Environment-friendly expanded feed for Litopenaeus vannamei and preparation method thereof

A technology of extruded feed and vanabine, applied in animal feed, animal feed, application and other directions, can solve problems such as water pollution, and achieve the effects of reducing ammonia nitrogen emissions, excellent stability, and improving feed utilization.

Inactive Publication Date: 2015-03-11
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defect that common Litopenaeus vannamei feed easily causes water quality pollution in the prior art, the present invention provides an extruded feed that can meet the nutritional needs of Litopenaeus vannamei and is environmentally friendly

Method used

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  • Environment-friendly expanded feed for Litopenaeus vannamei and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] According to formula 1 shown in Table 1, extruded pellet feed and ring die pellet feed were prepared, and 0.37 g of Litopenaeus vannamei was fed for 56 days at a low temperature of 13-27°C. The feed coefficient of the extruded feed group was 0.95, and the specific growth rate (SGR , %d -1 ) 3.67, growth rate 690.7%, survival rate 83.6%, ring die pellet feed group feed coefficient 1.51, specific growth rate (SGR, %d -1 ) 2.97, the growth rate was 471.7%, and the survival rate was 78.8%. All parameters of extruded feed were higher than ring die pellet feed.

[0026] The preparation method of extruded pellet feed is:

[0027] S1. Weigh the raw materials in said parts by weight, stir and mix all the raw materials separately, pulverize them twice, and mix 100 % Pass through a 60-mesh sieve, mix and stir evenly, add water and fat source raw materials while stirring, and make feed base material.

[0028] S2. Input the above-mentioned feed base material into the biaxial extr...

Embodiment 2

[0031] According to formula 2 shown in Table 1, extruded pellet feed and ring die pellet feed were prepared, and 0.37 g of Litopenaeus vannamei was fed for 56 days at a low temperature of 13-27°C. The feed coefficient of the extruded feed group was 1.12, and the specific growth rate (SGR , %d -1 ) 3.60, growth rate 690.2%, survival rate 70.0%, ring die pellet feed group feed coefficient 1.62, specific growth rate (SGR, %d -1 ) 3.02, the growth rate was 473.5%, and the survival rate was 68.3%. All parameters of extruded feed were higher than ring die pellet feed.

[0032] The preparation method of the expanded pellet feed and the ring die pellet feed is the same as in Example 1.

Embodiment 3

[0034] According to formula 3 shown in Table 1, extruded pellet feed and ring die pellet feed were prepared, and 0.37 g of Litopenaeus vannamei were fed for 56 days at a low temperature of 13-27°C. The feed coefficient of the extruded feed group was 1.4, and the specific growth rate (SGR , %d -1) 3.11, growth rate 523.3%, survival rate 71.7%, ring die pellet feed group feed coefficient 1.75, specific growth rate (SGR, %d -1 ) 2.92, the growth rate was 427.0%, and the survival rate was 67.8%. All parameters of extruded feed were slightly higher than ring die pellet feed.

[0035] The preparation method of the expanded pellet feed and the ring die pellet feed is the same as in Example 1.

[0036] Specific growth rate SGR (% d -1 )=100×(ln final average weight-ln initial average weight) / experimental days

[0037] Weight gain rate WG(%)=(final average weight-initial average weight)×100 / initial average weight

[0038] Survival rate SR (%) = number of remaining shrimp tails at t...

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Abstract

The invention belongs to the technical field of feed and particularly discloses environment-friendly expanded feed capable of meeting the nutritional requirement of Litopenaeus vannamei and a preparation method thereof. The expanded feed is prepared in such a way that the following feed raw materials in percentage by weight are crushed and mixed to obtain a feed base material and the feed base material is extruded, expanded, pelletized and cured: 65-80 percent of a protein source raw material, 0.5-4 percent of a fat source raw material, 17-25 percent of a sugar source raw material, 0.1 percent of an antioxidant, 0.5-2.0 percent of multi-vitamin, 0.5-2.0 percent of compound mineral salt and 0-0.2 percent of phagostimulant. The expanded feed provided by the invention obtains the formula of the feed raw materials through a great quantity of experimental verifications according to the nutritional requirement characteristic of Litopenaeus vannamei, and the feed raw materials in the formula are subjected to an expansion treatment process to prepare the expanded feed which meets the nutritional requirement of Litopenaeus vannamei and doesn't contaminate the environment.

Description

technical field [0001] The invention relates to the technical field of feed, in particular to an environmentally friendly extruded feed for Litopenaeus vannamei and a preparation method thereof. Background technique [0002] Litopenaeus vannamei ( Litopenaeus vannamei ) is native to the Pacific coast and belongs to wide-salinity shrimp species, which is one of the most widely cultivated species in the world. It has the advantages of fast growth, high meat production rate, long out-of-water survival time, and strong disease resistance. It is one of the three high-quality shrimp species (Penaeus monodon, Penaeus sinensis and Litopenaeus vannamei) with the highest aquaculture output in the world today. , is also an important seawater and brackish water cultured shrimp in my country. With the continuous expansion of the culture range of Litopenaeus vannamei, the problem of water pollution caused by feed residues and excretion during the culture process has gradually become more...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/18A23K1/16A23K1/10A23K1/14A23K1/175A23K1/00
Inventor 余莹英谢诗玮刘永坚田丽霞
Owner SUN YAT SEN UNIV
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