Microparticle feed formula for domesticating largemouth bass fry and application thereof

A technology of micro-particle feed and largemouth bass, which is applied in the field of fish farming, can solve the problems of unfavorable digestion of largemouth bass larvae, consumption of a large amount of biological bait, and large differences in larvae specifications, so as to improve the success rate of domestication and save breeding costs , good food-attracting effect

Pending Publication Date: 2022-04-05
HUAZHONG AGRI UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] However, during the breeding period of the seedlings, it needs to go through a stage of domestication and feed transfer. During the domestication process, the larvae have large differences in specifications because they are not suitable for artificial feed, and they cannibalize each other. The feed will cause the larvae to have problems such as high deformity rate and slow growth due to indigestion
[0004] At present, the time for domestication of largemouth bass usually starts 15-30 days after the larvae open their mouths, which requires a large amount of biological bait, and the fry are prone to diseases. Most of them are similar to adult fish feed, and the pellets are harder
The application of this type of feed is not conducive to the digestion of largemouth bass larvae, resulting in low taming success and slow growth of larvae

Method used

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  • Microparticle feed formula for domesticating largemouth bass fry and application thereof
  • Microparticle feed formula for domesticating largemouth bass fry and application thereof
  • Microparticle feed formula for domesticating largemouth bass fry and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Largemouth bass seed domestication micro-pellet feed formula, which is made of the following raw materials with mass fraction:

[0038]

[0039]

[0040] The additive adopts the following composition: vitamin mixture and mineral mixture.

[0041] Among them, the vitamin mixture consists of the following ingredients:

[0042]

[0043] Wherein, the mineral salt mixture consists of the following components:

[0044]

[0045] The fish meal is Peruvian fish meal, with crude protein ≥ 60% and crude fat ≥ 8%.

[0046] The krill powder is prepared by crushing chilled fresh krill after freeze-drying, and the crude protein is more than 50% and the crude fat is more than 8%.

[0047] The squid powder is prepared by crushing chilled squid after freeze-drying, and the crude protein is more than 75% and the crude fat is more than 3%.

[0048] The α-starch, the English name is α-Starch, the Chinese alias is pregelatinized starch; CAS number: 9005-84-9, (C6H10O5)n, starc...

Embodiment 2

[0061] In this example, the growth performance and nutritional composition of largemouth bass larvae were studied after being fed with different main protein sources of feed.

[0062]The fish used in the experiment were larvae with an average body weight of 1 mg, consistent in size and healthy. Artemia and commercial feed were used as the control group, and three different main protein source feeds were used as the experimental group. Each group had 3 replicates, and each replicate had 800 fish, which were respectively raised in blue insulation barrels with a diameter of 140 cm and a height of 70 cm 0.6m 3 In the net cage (100cm * 100cm * 60cm), the feeding cycle is 28 days. During the breeding period, the water temperature was 24±0.6°C, the dissolved oxygen was 6.6±0.5mg / L, and the pH was 7.5±0.3. Artemia was fed for 5 days before the experiment; from 6 to 18 days, micro-granule feed and Artemia were fed together, and the ratio of Artemia feed was changed every 3 days until...

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Abstract

According to the feed formula, squid powder is used as a main protein source of the feed, an amino acid mode is optimized, larva fish ingestion is promoted, the larva fish can be easily digested and absorbed by the larva fish, and therefore the purposes that the larva fish domestication time is shortened, and the larva fish domestication success rate is increased are achieved. By means of popularization and implementation of the method, the feeding taming success rate of the largemouth bass is greatly increased, the breeding cost is saved, and huge economic value is created.

Description

technical field [0001] The invention belongs to the technical field of fish farming, and in particular relates to a microparticle feed formula for domesticating largemouth bass seedlings, and also relates to the application of the feed formula in domesticating largemouth bass seedlings. Background technique [0002] Largemouth bass (Micropterus salmoides), also known as California perch, belongs to Perciformes (Perciformes), sunfish family (Centrarchidae), black perch (Micropterus) fish, native to Canada and the United States. This fish is a high-quality freshwater fish in my country. It has the advantages of strong adaptability, fast growth, easy to catch, and short breeding cycle. In addition, the meat is delicious and tender, without intermuscular spines, and its appearance is beautiful. It is very popular among farmers and consumers. [0003] However, during the breeding period of the seedlings, it needs to go through a stage of domestication and feed transfer. During th...

Claims

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Application Information

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IPC IPC(8): A23K50/80A01K61/10A23K10/22A23K20/163A23K20/158A23K20/26A23K20/105A23K20/174
CPCY02A40/81
Inventor 高坚尤奇王萍贺厚雄
Owner HUAZHONG AGRI UNIV
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