Feeding and Nutrition
Part of Animal Husbandry
Every livestock failure traces back to the same root cause: the animal did not eat enough of the right things. Feed is the foundation of animal health, reproduction, and production. Understanding what each species needs, where to find it, and how to store it through lean seasons is the difference between a thriving herd and dead animals.
The Three Pillars of Animal Nutrition
All livestock need three categories of nutrition in proper balance:
| Category | Function | Sources |
|---|---|---|
| Energy (carbohydrates, fats) | Fuel for movement, warmth, growth, milk production | Grains, root crops, fruit, grass, hay, kitchen scraps |
| Protein | Muscle growth, milk production, reproduction | Legume hay (alfalfa, clover), insects, whey, beans, sunflower seeds |
| Minerals and vitamins | Bone structure, immune function, enzyme systems | Salt, calcium (bone meal, eggshell), forage diversity, mineral-rich browse |
Most feeding problems in a post-collapse setting stem from energy or protein deficiency during winter, drought, or late gestation. Animals that appear “fine” in summer crash in winter because stored feed lacks the protein or energy density of fresh forage.
Species-Specific Requirements
Ruminants (Cattle, Goats, Sheep)
Ruminants have a four-chambered stomach that ferments cellulose — they can extract nutrition from grass, hay, browse, and woody plants that non-ruminants cannot digest. The rumen (first stomach) contains billions of microorganisms that break down fiber. This system is powerful but fragile.
Critical rules for ruminant feeding:
Step 1. Never change feed suddenly. Rumen microbes need 10-14 days to adapt to a new diet. Switching from hay to lush pasture overnight causes bloat. Introducing grain too quickly causes acidosis (rumen pH drops, microbes die, animal becomes severely ill). Always transition gradually over 2 weeks.
Step 2. Maintain a minimum of 50% long-stem fiber (hay or pasture) in the diet. The physical structure of fiber stimulates cud chewing, which produces saliva, which buffers rumen acid. Cut the fiber component and the whole system crashes.
Step 3. Provide free-choice salt and minerals at all times. A simple mineral station: a weatherproof box containing loose salt and crushed bone or eggshell (for calcium and phosphorus). Animals self-regulate mineral intake — let them choose.
| Species | Daily Dry Matter Intake (% body weight) | Protein Need (% of diet) | Primary Feed |
|---|---|---|---|
| Dairy cow (lactating) | 3-4% | 14-16% | Pasture/hay + legume hay + grain if available |
| Beef cow (maintenance) | 2-2.5% | 8-10% | Pasture/hay only |
| Dairy goat (lactating) | 3.5-5% | 14-16% | Browse + legume hay |
| Goat (maintenance) | 2-3% | 8-10% | Browse + grass hay |
| Sheep | 2-3% | 10-14% | Pasture/hay |
Grain Overload (Acidosis)
If a ruminant breaks into a grain store and gorges, it is a life-threatening emergency. The rumen fills with rapidly fermenting starch, producing lactic acid that kills rumen microbes and damages the rumen wall. Signs: bloated abdomen, grinding teeth, staggering, lying down and refusing to rise. Drench with baking soda dissolved in water (100g in 1 liter for cattle, 30g for goats) immediately. Walk the animal. This is a race against time — untreated acidosis kills within 24 hours.
Monogastrics (Pigs, Poultry)
Pigs and chickens have simple stomachs and cannot digest raw cellulose. They need higher-quality, more digestible feeds than ruminants.
| Species | Daily Feed Intake | Protein Need | Primary Feed Sources |
|---|---|---|---|
| Growing pig (30-90 kg) | 2-4% body weight | 14-18% | Kitchen scraps, grain, root crops, whey, insects |
| Sow (lactating) | 4-6 kg/day | 16-18% | As above, increase volume 50% |
| Laying hen | 100-130 g/day | 16-18% | Grain, insects, greens, kitchen scraps |
| Meat chicken (growing) | 70-150 g/day | 18-22% | Grain, insects, high-protein supplements |
Protein is the bottleneck for monogastrics. Without commercial soybean meal or fishmeal, you must find alternative protein sources:
- Insects: Black soldier fly larvae are the gold standard — they grow on any organic waste and contain 40% protein. Mealworms are another option. Both can be raised at scale in warm months.
- Earthworms: Grown in compost bins, harvested and fed fresh. Roughly 60% protein on a dry basis.
- Whey and dairy byproducts: Excellent protein source. Feed 2-4 liters of whey per pig per day.
- Legume meals: Cooked soybeans, cowpeas, or other pulses ground or mashed.
- Blood and offal from slaughter: Cook first, then feed. High protein, no waste.
Pasture Management
Pasture is the cheapest feed source and the backbone of any ruminant feeding system. Well-managed pasture produces 5,000-10,000 kg of dry matter per hectare per year in temperate climates — enough to feed 1-2 cattle or 6-10 goats.
Rotational grazing fundamentals:
Step 1. Divide pasture into a minimum of 4 paddocks (8 is better). This can be done with permanent fencing, temporary electric wire, or even shepherding.
Step 2. Graze one paddock at a time. Move animals when grass height reaches 5-8 cm (2-3 inches). Never graze shorter — the plant needs leaf surface to photosynthesize and regrow.
Step 3. Rest each paddock for 21-35 days before regrazing. This rest period accomplishes three things:
- Grass regrows to 15-20 cm
- Parasite larvae on the ground die without a host (most larvae die within 21 days)
- Dung beetles and decomposers break down manure, returning nutrients to soil
Step 4. In the first year, note which paddocks recover fastest and which are slow. Slow paddocks may need overseeding with productive grass and legume species, or they may be better suited to hay production.
Improving pasture without machinery:
- Broadcast clover seed onto existing pasture in early spring — clover fixes nitrogen and boosts protein content of the sward
- Allow one paddock to go to seed each year — this self-seeds and thickens the stand
- Drag a heavy branch or pallet across grazed paddocks to spread manure piles, preventing nutrient hotspots
Hay Making
Hay is dried pasture grass or legumes, stored for winter feeding. It is the single most important feed reserve for any community with ruminant livestock.
Timing: Cut hay when plants are in early bloom (for legumes) or boot stage (for grasses). Earlier cutting has higher protein but lower yield. Later cutting has more bulk but lower nutrition. Early bloom is the best compromise.
Step 1 — Cutting. Use a scythe, sickle, or any sharp blade. Cut in the morning after dew has dried. Lay cut grass in thin, even swaths across the field.
Step 2 — Drying. Hay must dry to below 15% moisture to store safely. In sunny, warm weather, this takes 2-4 days. Turn the swaths once daily with a pitchfork to expose all surfaces. In humid climates, drying takes longer and rain is the primary risk — rained-on hay loses nutrition and can mold.
Step 3 — Testing dryness. Grab a handful and twist it tightly. If stems snap cleanly, it is dry enough. If they bend without breaking or feel cool and damp, continue drying.
Step 4 — Storage. Stack hay under cover — a roof is essential. Ground contact causes bottom layers to rot. Stack on a platform of logs or pallets. Build the stack with a slight inward taper so rain sheds off the sides if the roof leaks.
Spontaneous Combustion
Hay stored above 20% moisture heats internally from bacterial activity. If the core temperature exceeds 70C (160F), the hay can ignite spontaneously — this is not myth, it is a genuine and common cause of barn fires. Always test moisture before stacking. If you detect heat in a haystack (place your hand deep inside), spread the hay immediately to cool.
| Hay Type | Protein Content | Best For | Yield (kg/hectare) |
|---|---|---|---|
| Alfalfa (lucerne) | 15-20% | Dairy cows, lactating goats | 6,000-10,000 |
| Red clover | 12-16% | All ruminants | 4,000-7,000 |
| Timothy grass | 7-10% | Maintenance feeding, horses | 4,000-6,000 |
| Mixed grass | 6-9% | Maintenance, beef cattle | 3,000-5,000 |
| Oat hay | 8-10% | All livestock | 3,000-5,000 |
Seasonal Feeding Calendar
| Season | Ruminant Feed Strategy | Monogastric Feed Strategy |
|---|---|---|
| Spring | Transition slowly to fresh pasture over 14 days; lush grass causes bloat if introduced suddenly | Increase forage; insects become available; reduce stored feed |
| Summer | Pasture is primary feed; make hay from surplus growth | Kitchen scraps peak; forage insects, fruit, garden waste |
| Autumn | Pasture quality declines; begin supplementing hay; stockpile root crops | Harvest acorns, nuts for pigs; preserve surplus garden produce for winter feed |
| Winter | Full hay feeding + grain/root supplement for lactating and pregnant animals | Stored grain, root crops, preserved scraps; protein becomes critical — maintain insect cultures indoors if possible |
Feed Storage
| Feed Type | Storage Method | Shelf Life |
|---|---|---|
| Hay | Under roof, off ground, below 15% moisture | 1-2 years |
| Whole grain (wheat, oats, corn) | Dry, rodent-proof containers (metal bins, sealed drums) | 1-3 years |
| Root crops (turnips, beets, carrots) | Root cellar, buried in sand, 2-5C | 3-6 months |
| Dried legumes | Dry containers, rodent-proof | 2-5 years |
| Silage (fermented grass) | Sealed pit or wrapped stack (anaerobic) | 1-2 years if seal maintained |
Silage is an alternative to hay when drying weather is unreliable. Cut green grass or corn is packed tightly into a pit or wrapped in airtight material (plastic sheeting, clay-sealed pit). Anaerobic fermentation preserves the feed like sauerkraut. Silage retains more nutrition than hay but requires careful sealing — any air intrusion causes mold and spoilage.
Calculating Feed Budgets
Before winter arrives, calculate whether you have enough stored feed to survive:
Step 1. Count your animals and estimate their average weight.
Step 2. Multiply total animal weight by the daily dry matter intake percentage (see tables above).
Step 3. Multiply daily feed need by the number of days until pasture returns (typically 120-180 days in temperate climates).
Step 4. Compare this number to your hay and stored feed inventory.
Step 5. If you have a deficit, you have three options — reduce herd size now (cull for meat), acquire more feed through trade, or reduce feeding rates and accept lower production and possible animal loss.
Example: 4 goats averaging 50 kg each, at 2.5% daily intake = 5 kg hay/day total. Over 150 winter days = 750 kg of hay needed. Add 20% buffer for waste = 900 kg minimum.
Starvation Is Gradual and Deceptive
Livestock lose condition slowly. A cow can lose 15% of body weight before obvious rib exposure. By that point, recovery takes months and reproductive failure is already locked in. Weigh or condition-score animals monthly through winter. If body condition is declining, increase feed immediately or cull before the animal is too weak to process for meat.
Key Takeaways
- Energy and protein are the two critical nutrient categories; most winter failures come from protein deficiency
- Never change a ruminant’s diet suddenly — 14-day transitions prevent bloat and acidosis
- Rotational grazing across 4-8 paddocks is the cheapest and most effective feeding strategy, simultaneously providing nutrition and breaking parasite cycles
- Hay must dry below 15% moisture before storage; wet hay molds or self-ignites
- Protein for pigs and poultry is the hardest nutrient to source without commercial feed — invest in insect farming (black soldier fly larvae, mealworms) early
- Calculate your winter feed budget before winter; the math does not lie, and running out means dead animals
- Free-choice salt and mineral access is non-negotiable for all species — a mineral station costs almost nothing and prevents deficiency diseases that mimic serious illness