Method for producing high-fineness silkworm cocoon silk through silkworm artificial feed

Abstract

The invention relates to silkworm artificial feed. The silkworm artificial feed is prepared from, by weight, 34%-35.5% of folium mori powder, 41%-43% of soya bean meal, 11%-13% of starch, 5%-7% of cellulose, 2%-3% of feed-grade decavitamin, 1%-2% of citric acid and 1% of feed-grade mixed inorganic salt. The invention further discloses a method for producing high-fineness silkworm cocoon silk through the silkworm artificial feed. The method comprises the steps that four moulting silkworms are selected and fed with the silkworm artificial feed; when five-year-old larvae grow to generate 1%-3% mature larvae, a cocooning agent is sprayed to larva bodies, so that the mature larvae climb to a mounting tool for cocooning by themselves after 10-14 hours; the mature larvae spin and cocoon for 2-2.5 days at the temperature of 27 DEG C to 28 DEG C and the humidity of 50% to 75%, and then continue to spin at the temperature of 23 DEG C to 25 DEG C to complete cocooning. According to the technical method, high-fineness / superhigh-fineness cocoon silk can be stably produced, the cocoon silk deviation is small, high-grade raw silk is produced, a high-quality thin silk fabric can be manufactured, medical operation suture lines can be produced, and the added value of cocoon silk products is increased.

Description

technical field [0001] The invention relates to the fields of sericulture and textile fiber production, in particular to a method for producing silkworm cocoons with artificial feed for silkworms. Background technique [0002] The silkworm is a complete metamorphosis insect. The larvae feed on mulberry leaves. The mature larvae spin cocoons, molt and pupate in the cocoons, and further develop from pupae into adults. After coming out of the cocoon, they mate and lay eggs. The cocoon silk spun by the mature larvae of the silkworm is a super-long natural protein fiber with a length of hundreds to more than 1,000 meters. Although the length of the slender cocoon silk has attracted much attention, the distribution trend of the fineness (cross-sectional area) of the cocoon silk is a more important factor that directly affects the quality of raw silk. Cocoon silk fibers are irregular in shape, with hairiness distributed on the surface, and it is extremely difficult to measure the ...

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Problems solved by technology

[0011] (1) Cultivate fine-sized tetrasomnous silkworm varieties, or use the balanced lethal system to cultivate tetrasomnous male silkworm varieties that only raise male silkworms, and raise fluorescent cocoon color-discriminating tetrasomnous silkworm varieties to achieve male cocoon silk reeling alone Both methods can only produce medium-fine cocoon silk with a cocoon silk fineness of about 2.3-2.6D, which is similar to the cocoon silk fineness of 2.5-2.7D silkworm varieties used in summer and autumn, so it cannot be called a real fine-fine cocoon silk

[0012] (2) Existing cultivating special varieties of three-sleeping silkworms that spit out fine-sized cocoons, or using physiologically active substances such as anti-juvenile hormone analog SM-1 to induce four-sleeping silkworms to change into three-sleeping silkworms to produce fine-slender cocoons Although the silk method has produced fine and ultra-fine cocoon silk with deniers of 0.9-2.0D, there is a phenomenon that three-sleeping silkworms and four-sleeping silkworms exist at the same time due to the unstable rate of three-sleeping silkworms. The development speed of silkworms and the size of silkworms are very different, which makes it very inconvenient to operate and handle the existing silkworm production technology that relies heavily on the uniformity of group development. reduce

[0013] (3) Existing methods of utilizing three-dormant silkworm species or using physiologically active substances to induce four-drown silkworms to become three-drown silkworms to produce silkworm fineness silkworm cocoons are all based on fresh mulberry leaf sericulture technology, and three-drown silkworms The larval period is significantly shortened, which brings problems such as shortening the growth cycle of available mulberry leaves and decreasing the cocoon output per unit area of ​​mulberry fields.

[0014] (4) In the existing method of using physiologically active substances to induce four-drown silkworms to change into three-drown silkworms to produce silkworm finer cocoons, the cocoon yield produced by a single box of silkworm eggs (25,000 eggs) is only 30% of that of four-drown silkworms %, the cocoon shape of silkworm cocoons is very small, and the weight of a single cocoon is only about a quarter of that of tetrasomnous silkworm cocoons. The joy of harvesting is poor, and silkworm cocoons are not suitable for the existing cocoon silk deep processing technology based on tetrasomnous silkworm cocoons

[0015] (5) The silkworm cocoons produced by raising silkworms with artificial feed in the prior art, although the cocoon silk fineness is slightly smaller than the cocoon silk fineness produced by the same species of silkworms raised by mulberry leaves, can only produce medium-fine cocoon silk, and the cocoon silk fineness changes It is very large, unable to achieve stable production of fine cocoon silk, and cannot be accepted by sericulture farmers

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