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Domesticated sheep are herd animals that are bred for agricultural trade. A flock of sheep is mated by a single ram, which has either been chosen by a farmer or, in feral populations, has established dominance through physical contests with other rams. [1] Sheep have a breeding season (tupping) in the autumn, though some can breed year-round. [1]
An adult female is referred to as a ewe (/ j uː / yoo), an intact male as a ram, occasionally a tup, a castrated male as a wether, and a young sheep as a lamb. Sheep are most likely descended from the wild mouflon of Europe and Asia, with Iran being a geographic envelope of the domestication center. [1]
Female sheep are called ewes, males are called rams or less frequently bucks or tups, neutered males are called wethers, and young sheep are called lambs. The adjective applying to sheep is ovine, and the collective term for sheep is flock or mob. The term herd is also occasionally used in this sense, generally for large flocks.
This list of related male and female reproductive organs shows how the male and female reproductive organs and the development of the reproductive system are related, sharing a common developmental path. This makes them biological homologues. These organs differentiate into the respective sex organs in males and females.
Diagram of stages of embryo development to a larval and adult stage. In developmental biology, animal embryonic development, also known as animal embryogenesis, is the developmental stage of an animal embryo. Embryonic development starts with the fertilization of an egg cell (ovum) by a sperm cell (spermatozoon). [1]
In the British Isles called pour-on. Bale – a wool pack containing a specified weight of pressed wool as regulated by industry authorities. Band – a flock with a large number of sheep, generally 1000, which graze on rangeland. Bell sheep – a sheep (usually a rough, wrinkly one) caught by a shearer, just before the end of a shearing run. [1]
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A male sheep impregnated a female goat in New Zealand resulting in a mixed litter of kids and a female sheep–goat hybrid with 57 chromosomes. [6] The hybrid was subsequently shown to be fertile when mated with a ram. [7] In France, natural mating of a doe with a ram produced a female hybrid carrying 57 chromosomes.