - are the same problem in a smaller, more concentrated form: they fill quickly, they are heavily used by everything nearby, and they go from adequate to mud to nothing over a few weeks. Surface water is also where quality problems concentrate, since the same shrinking pool is drunk from, stood in and dunged in by every animal for miles.

Boreholes are capital-intensive and require a pump and often power infrastructure. That is a different shape of risk entirely. A borehole does not usually fail because of this year's rainfall; it fails because the pump breaks, the fuel runs out, the power fails, the pipe blocks, or nobody has the money for the repair at the moment it is needed. Most of those failures happen on a specific day rather than over a season, and without warning. A herd on a single pumped source with no storage and no spare parts is one breakdown from a crisis, in a way a herd on a river is not.

Hand-dug wells sit between the two. Lower capital cost, no pump necessarily required, but shallower - drawing on the water table nearest the surface, the part that drops first and furthest in a long dry season.

Now the honest gap, and it is a large one. Specific comparative costs, yields or reliability figures for any of these sourcing methods on an African smallholding were not obtained for this course to a standard worth teaching as a number. So this course cannot tell you what a borehole costs to sink in your country, how many litres an hour it should give, or how a well compares on cost per litre. Those figures are highly local, and must come from your national or district water authority, your extension service, a licensed drilling contractor giving you a written quotation, or farmers who recently did the work.

Be aware too that groundwater is very often a regulated matter. In many countries drilling a borehole, abstracting groundwater, or damming a watercourse requires a permit from a water authority or catchment agency, and the rules differ by country and sometimes by catchment within a country. This course gives no permit rule and no threshold. Before you spend money on a borehole or a dam, ask the relevant national or catchment water authority what permission is required, and get the answer in writing.

What this course can give you is the planning principle, and it is the same principle Module 6 gave you for feed. Water availability, like grazing, has a dry-season low point. A farm's herd size should be planned against the driest reliable water supply the farm has access to - not against the wet-season abundance.

The mistake that prevents is extremely common. A farmer looks at a full pan and green grass, sees the herd comfortable, and lets it grow. Then the pan dries, the river stops, and the same herd stands at whatever is left. The herd was never sized for the water; it was sized for the abundance.

So do this arithmetic in the wet season, not the dry one.

1. List every source your cattle can reach.
2. Beside each, write the month in a normal year when it is at its lowest, and what it is like then.
3. Cross out every source that is not reliable in the driest month.
4. What is left is your real supply. Your herd size question is whether that supply can carry the herd - and if it cannot, you have either a destocking decision or a water-development decision to make, and you have months in which to make it rather than days.

One more thing worth writing down: who else depends on the source you depend on. On communal land the reliable dry-season point is used by many herds at once, and a source that would carry your cattle alone may not carry everyone's. That is a negotiation and a community matter, not an engineering one, and it is best started long before the water gets short.

Everything in this module now has to end up on one page with the feed plan, because water and feed fail in the same months and the decisions they force are the same decisions.

Start with triggers, exactly as the dry-season module taught. A trigger is a fact that forces a decision, not a feeling. Written in a calm month, it is far more honest than a judgement made in a bad one, because in the moment you will always find a reason to wait one more week.

Good water triggers are things you can see and record.

• The level in the pan or dam, marked against a post you drive into it at the start of the season. When the level reaches the mark, the decision happens.
• The flow at the river crossing, or the date the river stops running.
• The pump's running time needed to fill the trough. If it takes noticeably longer this month than last for the same volume, your borehole is telling you something and it is worth acting before it stops.
• The queue at the trough. If the herd can no longer all drink within the watering session, you have already outgrown the supply.

Beside each trigger, write the action. Usually the action is one of: start selling the cull list from the feed-plan module; move a group of animals to another water point or to grazing elsewhere; wean early to reduce the drinking demand of lactating cows; or begin carting water, with the cost written down before you start rather than discovered afterwards.

Note that destocking helps the water problem instantly and permanently, in exactly the way it helps the feed problem. Every animal removed stops drinking that day and every day after. And the culling order is the same order the feed module gave you, for the same reason: the animals that were already candidates go first, and your core breeding females and your bull go last, because they are your capacity to produce calves when the rains return.

Now the costing, which most farmers skip. Water belongs in the per-cow budget as a variable cost, and this course's costing module will ask you for it. Depending on how you get water, that line is built from:

• Fuel or electricity for pumping, over the year.
• Pump servicing, spare parts and the repairs you actually paid for.
• Any borrowing, hire or contractor cost for developing or deepening a source, spread across the years it will serve.
• Trough, pipe, tank and fencing maintenance.
• The labour of trekking cattle to water, or of carting water to cattle. Value this honestly even where no money changes hands. It is hours that could have gone elsewhere.
• Any fee or share paid for access to a communal or neighbour's source.

Divide by the number of cows, and you have a per-cow water cost to sit beside the dip cost and the feed cost. That figure has a use beyond bookkeeping: it is what you weigh a water investment against, in the same currency as everything else.

Then combine the two plans into one calendar. On a single page, by month, write:

1. When the grass stops growing and when it starts again - your feed gap.
2. When each water source is at its lowest, and when any of them fails outright.
3. The trigger dates and levels for both feed and water.
4. The cull list in order, by tag number, that serves both.

What you will usually find is that the feed gap and the water low point overlap heavily, which is not a coincidence - they are both caused by the same absence of rain. That overlap is the hardest part of your year, and it is now written down in advance rather than discovered.

Finally, keep the record. Each season, write down what happened: when the pan dried, what the herd used at the trough on the worst day, whether the triggers fired and whether you obeyed them, what you sold and what you got for it. This course has repeatedly refused numbers it could not verify, and the honest answer to that refusal is the same every time - the numbers for your farm exist only if you create them.

The rule to leave this module with: water is not an emergency to be handled, it is an input to be planned, measured and costed. Handle it like the dip bill and the feed bill, and it stops being the thing that quietly takes kilograms off your calves while everything looks fine.