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Introduction to the Characteristics and Traits of the Guican No. 2 Silkworm Variety

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1. Silkworm eggs are incubated using high-temperature photoperiod incubation. In the early incubation stage (days 1-4), maintain 26 and a wet-dry difference of 1.5; in the late stage (days 5-10), maintain 28 and a wet-dry difference of 1.5-1. Provide 16 hours of light exposure daily, and protect them in darkness after the appearance of blue dots to promote uniform hatching of the silkworm eggs. 2. Carefully carry out disease prevention and disinfection work before, during, and after sericulture. During the rearing period, strengthen disease prevention, hygiene, and technical handling to eliminate pathogen sources and reduce the occurrence of diseased silkworms. 3. For the first feeding of newly hatched silkworms and the first feeding after molting, carefully select fresh, properly matured mulberry leaves for feeding. 4. For the

1. Silkworm eggs are incubated using high-temperature photoperiod incubation. In the early incubation stage (days 1-4), maintain 26 and a wet-dry difference of 1.5; in the late stage (days 5-10), maintain 28 and a wet-dry difference of 1.5-1. Provide 16 hours of light exposure daily, and protect them in darkness after the appearance of blue dots to promote uniform hatching of the silkworm eggs.

2. Carefully carry out disease prevention and disinfection work before, during, and after @#@250@#@. During the rearing period, strengthen disease prevention, hygiene, and technical handling to eliminate pathogen sources and reduce the occurrence of diseased silkworms.

3. For the first feeding of newly hatched silkworms and the first feeding after molting, carefully select fresh, properly matured mulberry leaves for feeding.

4. During the mature silkworm stage, especially during the peak feeding period of the fifth instar, be sure to provide abundant good-quality mulberry leaves. The rearing bed should be kept sparse, and ventilation should be strengthened during hot and humid conditions.

5. Mount the silkworms for cocoon spinning at the proper maturity stage, with a sparse density to prevent overcrowding. Keep the light dim and strengthen ventilation to remove moisture, striving to keep the mounting room dry.

6. Acid treatment standards for silkworm eggs: For cold storage and acid treatment, use hydrochloric acid with a specific gravity of 1.094 at a liquid temperature of 47.8 degrees C. Soak Chinese silkworm varieties for 5.0-5.5 minutes and Japanese silkworm varieties for 6.0 minutes. Each batch of eggs (10 grams of newly hatched silkworms) produces 38 kg or more of cocoons, a 10% increase over "Liangguang No. 2" (9•Fu x 7•Xiang), with a cocoon shell rate of 22% or more, a reelability rate of about 70%, and a neatness score of 92-93 points.

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