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Compound feed for young crabs during their later stage, and its prepn. method

A technology of Scylla serrata and compound feed, which is applied in animal feed, animal feed, climate change adaptation and other directions, can solve problems such as low survival rate of metamorphosis, and achieve the effects of strong predation, low processing cost and good performance.

Inactive Publication Date: 2007-02-14
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of artificial breeding of blue crabs, it was found that the metamorphosis survival rate of late larvae was low, which was closely related to the water quality of the seedlings, and even more closely related to the feed supply at this time. Although the biological bait can better meet its nutritional needs, the biological The bait is difficult to meet the bait requirements of large-scale artificial seedlings. Therefore, according to the nutritional needs and feeding habits of the postlarvae of blue crabs, a special compound feed for postlarvae is developed in order to improve the growth rate of postlarvae and reduce the risk of megalopa due to cannibalism and life habits. Death caused by drastic changes, increase the emergence rate and stability of seedling production, and reduce seedling cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] When preparing the compound feed for Scylla serrata postlarvae, the solid raw materials are crushed and sieved first: the solid raw materials are fish meal, yeast powder, shrimp head powder, puffed soybean meal, corn meal, gluten meal, kelp meal and wheat bran. , through an 80-mesh sieve, and set aside; the crushed and sieved raw materials are weighed according to the mass ratio and mixed step by step with raw materials such as multivitamins, multiminerals, and natural biologically active food attractants, until the solid raw materials The coefficient of variation CV of the mixing uniformity of the mixture 2 PO 4 , Ca(H 2 PO 4 )2·2H 2 O, CaCO 3 , KI mixed. The natural bioactive food attractant is selected from spirulina powder, fish paste and earthworm powder.

[0025] The content of various raw materials according to the mass ratio is fish meal 100, yeast powder 30, shrimp head powder 7.7, puffed soybean powder 20, corn flour 12.5, gluten powder 6, kelp powder 10,...

Embodiment 2

[0027] The preparation process is similar to that of Example 1, the difference being that when the mixture is subjected to conditioning treatment, the steam pressure of conditioning is 450kPa, the conditioning temperature is 85°C, and the humidity of the material after conditioning is 16%. Granulate in an extrusion granulator, and the particle size passes through a 20-mesh sieve; the granulated compound feed is dried and then cooled. The multivitamin is a mixture of VB1, VC, inositol and cellulose. Multivitamins are mixed with VB5, VB6, VB7, VD3 and cellulose. Multiminerals by KH 2 PO 4 , CaCO 3 , MgSO 4 ·7H 2 O, MnSO 4 ·4~6H 2 O, CoCl 2 ·6H 2 O mixed with ferric citrate. The natural bioactive food attractant is selected from earthworm powder and fish paste.

[0028] The content of various raw materials in terms of mass ratio is fish meal 100, yeast powder 45, shrimp head powder 8.5, puffed soybean powder 14.1, corn flour 15.4, gluten powder 5.13, kelp powder 7.7, w...

Embodiment 3

[0030] The preparation process is similar to that of Example 1, the difference is that when the mixture is tempered, the vapor pressure of the tempered is 470kPa, the tempered temperature is 70°C, and the humidity of the material after tempering is 15.5%; the tempered mixture Granulate in an extrusion granulator, and the particle size passes through a 40-mesh sieve; the granulated compound feed is dried and then cooled. The multivitamin is a mixture of VB1, VC, inositol and cellulose. The multivitamin is composed of VB2, VB11, VB12, VE and inositol. Multiminerals by KH 2 PO 4 , CaCO 3 , KCl, AlCl 3 ·6H 2 O, ZnSO 4 ·7H 2 O, CuCl 2 , calcium lactate mixed. The natural bioactive food attractant is selected from fish paste.

[0031]The content of various raw materials according to the mass ratio is fish meal 100, yeast powder 10.3, shrimp head powder 10.3, puffed soybean powder 23.1, corn flour 14, gluten powder 6.5, kelp powder 11.5, wheat bran 12.8, multivitamins 2, V...

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PUM

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Abstract

A mixed forage for the later-phase larvae of scylla is prepared proportionally from protein, fat, fibers, Ca, P, and phosphatide through pulverizing, sieving, mixing, adding peptone, fish slurry and edible oil, mixing, modifying, granulating, drying and cooling.

Description

technical field [0001] The invention relates to a mud crab feed, in particular to a special compound feed for postlarvae of mud crabs and a preparation method thereof. Background technique [0002] Scylla serrata Forskl, 1775 is mainly distributed in the southeast coastal estuary area south of Zhoushan, Zhejiang, my country, as well as in Southeast Asia, Australia, Japan, India, South Africa and other sea areas. It has large individuals, fast growth, and strong adaptability. It has the characteristics of rich nutrition, high market price and good breeding benefits, and is deeply loved by aquaculture producers and consumers. It has become one of the important marine aquaculture species in the southern coastal areas of my country. [0003] With the continuous expansion of the breeding scale of Scylla serrata, the demand for breeding seed is increasing day by day, and the natural seed cannot meet the demand of breeding production. Artificial breeding is the only way to solve th...

Claims

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Application Information

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IPC IPC(8): A23K1/18A23K1/16A23K10/20A23K10/22A23K20/00A23K20/174A23K20/20A23K50/80
CPCY02A40/818
Inventor 艾春香王桂忠李少菁林琼武
Owner XIAMEN UNIV
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