CATDOLL : CATDOLL: Raising silkworms and eating compound feed (Is it good to raise silkworms and eat compound feed)

1. What is the formula for silkworm feed?

The silkworm feed formula is mainly made of mulberry leaves, complex vitamins, and complex amino acids after being disinfected with sodium hypochlorite. The young silkworms can easily accept and eat it, which not only saves breeding costs, but also greatly shortens the silkworm breeding time.

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. What is the formula for artificial feed 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.

4. What is the formula for artificial feed for tussah silkworms?

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.

5. What kind of feed should be used to feed 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.

6. What is the yellow feed for silkworms made of?

Mulberry leaves.

Feed formula: The silkworm feed formula is mainly made of mulberry leaves, complex vitamins, and complex amino acids disinfected with sodium hypochlorite. At present, some businesses also extract substances from mulberry leaves to make special silkworm feed. Food: Different types of silkworms eat different foods. Mulberry silkworms mainly eat mulberry leaves, lettuce leaves, etc.; Tussah silkworms feed on leaves of sharp oak, Mongolian oak, and oak; Tian silkworms feed on leaves of Liaodong oak, Mongolian oak, etc.; Amber silkworms mainly feed on nanmu leaves.

7. Is silkworm feed reliable?

Reliable.

Feeding silkworms with this kind of artificial compound feed not only saves a lot of mulberry fields, but also speeds up the growth of silkworms and makes them less likely to get sick. Raising silkworms with artificial feed is a major technological revolution in the silkworm industry, which is of great significance for improving labor productivity, reducing bacterial infection, and adapting to large-scale silkworm farming. The feed cost of silkworm artificial feed varies greatly due to different feed formulas. In order to ensure that artificial feed silkworm farming can achieve certain economic benefits, low-cost silkworm artificial feed formulas are usually used in production. Raw materials such as soybean meal, starch, vitamins, inorganic salts and preservatives in low-cost silkworm artificial feed are generally purchased from the market, and the cost is relatively stable. However, mulberry leaf powder, which is used as a feeding stimulant in silkworm artificial feed, has not yet formed a mature and stable production technology system, nor has it formed a mature and stable supply market. Its quality and price are difficult to grasp, and thus it has become the most unstable factor in feed cost.

8. What kind of feed do silkworms eat?

There are different types of silkworms, and they eat different things:

The silkworm is an oligophagous insect. In addition to eating mulberry leaves, it can also eat lettuce leaves, mulberry leaves, paper mulberry leaves, elm leaves, duck chives, dandelions and lettuce leaves.

2. The silkworm feeds on the leaves of plants of the genus Quercus in the Fagaceae family, such as Quercus acutissima, Quercus mongolica, Quercus truncatula, etc. It can also eat the leaves of plants such as Artemisia selengensis, Yamchus japonica, chestnut, maple, pear, and apple.