Feed additive for improving output and quality of silkworm cocoons and preparation method thereof

Abstract

The invention discloses a preparation method for a feed additive for improving output and quality of silkworm cocoons, which comprises the following steps: inoculating strains of D. radiopugnance with the preservation number of ATCC 19172 on a solid medium to be cultivated, and then picking single bacterial colony to be inoculated on a liquid medium to obtain activated seed bacterium liquid; inoculating the activated seed bacterium liquid on a fermentation medium according to the inoculation amount of 4.5% to 6.0%, and cultivating for 60-72 hours at the temperature of 28 DEG C to 32 DEG C to obtain fermentation liquid; and centrifuging the fermentation liquid, laying obtained thallus of the D. radiopugnance to enable the thickness to be from 0.1cm to 1.0cm, then processing the obtained thallus of the D. radiopugnance for 40-60s with the frequency of 600-700MHz and the electric-field strength of 8,000-9,000 V / cm, drying with cold air until the water content is smaller than 8% and obtaining the feed additive for improving output and quality of silkworm cocoons.

Description

technical field [0001] The invention belongs to the technical field of silkworm feed additives, and relates to a feed additive for improving the output and quality of silkworm cocoons and a preparation method thereof. Background technique [0002] Sericulture production is an industry with quick results and large profits, and it is the pillar of rural economic development and an important means for farmers to get rid of poverty and become rich; sericulture is also a traditional export industry that earns foreign exchange, and its export volume ranks first in the world. Although since the 1950s, through the replacement of silkworm varieties, the production and quality of silkworm cocoons have achieved certain development, but it is still far from meeting the development needs of the current era, improving the production performance of silkworms, and increasing the production of silkworm cocoons. Quality is one of the goals that people in the silk industry always pursue. In o...

AI Technical Summary

Problems solved by technology

However, the above-mentioned method has the following disadvantages at the same time: when the silkworm eggs or larvae are processed by physical methods such as high-voltage electrostatic field treatment and radiation irradiation, the cost of equipment used is relatively high; sugar, trace elements, magnetically treated water, and triacontanol are added. , urea, etc. have single or similar components, the effect is not good, and the economic benefits are not obvious; adding hormones, etc., needs to prolong the age of silkworm larvae; and increasing the cocoon yield by changing the feeding conditions such as temperature, humidity and light has uncertainty in increasing production. characteristics, and the operation is relatively complicated, so it has not been popularized and applied in actual production.