High-quality larval stage feed for shrimp larvae, and preparation method of larval stage feed

Abstract

The invention discloses a high-quality larval stage feed for shrimp larvae, and a preparation method of the larval stage feed, wherein the feed comprises the following components in percent by weight: 25-40% of fish meal, 3-8% of shrimp meal, 1-4% of shrimp chaff, 1-3% of meat and bone meal, 1-3% of X fly larval protein, 1-5% of fermented bean meal, 8-18% of skinless bean meal, 8-18% of peanut bran, 2-4% of sleeve-fish ointment, 0.5-1.5% of yeast autolysis powder, 0.5-1.5% of active lactic acid bacteria powder, 0.5-1.5% of bacillus, 15-25% of high gluten flour, 0.5-2% of bentonite, 0.5-1.5% of sea fish oil, 0.3-1% of soybean oil, 1-3% of soybean lecithin, 0.5-2.0% of calcium dihydrogen phosphate, 0.1-1% of cholesterol, 0.1-1% of glucan, 0.05-0.2% of 35% vitamin C-phosphate, 0.05-0.2% of astaxanthin, 0.1-0.5% of multivitamins and 1.5-2.5% of complex mineral salt. The high-quality larval stage feed can meet the demand of penaeus vannamei boone on nutrition at the larval stage, and is capable of accelerating the growth rate of the shrimp larvae at the larval stage, improving the immunity of the shrimp larvae and guaranteeing the survival rate of the shrimp larvae; furthermore, the larval stage feed for the shrimp larvae is proper in particle size and can meet the food intake demand of the shrimp larvae.

Description

technical field [0001] The invention relates to an open bait for shrimp seedlings, which belongs to the technical field of compound feeds, in particular to a high-grade open bait for shrimp seedlings targeting Penaeus vannamei and a preparation method thereof. Background technique [0002] Penaeus vannamei, scientific name Litopenaeus vannamei, is native to the Americas and is one of the three main cultured prawns in my country and the world. Breeding is becoming more and more difficult, and the high outbreak rate of diseases also makes the yield per mu continue to decrease, and the loss-making customers continue to increase, especially the EMS that has appeared in recent years, which is easy to break out within 15-40 days of breeding, and the key reason is the broodstock germplasm Poor, unbalanced nutrition in the shrimp juvenile stage, resulting in low immunity of juvenile shrimp, prone to EMS outbreaks. [0003] In terms of germplasm of Penaeus vannamei, our country curren...

AI Technical Summary

Problems solved by technology

In the early stage of Penaeus vannamei, juvenile shrimp mainly use water algae and small protozoa as food sources, but in reality, due to the different fat and thin water bodies in each shrimp pond, the amount of algae and protozoa varies, resulting in nutritional deficiencies or imbalances Therefore, the initial growth of shrimp seedlings is slow, and the disease resistance is low. Within one month of breeding, red bodies, cramps, etc. often appear, and even EMS breaks out, which eventually leads to low survival rate of shrimp seedlings and causes great losses to farmers.

[0004] At present, there are very few open baits for shrimp juveniles of Penaeus vannamei in the market. Although there are small feeds for juvenile shrimp in the market, the general particle size is too large and the nutrition is not balanced, which cannot meet the needs of shrimp juveniles.