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Why don't silkworms spin cocoons? An analysis of common causes

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1. Pathological factors. For example, flacherie and soft rot are prone to infecting and causing disease before mounting, destroying the silkworm's silk gland secretion function, or the pathogen produces large amounts of toxic metabolites in the silkworm's body, paralyzing the silkworm's nerves so that it cannot spin silk and form a cocoon; 2. Physiological factors. First, abnormalities of the middle silk gland, mainly caused by rearing temperatures that are too high or too low, leaves that are too tender, or imbalance of the secretory glands, which causes silk gland abnormalities and prevents spinning; second, abnormalities of the anterior silk gland, mainly caused by exposure during rearing to excessive coal gas, fishy odors, alcohol and other harmful gases

1. Pathological factors. For example, flacherie and soft rot are prone to infecting and causing disease before mounting, destroying the silkworm's silk gland secretion function, or the pathogen produces large amounts of toxic metabolites in the silkworm's body, paralyzing the silkworm's nerves so that it cannot spin silk and form a cocoon;

2. Physiological factors. First, abnormalities of the middle silk gland, mainly caused by rearing temperatures that are too high or too low, leaves that are too tender, or imbalance of the secretory glands, which causes silk gland abnormalities and prevents spinning; second, abnormalities of the anterior silk gland, mainly caused by exposure during rearing to excessive coal gas, fishy odors, alcohol and other harmful gases, resulting in spinning impairment;

3. Trace pesticide poisoning. During rearing or mounting, silkworms ingest or come into contact with trace amounts of pesticides, causing imbalance of the endocrine glands in the silkworm's body and preventing spinning;

4. Improper mounting operations. Rough mounting operations cause the silkworm's silk glands to rupture, or factors such as too low temperature in the mounting frame, unclean mounting tools, overcrowded mounting, and a poor mounting environment cause the silkworm to stop spinning for a long time and fail to form a cocoon.

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