CN103330068A - Procambarus clarkii feed and preparation method therefor - Google Patents

Abstract

The invention discloses a procambarus clarkii feed and a preparation method therefor. The feed comprises 8-12 parts of meat and bone meal, 12-18 parts of soybean meal, 0.2-0.6 parts of beer yeasts, 6-10 parts of cottonseed meal, 22-28 parts of corn flour, 20-25 parts of housefly larvae powder, 0.8-1.2 parts of bacillus subtilis, 1-1.5 parts of zinc sulfate, and 2-3 parts of calcium phosphate. The preparation method for the feed comprises steps of mixing, crushing, fermentation, drying and addition of funguses and minerals. The procambarus clarkii feed is advantaged by high utilization rate and low incidence of disease.

Description

A kind of freshwater crayfish feed stuff and preparation method thereof

Technical field

The present invention relates to a kind of used for aquiculture feed, and relate to the preparation method of this feed, be specifically related to a kind of freshwater crayfish feed stuff and preparation method thereof.

Background technology

Procambius clarkii is commonly called as red crayfish, cray, belongs to the former Astacus of Crustachia Decapoda Astacidae.Procambius clarkii originates in the North America, has diffused to the most of areas of China at present, and along with the catering trade demand growing to cray, the scale of propagating artificially of Procambius clarkii also is continuous expansion in recent years.The feed of existing Procambius clarkii adopts feeds such as prawn, Macrobrachium rosenbergii or river crab to substitute more, because the food composition of Procambius clarkii Procambius clarkii is very extensive, generally include organic bits, algae, water plant, fish and fish-egg, tend to phytophagous and omnivorousness, utilization rate behind the above-mentioned existing feedstuff feeding is not high, has caused certain waste.And the collection of biological feedstuff and store inconvenience, the ratio between each component is wayward, is difficult to satisfy the demand of propagating artificially in enormous quantities and accurately throwing something and feeding, and biological feedstuff is mixed with assorted bacterium easily, causes the Procambius clarkii morbidity, and culture efficiency is not ideal.

Summary of the invention

Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of utilization rate height, the freshwater crayfish feed stuff that the incidence of disease is low.

Technical scheme: for solving the problems of the technologies described above, a kind of freshwater crayfish feed stuff provided by the invention, formed by following mass fraction component: 8～12 parts of meat meal tankages, 12～18 parts of dregs of beans, 0.2～0.6 part of brewer's yeast, 6～10 parts of cotton dregs, 22～28 parts of corn flour, 20～25 parts of fly maggot powders, 0.8～1.2 part of bacillus subtilis, 1 ~ 1.5 part in zinc sulfate, 2～3 parts in calcium phosphate.

The preparation method of above-mentioned freshwater crayfish feed stuff may further comprise the steps:

1) with 8～12 parts of meat meal tankages, 12～18 parts of dregs of beans, 6～10 parts of cotton dregs, 22～28 parts of corn flour, 20～25 parts of mixing of fly maggot powder, and be crushed to 80～100 orders;

2) in the mixture that step 1) produces, add 0.2～0.6 part of brewer's yeast, normal temperature fermentation 48 hours;

3) with step 2) mixture that produces dried 1～2 hour in the bakers of 75～90 degree, made the water content control of mixture 10%～20%;

4) the oven dry product with step 3) is cooled to normal temperature, adds 0.8～1.2 part of bacillus subtilis, 1 ~ 1.5 part in zinc sulfate, 2～3 parts in calcium phosphate.

Beneficial effect: the present invention is according to the growth characteristic of Procambius clarkii, optimize the feed formula structure, the compound nutritional labelings such as protein, fiber, lipid, mineral that comprise, and handle by fermentation and step such as oven dry is divided into the macromolecular substances in the mentioned component the little molecule that is easy to absorb, improved the absorption rate of feed, further the incidence of disease of Procambius clarkii has taken place to have reduced under the synergy in the bacillus subtilis of adding in above-mentioned nutritional labeling.

The specific embodiment

Embodiment 1: the freshwater crayfish feed stuff of present embodiment comprises: 8 parts of meat meal tankages, 18 parts of dregs of beans, 0.6 part of brewer's yeast, 6 parts of cotton dregs, 22 parts of corn flour, 25 parts of fly maggot powders, 1.2 parts of bacillus subtilises, 1.5 parts in zinc sulfate, 3 parts in calcium phosphate.

The freshwater crayfish feed stuff of present embodiment adopts following steps to be prepared from:

1) with 8 parts of meat meal tankages, 18 parts of dregs of beans, 6 parts of cotton dregs, 22 parts of corn flour, 25 parts of fly maggot powders are pulverized the back and are crossed 100 mesh sieves, get the back powder that sieves;

2) in the powder that step 1) produces, add 0.6 part of brewer's yeast, normal temperature fermentation 30～40 hours;

3) with step 2) oven dry 1 hour in the bakers of 80 degree of the mixture that produces, make the water content control of mixture 20%;

4) the oven dry product with step 3) is cooled to normal temperature, adds 1.2 parts of bacillus subtilises, 1.5 parts in zinc sulfate, 3 parts in calcium phosphate.

Embodiment 2: the freshwater crayfish feed stuff of present embodiment comprises: 10 parts of meat meal tankages, 15 parts of dregs of beans, 0.4 part of brewer's yeast, 8 parts of cotton dregs, 25 parts of corn flour, 23 parts of fly maggot powders, 1 part of bacillus subtilis, 1.2 parts in zinc sulfate, 3 parts in calcium phosphate.

Embodiment 3: the freshwater crayfish feed stuff of present embodiment comprises: 12 parts of meat meal tankages, 12 parts of dregs of beans, 0.2 part of brewer's yeast, 10 parts of cotton dregs, 28 parts of corn flour, 20 parts of fly maggot powders, 0.8 part of bacillus subtilis, 1 part in zinc sulfate, 2 parts in calcium phosphate.

Under identical natural conditions, adopt freshwater crayfish feed stuff and the commercially available feed of component of embodiment 1, embodiment 2, the embodiment 3 of identical injected volume respectively, 50 of the nursing quantity of every group of Procambius clarkii, before nursing with after the maturation, respectively body length and the body weight of Procambius clarkii are measured, and calculate every group average, wherein growth rate is the opisthosoma length ratio long with first body with the difference of first body length, rate of body weight gain is the ratio of opisthosoma difference heavy and body weight just and first body weight, statistics such as following table:

As seen after adopting freshwater crayfish feed stuff of the present invention to feed, growth rate and rate of body weight gain all are significantly improved.

Claims (2)

1. a freshwater crayfish feed stuff is characterized in that, described feed is made up of following mass fraction component:

8～12 parts of meat meal tankages, 12～18 parts of dregs of beans, 0.2～0.6 part of brewer's yeast, 6～10 parts of cotton dregs, 22～28 parts of corn flour, 20～25 parts of fly maggot powders, 0.8～1.2 part of bacillus subtilis, 1 ~ 1.5 part in zinc sulfate, 2～3 parts in calcium phosphate.

2. the preparation method of a freshwater crayfish feed stuff is characterized in that may further comprise the steps

1) with 8～12 parts of meat meal tankages, 12～18 parts of dregs of beans, 6～10 parts of cotton dregs, 22～28 parts of corn flour, 20～25 parts of mixing of fly maggot powder, and be crushed to 80～100 orders;

2) in the mixture that step 1) produces, add 0.2～0.6 part of brewer's yeast, normal temperature fermentation 30～40 hours;

3) with step 2) mixture that produces dried 1～2 hour in the bakers of 75～90 degree, made the water content control of mixture 10%～20%;

4) the oven dry product with step 3) is cooled to normal temperature, adds 0.8～1.2 part of bacillus subtilis, 1 ~ 1.5 part in zinc sulfate, 2～3 parts in calcium phosphate.