CATDOLL : CATDOLL: New technology for raising silkworms, feed and methods for raising silkworms (video on new technology for raising silkworms, feed and methods for raising silkworms)

1. New technology for factory-based silkworm farming?

The biggest feature of factory silkworm farming is that silkworms are fed with artificial synthetic feed and color pigments are incorporated into the feed. Silkworms are fed feed of the desired color of silk, which reduces the number of silk dyeing processes.

2. What is the best feed formula for silkworm breeding?

In addition to providing silkworms with protein, vitamins, inorganic substances and other nutrients in artificial feed, mulberry leaf powder also contains feeding-promoting substances, which play a role in the balance of nutrients in artificial feed, the improvement of physical properties, and the supplementation of unknown nutrients.

The quality requirements of mulberry leaf powder for artificial feed are relatively high. Generally, spring leaves are used. Mulberry leaves are harvested in full after the 5-year-old silkworms are cocooned. The leaf quality requirements are that the mulberry garden is free of pesticides and industrial pollution and has good fertilization and management. Then it is dried and crushed. The feed for young silkworms should be finer, while the feed for strong silkworms can be coarser. The crushed mulberry leaf powder is fresh green and has a fresh mulberry leaf fragrance. When preparing artificial feed, it is generally recommended to use the best quality mulberry leaf powder for young silkworms, and some slightly lower quality mulberry leaf powder can be used in combination with strong silkworms.

3. New technologies and methods for silkworm breeding?

1. Preparation

Before raising silkworms, be sure to prepare a clean, odor-free cardboard box, and then poke some small holes on the top of the box to facilitate ventilation.

2. Incubation

Place the silkworm eggs in a carton at a temperature of 21-29°C. The incubation time is generally about 11 days.

3. Feeding

(1) When the silkworms are about to hatch, put an appropriate amount of fresh mulberry leaves into the cardboard box for the silkworms to eat.

(2) When silkworms are in the young stage, they can be fed with fresh and tender mulberry leaves. When they are in the adult stage, they can be fed with ordinary mulberry leaves.

(3) Before feeding, be sure to check the mulberry leaves carefully to pick out diseased, moldy, and insect-infested leaves, and make sure there is no water on the leaves, otherwise the silkworms will easily suffer from diarrhea after eating them.

4. Cleaning

(1) The old mulberry leaves in the cartons must be removed regularly and replaced with fresh mulberry leaves. All silkworm feces in the cartons must be cleaned up.

(2) When changing mulberry leaves to clean the feces, you must use a brush. The silkworms on the old mulberry leaves can be gently swept onto the new mulberry leaves, and then the silkworm feces and old mulberry leaves in the cardboard box are cleaned, and finally the new mulberry leaves are put into the cardboard box.

(3) If there are dead silkworms in the carton, be sure to clean it up immediately to prevent other silkworms from being infected.

4. What kind of feed should be fed to silkworms?

Currently, there are various artificial feeds for silkworm farming, and the formulas are different. The main ones are as follows.

1. Mulberry leaf powder

In addition to providing silkworms with protein, vitamins, inorganic substances and other nutrients, mulberry leaf powder also contains feeding-promoting substances in artificial feed, which play a role in the balance of nutrients in artificial feed, the improvement of physical properties, and the supplement of unknown nutrients. The quality requirements of mulberry leaf powder for artificial feed are relatively high. Generally, spring leaves are used. Mulberry leaves are harvested in full after the 5th-year-old cocoon. The requirements for leaf quality are that there is no pesticide and industrial pollution, and the mulberry garden is well fertilized and managed. Then it is dried and crushed. The feed for young silkworms should be finer, and the feed for strong silkworms can be coarser. The crushed mulberry leaf powder is fresh and green, with a fresh mulberry leaf fragrance. When preparing artificial feed, it is generally necessary to use the best quality mulberry leaf powder for young silkworms, and some slightly inferior quality mulberry leaf powder can be used in combination with strong silkworms.

2. Defatted soy flour

The defatted soybean meal used in artificial feed is made by crushing soybean meal. Soybean meal is the residue left after soybeans are pressed into flakes and extracted with solvents to make oil. The amino acid composition of defatted soybean meal is similar to that of mulberry leaves. It is rich in nutrition and very cheap. Both at home and abroad, defatted soybean meal is used as the main protein source in artificial feed for silkworms.

3. Cellulose

Silkworms lack cellulase in their digestive system, and therefore cannot decompose, digest, or absorb cellulose in feed. The main function of cellulose is to give artificial feed certain physical properties, which is beneficial for silkworms to eat, and to promote the movement of contents in the digestive tract and the penetration of food by digestive juices. In addition to a certain amount of crude fiber in mulberry leaves and soybean meal, 10% to 15% cellulose powder is added to most artificial feed formulas for young silkworms. Cellulose powder can promote silkworms' eating, digestion, and absorption, and significantly improve feeding performance.

4. Corn flour

Corn has many excellent properties as a feed ingredient: high fat content, high starch digestibility, high heat energy, and low price. It is a widely applicable energy feed in livestock and poultry feed. However, the protein content of ordinary corn varieties is low, and its amino acid composition is very unbalanced. As a raw material for artificial feed for silkworms, corn is not a good protein source and should be used in combination with defatted soybean meal to complement the nutrients. Corn flour contains more starch, which can play a certain role in shaping the feed. Corn flour does not contain substances that hinder silkworm feeding. Adding corn flour in the feed in an appropriate amount can reduce the amount of defatted soybean meal, which has a certain effect on reducing feed costs and improving silkworm breeding results.

5. Forming agent

The main function of the molding agent is to maintain the moisture and certain physical properties of the feed, so as to facilitate feeding and silkworm ingestion. The most commonly used molding agents in artificial feed are agar powder, carrageenan and starch.

6. Preservatives

Bacteria, yeast and mold are the main causes of artificial feed corruption. Although silkworm artificial feed is sterilized at high temperature, it will still be contaminated during the breeding process. Therefore, a certain amount of preservatives must be added to the artificial feed.

The main preservatives are sorbic acid or potassium sorbate, calcium propionate, sodium benzoate, etc. Since the preservatives such as sorbic acid and propionic acid have the best preservative effect when the pH value is around 4.5 to 5, citric acid must be added to the feed to adjust the pH value.

7. The compound feed is made by mixing the following raw materials: 20% mulberry leaf powder, 40% soybean protein powder, 8% cellulose, 8% starch, 5% sucrose, 8% yeast, 2.5% citric acid, 0.5% antibiotics, and 8% inorganic salts. Add appropriate amount of water to the above raw materials and mix well, make into blocks, steam, cool and then cut into slices, which can be used for silkworm breeding.

5. New technology for silkworm breeding?

The goal is to promote mechanized and labor-saving mulberry planting and silkworm rearing technologies and stimulate the enthusiasm of silkworm farmers. By promoting the country's leading "mechanical mulberry branch cutting", "frame stacking small silkworm co-rearing", "simple greenhouse raising of large silkworms", "labor-saving strip mulberry rearing technology", "labor-saving silkworm rearing on silkworm platforms", "track-type mulberry feeding", "automatic cocooning technology", "fast cocoon picker" and other labor-saving technologies and tools, the work efficiency and economic benefits have been greatly improved, and the enthusiasm of farmers in planting mulberry and raising silkworms has been enhanced.

6. How to make silkworm feed using plants?

The raw materials of homemade silkworm feed are: 25-30% dry mulberry leaf powder, 30-35% soybean meal powder, 20-25% corn flour, 4-5% sucrose, 6-7% carrageenan, 1.5-2.5% inorganic salt, 0.5-0.75% vitamin B mixture, 0.5-1.0% vitamin C, and 0.25-0.5% preservative. Steps: crush the picked mulberry leaves into 100-mesh mulberry leaf powder by sun drying or steam drying, weigh the mulberry leaf powder and other components, fully mix the dry mulberry leaf powder and other raw materials, add water according to the ratio of dry powder: water = 1:3, fully stir and steam under high pressure for 30 minutes, add preservatives and vitamin C and vitamin B mixture, stir again, shape and cool at room temperature. The feed is easy to make, low in cost, and highly applicable. It is labor-saving and labor-saving to raise silkworms with it, and the growth and development of silkworms is good, and it has good antiseptic performance.