The Guernsey is a medium-sized dairy breed originating from the Isle of Guernsey in the English Channel. Introduced to Kenya in the 1930s, it has been developed for milk production and is mainly found in the central highlands and parts of the Rift Valley, with notable populations at ADC and Mukumu farms. The Guernsey breed society promotes standards and encourages its uptake. This breed performs well under high-input zero-grazing and semi-zero grazing systems. It tolerates heat stress and resists common diseases better than many other dairy breeds in Kenya.
Guernsey cows have a fawn to reddish-brown coat with white patches. Their hair is short and fine, and they have pink pigmentation. Ears are horizontal or semi-pendulous, and most animals are short-horned, though a few are polled. Mature females weigh between 320 and 500 kg, while bulls range from 600 to 700 kg. Height at the withers is 1.3–1.5 m. The breed has a concave face, strong back, broad loin, wide rump, deep barrel, and a well-attached udder with evenly balanced quarters. Bulls display vigour, strength, and smooth, refined conformation.
Guernseys reach reproductive maturity early. First service occurs at 13–18 months, and first calving at 22–27 months. Fertility exceeds 80%. Calves are robust at birth, which reduces rearing challenges. Milk production ranges from 2,000 to 5,000 kg per lactation, with butter fat of 4.2–4.6% and protein of 3.8–4.3%. The breed efficiently converts feed, requiring only 65–85 kg of fresh forage per day. Its heat-tolerant coat allows the animals to maintain production under stress. Guernsey cows are docile and manageable, making them suitable for investors seeking reliable milk output, moderate feeding costs, and early returns.