Puffed aquatic feed and preparation method thereof

A technology for aquatic feed and aquatic high-temperature-resistant enzymes, applied in animal feed, animal feed, applications, etc., can solve the problems of low feed utilization rate, polluted water environment, etc., and achieve the effect of improving digestibility

Active Publication Date: 2013-07-17
长沙三旺饲料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide an extruded aquatic feed with high fish body digestibility, less feed waste, good stability in water, and less water pollution and its prep...

Method used

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  • Puffed aquatic feed and preparation method thereof
  • Puffed aquatic feed and preparation method thereof
  • Puffed aquatic feed and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: Preparation of extruded aquatic feed

[0049] Referring to accompanying drawing 1, the present invention provides a kind of preparation method of extruded aquatic feed, % by weight ratio w / w, concrete preparation method is as follows:

[0050] (1) 33% of the fermented dephenolized cottonseed meal, 24% of the fish meal, 7% of the soybean meal, 8% of the sunflower meal, and 19% of the flour raw materials are cleaned, coarsely crushed, and passed through a 40-60 mesh sieve Carry out a mixing, get the raw material rough mix stand-by.

[0051] (2) Superfinely pulverize the rough mixture of the above raw materials, pass through a 80-100 mesh sieve, and then mix with 0.5% multivitamins for fish, 2.0% mineral feed additives, 1.5% calcium dihydrogen phosphate, 2.0 % stone powder, 0.65% wheat bran, and 0.05% aquatic thermostable enzyme for secondary mixing.

[0052] (3) Evenly add 30% (w / w) water to the secondary mixture obtained in step (2) for tempering, then ...

Embodiment 2

[0057] Embodiment two: the preparation of extruded aquatic feed

[0058] Referring to accompanying drawing 1, the preparation of expanded aquatic feed is as follows:

[0059] (1) Raw material receiving and cleaning: Take 24 kg of fish meal, 33 kg of fermented dephenolized cottonseed meal, 7 kg of soybean meal, 8 kg of sunflower seed meal, and 19 kg of flour to remove impurities and clean up.

[0060] (2) Coarse crushing: raw materials are coarsely crushed and passed through a 40-60 mesh sieve.

[0061] (3) Ingredients mixing: Take the above raw materials and mix them once.

[0062] (4) Superfine pulverization: move the above-mentioned mixture into the superfine pulverization bin, carry out superfine pulverization, and pass through a 80-100 mesh sieve.

[0063] (5) Mixing of secondary ingredients: mix the above-mentioned superfine grinding mixture with 0.5 kg of multivitamins for fish, 2.0 kg of mineral feed additives, 1.5 kg of calcium dihydrogen phosphate, 2.0 kg of stone...

Embodiment 3

[0069] Embodiment 3: Determination of in vitro digestibility of extruded feed

[0070] The pepsin-trypsin two-step method is used to determine the in vitro digestibility of a substance in the feed, and make appropriate adjustments. Three parallel samples were made for each sample.

[0071] The test data were processed by SPSS 16.0 software commonly used in the field for one-way analysis of variance (ANOVA), and the Tukey multiple comparison method was used to analyze the significance of the difference in the mean (P<0.05). Values ​​are expressed as mean ± standard deviation.

[0072] 1. Selection of optimal enzyme dosage for in vitro digestion test

[0073] 1.1. Selection of the most suitable amount of pepsin

[0074] Pepsin with different enzyme activity units (120IU, 180IU, 240IU) was selected, and the fermented dephenolized cottonseed meal was used as the substrate to carry out the digestion test. The results obtained are shown in Figure 2. According to the effects of d...

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Abstract

The invention discloses a puffed aquatic feed and a preparation method thereof. The preparation method comprises the steps of removing impurities of fermented dephenolized cottonseed meal, cottonseed meal, bean pulp, sunflower seed meal and flour and cleaning, and carrying out coarse crushing and screening; mixing according to ratios and carrying out superfine grinding; carrying out the second time of crushing and screening; carrying out secondary mixing with a compound vitamin for fish, a mineral feed additive, monocalcium phosphate, stone powder, wheat bran and aquatic high-temperature-resisting enzyme; and adding water to uniformly temper and transferring a mixture into a double-screw-rod extrusion bulking machine to obtain a puffed feed, wherein the rotary speed of screw rods is 65r/min, the feeding speed is 30r/min, a feeding section of the temperature of a machine barrel is controlled at 90 DEG C, a middle section is controlled at 105 DEG C, a discharging section is controlled at 125 DEG C and spraying temperature is controlled at 85-90 DEG C. The puffed aquatic feed disclosed by the invention has the advantages of high fish digestion rate, less feed waste, good stability in water and slight pollution to a water body, and can be widely applied to the production of freshwater fish puffed aquatic feeds.

Description

technical field [0001] The invention relates to the field of aquatic feed and its processing technology. Specifically, the present invention relates to the technical field of an extruded aquatic feed and its preparation process. Background technique [0002] Extrusion technology was mainly used for pet food in the feed industry in the early stage, and was gradually applied to the processing of aquatic feed and livestock feed. Extruded aquatic feed is a feed with great application prospects. Its main features are good stability in water, high digestibility, less waste of feed, and less pollution to water bodies. The feed goes through a process of high temperature and high pressure in the expansion chamber to form a kind of bulky and porous granules. The extruding process can improve the gelatinization degree of starch in the feed, so it is easier to be digested and absorbed by aquatic animals than hard pellet feed. At the same time, the process of high temperature, high p...

Claims

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Application Information

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IPC IPC(8): A23K1/18A23K1/14A23K1/10
Inventor 李三省张风梅周延崔思寒王亮闫卫疆王成韩远广
Owner 长沙三旺饲料有限公司
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