Nepedia
Back to Discover
Advanced Reader
📖

Hay

language culture Maturity 7-9 Next article →

Hay is a vital source of animal fodder, which is food for livestock. It consists of grasses, legumes, or other herbaceous plants. These plants are cut and dried for storage. This process allows animals to eat even when pasture is unavailable. This often happens during winter or during a drought.

Haymaking - geograph.org.uk - 980046
Haymaking - geograph.org.uk - 980046

Hay can provide up to 100% of the diet for some grazing animals. It is used for large animals like cattle, horses, and sheep. It is also used for smaller animals like rabbits and guinea pigs.

HorsesAndHay
HorsesAndHay

The process of making hay is a careful, multi-step sequence. First, the plants must be mown in the field. Farmers aim to harvest when leaves are at maximum growth. They also wait until seed heads are just shy of full maturity. This timing ensures the highest nutritional value. Next is the curing stage, which is the process of drying. The goal is to remove bulk moisture while keeping leaves robust.

After drying, the hay is raked into long, narrow piles called windrows. Finally, the hay is processed into bales, stacks, or pits for storage.

RoundAndSquare
RoundAndSquare

Different types of plants make up various kinds of hay. Common grasses include ryegrass, timothy, brome, fescue, and Bermuda grass. Legumes are also frequently included in the mix. These include alfalfa, also known as lucerne, and various clovers.

LPCC-548-Fenc de civada
LPCC-548-Fenc de civada

Ideally, legumes should be cut before they bloom. Some hay also contains pasture forbs, which are other types of plants. However, farmers must be careful because some forbs are toxic to animals. In the United Kingdom, some hay comes from traditional hay meadows. These meadows have a highly diverse flora and support rich ecosystems.

Weather conditions are the primary challenge for hay production. The harvest is highly sensitive to the environment. During a drought, plants may become stunted. This results in hay with coarse stems and low nutrition. Conversely, excessive rain can cause hay to spoil in the field. If hay is too wet when baled, it may develop rot or mold.

Round hay bale, partially eaten
Round hay bale, partially eaten

Mold can create toxins that make animals very sick. This risk is why farmers follow the idiom "make hay while the sun shines." They must act quickly when the weather is optimal.

Haymaking NLW3364567
Haymaking NLW3364567

Animals digest hay using different biological mechanisms. Ruminants, such as cattle and sheep, have four-chambered stomachs. This allows them to break down older forage and tolerate some changes in diet. Cattle often eat large quantities at once and then ruminate while resting. Sheep are very efficient, eating between 2% and 4% of their body weight daily.

HorsesAndHay
HorsesAndHay

In contrast, horses are nonruminant hindgut fermentors. They have a single-chambered stomach and a large organ called a cecum. This system relies on bacterial processes to break down cellulose. Because of this, horses are more sensitive to mold or changes in feed.

HorsesAndHay
HorsesAndHay

Specific nutritional issues can arise from improper hay. If horses eat low-quality hay, they may develop an unhealthy "hay belly." This is caused by consuming too many "empty" calories. Changes in diet or toxic plants can also cause colic, which is a leading cause of death in horses.

HorsesAndHay
HorsesAndHay

To help with dust, farmers may soak or steam the hay. Hay must also be stored carefully to prevent moisture from entering. Proper storage prevents spoilage and protects the nutritional value of the leaves and seeds. The leaves and seeds are the most important parts for nutrition.

Haymaking has evolved significantly throughout human history. In the early Roman Empire, workers used scythes to cut grass by hand.

Breviarium Grimani - Juni detail
Breviarium Grimani - Juni detail

They dried the grass in the field and gathered it onto wagons. Later, horse-drawn implements were used to speed up the work. Today, modern agriculture uses heavy machinery.

NRCSIA99200 - Iowa (3095)(NRCS Photo Gallery)
NRCSIA99200 - Iowa (3095)(NRCS Photo Gallery)

Tractors, tedders, and round balers are now common tools.

Haytruck
Haytruck

These machines help farmers manage the intense activity required during the harvest window. Whether by hand or machine, hay remains the foundation of grazing diets.

642 words

Where will your curiosity go next?

Keep exploring at your chosen reading level.

🖼️ Images & Media (23)
File:Bales from corn stems 01.jpg
Bales from corn stems 01.jpg
File:LPCC-548-Fenc de civada.jpg
LPCC-548-Fenc de civada.jpg
File:Round hay bale, partially eaten.jpg
Round hay bale, partially eaten.jpg
File:HorsesAndHay.jpg
HorsesAndHay.jpg
File:George Stubbs - Haymaking - WGA21948.jpg
George Stubbs - Haymaking - WGA21948.jpg
File:Haymaking - geograph.org.uk - 980046.jpg
Haymaking - geograph.org.uk - 980046.jpg
File:NRCSIA99200 - Iowa (3095)(NRCS Photo Gallery).jpg
NRCSIA99200 - Iowa (3095)(NRCS Photo Gallery).jpg
File:Haytruck.jpg
Haytruck.jpg
File:Breviarium Grimani - Juni detail.jpg
Breviarium Grimani - Juni detail.jpg
File:Haymaking NLW3364567.jpg
Haymaking NLW3364567.jpg
File:Hay scow.jpg
Hay scow.jpg
File:Hay Harvest in Versam.jpg
Hay Harvest in Versam.jpg

+ 11 more

More to explore

✨ What else?

Related topics you might enjoy

🔬 Go deeper

More advanced topics to explore

🪜 Step back

Simpler topics to build understanding

What is Nepedia?

A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.