CN103330068B - 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 feed used for aquiculture, 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 North America, has diffused to the most of area of China at present, and in recent years along with the demand that catering trade is growing to cray, the scale of propagating artificially of Procambius clarkii is also continuous expansion.Feed many employings prawn, the feed such as Macrobrachium rosenbergii or river crab of existing Procambius clarkii substitute, due to Procambius clarkii Procambius clarkii food composition widely, generally include organic bits, algae, water plant, fish and fish-egg, tend to phytophagous and omnivorousness, utilization rate after above-mentioned existing feedstuff feeding is not high, causes certain waste.And the collection of biological feedstuff and storage inconvenience, the ratio between each component is wayward, is difficult to meet the demand propagated artificially in enormous quantities and accurately throw something and feed, and biological feedstuff is easily mixed with miscellaneous bacteria, causes Procambius clarkii to fall ill, 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 high, 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, be made up of following mass fraction component: meat meal tankage 8 ~ 12 parts, dregs of beans 12 ~ 18 parts, brewer's yeast 0.2 ~ 0.6 part, cotton dregs 6 ~ 10 parts, corn flour 22 ~ 28 parts, fly maggot powder 20 ~ 25 parts, bacillus subtilis 0.8 ~ 1.2 part, 1 ~ 1.5 part, zinc sulfate, 2 ~ 3 parts, calcium phosphate.

The preparation method of above-mentioned freshwater crayfish feed stuff comprises the following steps:

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

2) in the mixture of step 1) generation, brewer's yeast 0.2 ~ 0.6 part is added, normal temperature fermentation 48 hours;

3) by step 2) mixture that produces dries 1 ~ 2 hour in the baker of 75 ~ 90 degree, makes the water content control of mixture 10% ~ 20%;

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

Beneficial effect: the present invention is according to the growth characteristic of Procambius clarkii, optimize feed formula structure, be compounded with nutritional labelings such as comprising protein, fiber, lipid, mineral, and to process by fermentation and the macromolecular substances in mentioned component is divided into the Small molecular being easy to absorb by the step such as oven dry, improve the absorption rate of feed, the bacillus subtilis of adding further reduces the incidence of disease of Procambius clarkii under above-mentioned nutritional labeling there occurs synergy.

Detailed description of the invention

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

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

1) by meat meal tankage 8 parts, dregs of beans 18 parts, cotton dregs 6 parts, corn flour 22 parts, fly maggot powder 25 parts, crosses 100 mesh sieves after pulverizing, gets powder after sieving;

2) in the powder of step 1) generation, brewer's yeast 0.6 part is added, normal temperature fermentation 30 ~ 40 hours;

3) by step 2) mixture that produces dries 1 hour in the baker of 80 degree, makes the water content control of mixture 20%;

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

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

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

Under identical natural conditions, adopt freshwater crayfish feed stuff and the commercial diet of the component of the embodiment 1 of identical injected volume, embodiment 2, embodiment 3 respectively, often organize the nursing quantity 50 of Procambius clarkii, before nursing and after maturation, and body weight long to the body of Procambius clarkii is measured respectively, and calculate the average often organized, wherein growth rate is the difference of opisthosoma length with first body length and the ratio of first body length, rate of body weight gain is that opisthosoma weighs and the difference of first body weight and the ratio of first body weight, and statistics is as following table:

After visible employing freshwater crayfish feed stuff of the present invention is fed, growth rate and rate of body weight gain are all significantly improved.

Claims (1)

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

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

The preparation method of described freshwater crayfish feed stuff, prepares according to following steps:

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

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

3) by step 2) mixture that produces dries 1 ~ 2 hour in the baker of 75 ~ 90 degree, makes the water content control of mixture 10% ~ 20%;

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