CN101253939A

CN101253939A - Trepang sheet feed stuff and method of preparing the same

Info

Publication number: CN101253939A
Application number: CNA2008100156090A
Authority: CN
Inventors: 朱建新; 曲克明; 兰新涛
Original assignee: Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences
Current assignee: Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences
Priority date: 2008-03-21
Filing date: 2008-03-21
Publication date: 2008-09-03

Abstract

The invention relates to flake-shaped feed for sea cucumber and a preparation method thereof. The ingredients in the feed and the ratios thereof are as follows: sargassum thunbergii dried powder 30%, fish meal 4.5%, fresh kelp 20%with 70% liquid water content, dusty yeast 5%, corn protein 8%, compound enzyme 0.5%, compound vitamin 1%, mineral salt 1%, water 10% and muddy sand 20% with grain diameter of about 100 micron. The preparation method comprises the steps of adding 50% water to the fresh kelp, grinding the kelp with water for 6-7 times through a stuff grinder, adding other ingredients for stirring uniformly after degumming, extruding the mixture of the kelp, the water and other ingredients through a bulking machine at a low temperature of 1-10 DEG C, slicing the mixture into 2mm thick, and drying. The feed in the invention can maintain the shape thereof for more than 24hr without shaping agent; the feed is 2mm thick so that the sea cucumber can easily get and eat the feed and feed consumption of 60% of powder feed is enough; the feed is rich in nutrition, thereby effectively improving the growth rate and the survival rate of the sea cucumber; water changing rate for the flake-shaped feed is only 50% of that for the powder feed, thus avoiding water pollution, reducing water consumption and curtailing production cost.

Description

Trepang sheet feed stuff and preparation method thereof

Technical field

The invention belongs to aquaculture technology, is a kind of research and development and preparation method of trepang sheet feed stuff.

Background technology

Stichopus japonicus (Apostichopus japonicus) belongs to Echinodermata (Echinodermata) Holothuroidea (Holothuroidea), is the important marine products economic animal of northern China.It is coastal mainly to be distributed in Liaoning, Hebei, Tianjin, Shandong and the north, Jiangsu.In recent years, along with the raising of living standards of the people, people's health care consciousness is more and more stronger, and is also increasing to the demand of sea cucumber, and price is soaring gesture steadily, and huge market has stimulated the mushroom development of apostichopus japonicus culture in the coastal various places of northern China.

Unicellular alga, protozoan, bacterium, marine alga fragment, organic debris and the humus etc. of sea cucumber in nature is mainly ingested seabed silt are to connect mud band sand by the tentacle around the mouthpart to grab food together, and are very low to the selectivity of the kind of bait and quality.In breeding process, throw something and feed and most also adopting from the seashore or the ooze of getting that is rich in benthic diatom and organic debris is scraped in the pond; The seawood meal that man-made feeds also only limit to process with mouse tail algae, sea-tangle etc., also useful tapioca flour, trash fish shrimp med and wheat bran etc.The powder material forms of the whole employings of man-made feeds of circulating on the domestic market at present, exactly marine alga etc. is got the raw materials ready and dry the back and be processed into particle diameter at the dry powder below 200 microns with flour mill, add a certain amount of ooze water and pulping full pool spilling head again when throwing something and feeding, Deng feed and ooze slowly sink at the bottom of the pond or on the adherance after, sea cucumber just can ingest.In the actual mechanical process, throwing something and feeding, water body becomes very muddy behind such feed, need stop the supple of gas or steam water purification more than 1 hour feed just can sink at the bottom of the pond, a lot of little feed granules can be suspended in the water always, this not only causes the waste of feed, and very easily ruins water quality; The big shortcoming of another of powder material be amino acid, unrighted acid, solubility vitamin and the part mineral salt etc. in the feed all can be in the process of throwing something and feeding whole molten mistakes in the water, there are some researches show that (" Marine Sciences " Stichopus japonicus in 2005 such as Zhu Wei is to the Primary Study of protein and fatty demand; Chang Zhongyue etc. 2003 " Hebei fishery " influence the factor of stichopus japonicus growth and survival rate): the disappearance of above-mentioned nutrient all has remarkable influence to the speed of growth and the survival rate of sea cucumber.

Summary of the invention

The present invention is a kind of sheet formed feed according to the development of the characteristics of ingesting of sea cucumber, and its nutritional labeling balance and comprehensively meets the nutritional need of sea cucumber, can effectively promote the growth of sea cucumber and improves and culture survival rate; Simultaneously, thoroughly change traditional mode of throwing something and feeding, nutraceutical loss in the waste of minimizing feed and the feed, the cleaning of maintenance breeding water body.

Technology contents of the present invention is;

Its feed formula: mouse tail algae dry powder 30%; Fish meal 4.5%; Bright sea-tangle 20% (water content is greater than 70%); Dusty yeast 5%; Zein 8%; Complex enzyme 0.5%; B B-complex 1%; Mineral salt 1%; Water 10%; The silt particle 20% that particle diameter is about 100 microns.

His preparation method: earlier bright sea-tangle is added 50% water, mill repeatedly 6-7 time through fiberizer, the back of fully coming unstuck adds other raw materials, and mixer stirs; Extrude under 2-10 ℃ cryogenic conditions with the screw rod bulking machine again; Be cut into the thin slice of 2 millimeters of thickness at last with the high speed slicer, air-dry getting final product.

Characteristics of the present invention:

1, the bright sea-tangle of this feed conversion both can be used as the high-quality feed of sea cucumber, also can be used as the adhesive of feed, because of containing a large amount of algins in the sea-tangle, need not to add forming agent in the process of feed, and the feed guarantor reaches more than the 24hr type time.

2, to be processed into thickness be the laminar of 2mm to this feed, and in the process of throwing something and feeding, feed drops on the adherance naturally, is convenient to sea cucumber and grabs food.Feed does not run off, feeding volume 60% of the powder feed of just throwing something and feeding.

3, this feed has added sea cucumber grow necessary amino acid, unrighted acid, vitamin and mineral salt etc., the nutrition that makes feed more comprehensively, science, more reasonable more, can effectively improve the speed of growth of sea cucumber and culture survival rate.

4, this feed almost be can't see the molecule of suspension in the water in the process of throwing something and feeding, and can not pollute water quality; And this feed rate of water exchange in time of throwing something and feeding 50% of powder feed of just throwing something and feeding, this relies on the breeding enterprise that heats up and cultivate for needs, has saved water consumption greatly, has reduced production cost.

The specific embodiment

Be described in detail technology contents of the present invention and using method below by embodiment:

Its batching proportioning: mouse tail algae dry powder-30%; Fish meal-4.5%; Bright sea-tangle-20% (water content is greater than 70%); Dusty yeast-5%; Zein-8%; Complex enzyme-0.5%; B B-complex-1%; Mineral salt-1%; Water-10%; The silt particle-20% that particle diameter is about 100 microns.

Complex enzyme: the complex enzyme formulation that Yinchuan, Ningxia jade of the He family Bioisystech Co., Ltd produces, main effect are to promote to digest and absorb.

B B-complex: the Jin Guyu multidimensional that Fujian Agricultural Univeristy produces, main component Va2000IV/Kg, Vd2000IV/Kg, Vb1800mg/Kg, Vc3000mg/Kg, Ve130mg/Kg, thiamine, riboflavin, pantothenic acid, nicotinic acid, folic acid, choline, inositol etc., it mainly acts on is to promote growth, raising immunity.

Mineral salt: the fishing mineral salt that Jin Haili company of Huanghai Sea aquatic products research institute produces, main component calcium monohydrogen phosphate, ironic citrate, manganese sulfate, phosphorus, KI, zinc sulfate, aluminium chloride, copper sulphate, sodium chloride.

Its preparation method is: earlier bright sea-tangle is added 50% water, mill repeatedly 6-7 time through fiberizer, add other raw materials after fully coming unstuck, mixer stirs; Under 2-10 ℃ cryogenic conditions, extrude slivering with the screw rod bulking machine again; Be cut into the thin slice of 2 millimeters of thickness at last with the high speed slicer, air-dry getting final product.

The using method of this feed: when throwing something and feeding sheet feed stuff directly is sprinkled in the pond and gets final product, day throw something and feed 2 times, day feeding volume by breed sea cucumber body weight 8%.

This feed has carried out 60 days by a definite date the test of throwing something and feeding in base, Inst of Huanghai Sea Marine Products, Chinese Academy of Aquatic Product Science chela mountain on November 15,16 days to 2007 September in 2007, the seed then that used sea cucumber is all cultivated available from the red island former breeding of clam development corporation, Ltd., average body length is 2.90 ± 0.04cm, body weight is 0.49 ± 0.02g, cultivate and adopt natural temperature, temperature fluctuation range is at 15.8-21.6 ℃.Adopt the natural lighting cycle, L: D=12: 12.Test grinds liquid, flood dragon board holothurian feed in contrast with mouse tail algae dry powder, bright sea lettuce, every group establish three parallel.And ascorbic stripping situation in the feed detected.

Result of the test: during off-test, the average body length of sheet feed stuff group sea cucumber is 5.15 ± 0.25cm, and body weight is 2.76 ± 0.39g.Its speed of growth is significantly higher than other each control groups, and (control group average body length is 4.68 ± 0.33cm, and average weight is 2.21 ± 0.39g), illustrates that this feed can obviously promote the growth of sea cucumber.Ascorbic 24hr dissolution rate is 27.3% in the feed, illustrates that feed has good stability in water.

Claims

1, a kind of trepang sheet feed stuff is characterized in that its batching proportioning is: mouse tail algae dry powder 30%; Fish meal 4.5%; The bright sea-tangle 20% of water content 70%; Dusty yeast 5%; Zein 8%; Complex enzyme 0.5%; B B-complex 1%; Mineral salt 1%; Water 10%; The silt particle 20% that particle diameter is about 100 microns.

2, a kind of preparation method who prepares the described trepang sheet feed stuff of claim 1, the method that it is characterized in that it add 50% water to bright sea-tangle earlier, mill repeatedly 6-7 time through fiberizer, and the back of fully coming unstuck adds other raw materials, and mixer stirs; Extrude under 2-10 ℃ cryogenic conditions with the screw rod bulking machine again; Be cut into the thin slice of 2 millimeters of thickness at last with the high speed slicer, air-dry getting final product.