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Compound feed for river crabs

A technology of compound feed and mixed feed, which is applied in the direction of animal feed, animal feed, molding or processing of animal feed, etc. It can solve the problems of unfavorable digestion and absorption of river crabs, etc., and achieve the enhancement of body immunity, low production cost, and good palatability Effect

Inactive Publication Date: 2019-02-15
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this river crab feed uses a lot of straw, which contains a variety of non-starch polysaccharides, which have anti-nutritional effects and are not conducive to the digestion and absorption of river crabs.

Method used

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  • Compound feed for river crabs
  • Compound feed for river crabs
  • Compound feed for river crabs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The basic feed is composed of the following parts by weight: 8 parts of soybean meal, 5 parts of cottonseed meal, 12 parts of grass insect meal, 9 parts of spirulina powder, 13 parts of fish meal, 6 parts of alpha-starch, 2.5 parts of fish oil, 1.5 parts of perilla seed oil, 3 parts of sunflower oil, 4 parts of amino acid premix, 3 parts of vitamin premix, 10 parts of minerals, 0.5 parts of astaxanthin, 0.5 parts of beta-carotene, 1 part of beta-glucan, 1 part of lecithin , 0.3 part of choline chloride, 0.8 part of sodium dihydrogen phosphate, 0.5 part of table salt.

[0048] The high-protein additive is composed of the following parts by weight: 45 parts of grass insect powder, 40 parts of fish meal and 15 parts of spirulina powder.

[0049] High-fat additives include: 39 parts of fish oil, 20 parts of flaxseed oil, and 41 parts of sunflower oil.

[0050] How to prepare feed:

[0051] 1) pulverize the feed raw materials, mix them according to the principle of superpo...

Embodiment 2

[0065] Verification of Growth Performance Index of River Crab

[0066] Taking the feed pellets of the present invention prepared in Example 1 as the test group and the finished feed pellets prepared in Comparative Example 1 as the control group, the river crabs were randomly divided into 2 groups, two parallel groups in each group, and fed for 7 months. During the period from March to mid-June, the group mixed high-protein supplements and basic feed with a weight ratio of 1:9, and fed the crabs; from mid-June to August, they were fed the basic feed; after August, the crabs were given reproductive molting After shelling, the high-fat additive and basal feed were mixed with a weight ratio of 1:9, and the crabs were fed; the Chinese herbal supplements and the basal feed were mixed evenly, and the crabs were fed twice a month for three days each time; the control group During the entire breeding period, the control diet was fed, and the rest were the same.

[0067] After the test...

Embodiment 3

[0079] Content verification of flavor amino acids and unsaturated fatty acids in crab muscle

[0080] The feeding procedure was exactly the same as in Example 2. After the test, the contents of flavor amino acids and unsaturated fatty acids in the crab muscle were determined, and the results are shown in Table 2.

[0081] Amino acids were determined in accordance with GB / T5009.124-2003 by acid hydrolysis (tryptophan was hydrolyzed with NaOH); fatty acids were determined in accordance with GB / T17377-2008 by gas chromatography.

[0082] Table 2 Contents of flavor amino acids and unsaturated fatty acids in crab muscle

[0083]

[0084]

[0085] As can be seen from Table 2, the content of taste-flavored amino acids and unsaturated fatty acids in the crab muscle of the compound feed for feeding the test group are all greater than those of the control group, illustrating that the present embodiment compound feed significantly improves the taste-flavored carbamic acid content ...

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Abstract

The present invention discloses a compound feed for river crabs. The compound feed comprises a base feed, a high protein additive, a high fat additive and a Chinese herbal medicine additive; based onthe weight of the high protein additive, the high protein additive comprises 1-50% of tylorrhynchus powder, 1-50% of fish meal and 1-20% of spirulina powder. The present invention also discloses a method for feeding the artificially cultured river crabs and a preparation method of the compound feed for the river crabs. Beneficial effects are as follows: a high protein additive feed is used in a growing stage of the river crabs, the basic feed is used in a molting stage of the river crabs and a high fat additive feed is used in a sexual maturity stage of the river crabs to significantly increase growth in an early stage and crab ovary and digestive gland accumulation in a late stage of the river crabs; the tylorrhynchus powder and spirulina powder are used to partially replace fish meal; besides, in the whole breeding period, eucommia barks and radix achyranthis bidentatae are used to prevent diseases, enhance the immunity of the river crabs and further promote growth. The compound feedfor the river crabs is low in production costs, balanced in nutrients and good in palatability, enables the river crabs to be fast in growth in the early stage and more in crab ovary and digestive gland accumulation in the late stage, and is high in breeding economic benefits.

Description

technical field [0001] The invention relates to the field of aquatic feed processing, in particular to river crab compound feed. Background technique [0002] The scientific name of the river crab is Chinese mitten crab, also known as lake crab, crab, hairy crab, etc. It belongs to the arthropod door Crustacea Soft Nympha subclass Decapoda Reptile suborder Fang crab family mitten crab genus. River crab has the advantages of fast growth, tender meat, delicious taste and high economic value. In recent years, my country's crab aquaculture industry has developed rapidly. [0003] At present, fish meal is used as high-quality protein as high-quality protein or vegetable protein such as soybean meal and cotton meal as substitute protein in artificially farmed river crab feed, so as to reduce the price of feed and improve the economic benefits of farming. However, fish meal and fish oil are in short supply, and the price is high, which is not conducive to economic benefits. Moreov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K10/10A23K10/20A23K10/22A23K10/30A23K20/158A23K40/10A23K50/80
CPCA23K10/10A23K10/20A23K10/22A23K10/30A23K20/158A23K40/10A23K50/80Y02A40/818
Inventor 夏立萍张建设李彬
Owner ZHEJIANG OCEAN UNIV
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