Merino

The Merino is a wool sheep first developed in Spain, and today it is found across most of the world's major sheep country. Its fleece is the finest of any common breed, with fibres far thinner than those grown by meat or carpet-wool types. That fineness is why the breed has been bred, traded and guarded so closely down the centuries.

A Merino is medium in size, and both ewes and rams carry a dense fleece over most of the body. Many strains show loose folds of skin, especially around the neck, which add to the wool-bearing area. The breed is hardy and does as well on dry rangeland as on improved pasture, and that adaptability is what carried it to Australia, South Africa, South America and the western United States.

Temperament is one of the breed's real strengths. Merinos are gentle, calm and good-natured, so a big flock is far easier to gather, shear and handle than flightier types. They are sociable animals that stick together as a group and settle quickly once routine management takes hold.

Who the Merino suits

The Merino suits keepers whose main interest is wool, from commercial fine-wool growers to handspinners after soft fibre for their own use. It rewards owners who can keep up with regular shearing, good pasture and routine parasite and foot care. Its placid nature also makes it a fair option for smallholders, provided the heavy coat and the risk of fly-strike are taken seriously rather than overlooked.

The Merino developed in Spain, where fine-wool sheep were kept in large migratory flocks through the Middle Ages. Spanish fine wool became a leading export, and the flocks behind it were run under an organised system of seasonal movement between summer and winter grazing ground.

For a long stretch, the export of breeding stock out of Spain was tightly controlled, since the value of the wool depended on keeping the best sheep at home. That restriction made the breed both prized and hard to come by anywhere else in Europe.

From the eighteenth century on, small numbers of Spanish sheep were sent abroad, to parts of Europe and later to the southern hemisphere. These foundation animals were used to build new national flocks. Australia in particular grew into a major centre of Merino breeding, and selection there produced strains suited to dry rangeland and large-scale wool growing.

Over time, breeders in different regions developed distinct types that vary in body size, skin folding and fleece weight, while holding on to the trait that defines the breed: very fine wool. The Merino remains the foundation of fine-wool production in many countries today.

The Merino has a compact, medium-sized body set on relatively short legs, with a deep, dense fleece covering most of the animal. The wool is white and finely crimped, and it grows over the body, much of the legs and often part of the face. Many strains carry loose folds of skin, most noticeable on the neck, which add to the wool-bearing area.

Horns vary by sex and strain. Rams of some types carry large spiral horns, while others are polled; ewes are usually hornless or carry only small horns. The face is generally clean-skinned and pale, sometimes half hidden by wool growth around the eyes.

Coat and colours

The fleece is what defines the breed. Merino wool is among the finest grown by any sheep, with thin fibres that give it a soft handle. The fleece is dense and even, with a regular crimp that adds spring. Standard Merino wool is white, so it takes dye to any colour after processing. Heavy wool growth on the face can leave some animals wool-blind, and many breeders select against excess facial cover to cut down on this.

The Merino is known for a calm, biddable temperament. The breed is gentle and good-natured, and the animals are generally easy to move and handle compared with flightier types. That steadiness counts for a lot in large flocks, where ease of gathering and quiet behaviour at shearing time save effort and keep the sheep from getting stressed.

Merinos are strongly sociable and prefer to stay together as a group. A lone sheep gets stressed, so they should always be kept with others. Around handlers they know, they settle quickly and take routine jobs such as dosing, foot trimming and shearing in their stride.

With people the breed is not aggressive, though rams of horned strains need careful handling during the breeding season. They get on well with other grazing stock and are not territorial. Guardian dogs are often used to protect a flock from outside threats rather than to manage behaviour within it.

Merinos need steady management centred on the fleece and the feet. Their wool does not shed on its own, so shearing is not optional. The dense coat also leaves them more open to fly-strike than smooth-coated breeds, so hygiene around the tail end and timely shearing matter all year round.

Grooming

• Shear at least once a year; some flocks shear twice, depending on climate and wool length.
• Crutch (trim wool around the tail and udder) between shearings to cut down on dung build-up and fly-strike risk.
• Check the fleece regularly for signs of strike, especially in warm, damp weather.
• Watch for wool blindness in heavily wooled faces and trim around the eyes if needed.

Exercise

• Give daily access to grazing so the sheep move and forage naturally.
• Rotate pasture to keep feed quality up and parasite burden down.
• Leave room for the whole flock to move together, since Merinos travel as a group.

Environment

Merinos cope well with dry, open country and manage across a range of climates. They need clean water, shade in hot weather, and shelter from cold wind and rain, particularly straight after shearing when the fleece no longer keeps them warm. Secure fencing and good drainage in the yard help keep foot problems at bay.

As ruminants, Merinos are built to live on pasture and other forage. Good grazing covers most of their needs for much of the year. Feed demands rise during late pregnancy and lactation, and during dry spells when pasture quality drops. At those times hay, silage or grain-based supplements fill the gap. A steady supply of clean water is essential, and intake goes up with heat and milk production.

Mineral balance matters for both health and wool quality. Sheep on poor or restricted pasture may need extra minerals, and copper especially has to be watched closely, since sheep are sensitive to too much of it.

Treats and supplements

Use supplements sparingly and always alongside forage, never instead of it. Sheep-specific mineral licks or loose minerals correct local shortfalls. A sudden switch to a high-grain diet can upset digestion, so any concentrate should go in gradually. Wool growth and fleece quality both come on better with steady, adequate feeding than with the odd rich meal.

Merinos are generally hardy sheep and cope with demanding climates. With good management they commonly live 10 to 12 years, though their productive breeding life is usually shorter. Most health trouble in the breed comes from the same sources that affect sheep generally: internal parasites, foot disease, and conditions tied to the fleece. The dense Merino coat brings a particular risk of fly-strike and, in some animals, wool blindness.

Preventive care

• Base parasite control on faecal testing rather than routine blanket dosing.
• Trim and check feet regularly and keep yards dry.
• Crutch and shear on schedule to cut fly-strike risk.
• Keep vaccinations up to date for the clostridial diseases common in your area.
• Provide the right minerals and avoid too much copper.

Merinos reach breeding maturity within their first year, though ewes are often joined once well grown rather than at the earliest possible age. Many Merino strains breed seasonally, with mating timed so lambs arrive in suitable weather. Rams run with the ewes for a set joining period, and ewe condition at mating has a strong bearing on how many take.

Gestation runs about five months. Merino ewes most often rear a single lamb, with twins less common than in some specialised meat breeds; the lambing rate varies with strain, nutrition and management. Ewes are generally attentive mothers, and lambs are up and suckling soon after birth.

Rearing young comes down to protecting newborn lambs from cold and predators, making sure they get colostrum early, and keeping ewes in good condition through lactation. Lambs are weaned after a few months. In breeding programmes, selection weighs wool fineness and fleece weight against fertility, growth and overall constitution, so the flock stays productive without losing hardiness.