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The silkworm spins approximately one mile of filament and completely encloses itself in a cocoon in about two or three days. The amount of usable quality silk in each cocoon is small. As a result, about 2,500 silkworms are required to produce a pound of raw silk. [12] The intact cocoons are boiled, killing the silkworm pupa.
Actual manure generation will be lower because it is only a fractional component of litter. This translates to an average of about 0.7 ounce per day per bird, varying considerably over the life of the bird. This means that a single broiler house, which can contain well over 20,000 birds can generate over 40,000 lb (18,000 kg) of litter per flock.
The fibers are fine and lustrous, about 10 μm (0.0004 in) in diameter. About 2,000 to 3,000 cocoons are required to make one pound (0.45 kg). At least 70 million lb (32 million kg) of raw silk are produced each year, requiring nearly 10 billion cocoons. [8] [better source needed]
Sericin is a protein created by Bombyx mori (silkworms) in the production of silk. [1] Silk is a fibre produced by the silkworm in production of its cocoon. It consists mainly of two proteins, fibroin and sericin. Silk consists of 70–80% fibroin and 20–30% sericin; fibroin being the structural center of the silk, and sericin being the gum ...
The Bombyx mori usually produces silk thread of varying colors, ranging from light gold to very light green, with lengths varying from 500 to 1,500 yards per cocoon. A single thread filament is too thin to use on its own, so Thai women combine many threads to produce a thicker, usable fiber.
Antheraea paphia, known as the South India small tussore, the tasar silkworm and vanya silkworm [2] is a species of moth of the family Saturniidae found in India [3] [4] and Sri Lanka. [5] The bulk of the literature on this species uses a junior synonym, Antheraea mylitta , rather than the correct name, A. paphia . [ 1 ]
Muga silkworms on a som tree. Wild silks have been known and used in many countries from early times, although the scale of production is far smaller than that from cultivated silkworms. Silk cocoons and nests often resemble paper or cloth, and their use has arisen independently in many societies. [1]
Farming of crickets in Thailand. Insect farming is the practice of raising and breeding insects as livestock, also referred to as minilivestock or micro stock.Insects may be farmed for the commodities they produce (like silk, honey, lac or insect tea), or for them themselves; to be used as food, as feed, as a dye, and otherwise.