阅读说明：本技术 一种宝石鲈鱼配合饲料及其制备方法 (Compound feed for jade perches and preparation method thereof ) 是由 舒锐 尹立鹏 黄江 于 2019-12-20 设计创作，主要内容包括：本发明公开了一种宝石鲈鱼配合饲料及其制备方法,其中该饲料含有鱼油、豆油、鱼粉、小麦淀粉、棉籽蛋白、发酵营养因子六种原料,所述原料中鱼油、豆油、鱼粉、小麦淀粉、棉籽蛋白、发酵营养因子的重量份之比为3:0.5:(10-20):(10-12.5):(2.5-5):(10-15)；本发明制备得到的饲料,不易出现碎粉和沉底,植物蛋白源利用率高,可以有效降低饲料中鱼粉的含量,促进宝石鲈鱼快速生长。(The invention discloses a compound feed for jade perch and a preparation method thereof, wherein the feed contains six raw materials of fish oil, soybean oil, fish meal, wheat starch, cottonseed protein and fermentation nutritional factors, and the weight ratio of the fish oil, the soybean oil, the fish meal, the wheat starch, the cottonseed protein and the fermentation nutritional factors in the raw materials is 3:0.5 (10-20): 10-12.5): 2.5-5): 10-15; the feed prepared by the invention is not easy to generate crushed powder and sediment, has high utilization rate of vegetable protein source, can effectively reduce the content of fish meal in the feed, and promotes the rapid growth of the jade perch.)

1. The compound feed for jade perches is characterized by comprising six raw materials of fish oil, soybean oil, fish meal, wheat starch, cottonseed protein and fermentation nutritional factors, wherein the weight ratio of the fish oil, the soybean oil, the fish meal, the wheat starch, the cottonseed protein and the fermentation nutritional factors in the raw materials is 3:0.5 (10-20): 10-12.5): 2.5-5): 10-15.

2. The compound feed for jade perches as claimed in claim 1, wherein the weight parts of the raw materials are as follows: 6 parts of fish oil, 1 part of soybean oil, 20-40 parts of fish meal, 20-25 parts of wheat starch, 5-10 parts of cottonseed protein and 20-30 parts of fermentation nutritional factors.

3. The compound feed for jade perches as claimed in claim 2, wherein the weight parts of the raw materials are as follows: 31 parts of fish meal, 22 parts of wheat starch, 8 parts of cottonseed protein, 28 parts of fermentation nutritional factors, 6 parts of fish oil and 1 part of soybean oil.

4. The compound feed for jade perch as claimed in claim 1, wherein said fermented nutritional factors are fermented from soybean meal and corn gluten meal.

5. The compound feed for jade perch as claimed in claim 4, wherein said fermented nutritional factors are prepared by the following steps: adding water into soybean meal powder and maize yellow powder to prepare a mixed solution, adding fermentation liquor into the mixed solution, placing the mixed solution at the temperature of 20 ℃ for aerobic fermentation for 1-2 hours to obtain a fermentation nutritional factor, and drying the fermentation nutritional factor until the water content is 6-8%.

6. The compound feed for jade perch as claimed in claim 5, wherein said mixture is prepared by adding 50ml of water and 0.5g of corn gluten into 1g of soybean meal.

7. The compound feed for jade perch as claimed in claim 5, wherein said fermentation broth is added in an amount of 0.5% by volume of the mixed solution.

8. The compound feed for jade perch as claimed in claim 5, wherein said fermentation broth is prepared by adding 0.8g of active dried yeast powder to 25ml of warm water, said warm water being 20 ℃.

9. The compound feed for jade perch as claimed in claim 2, wherein said soybean meal powder and said corn yellow powder are pulverized to 300 mesh before being mixed.

10. The method for preparing compound feed for jade perch as in claim 1, which comprises the following steps:

1) weighing fish meal, fermentation nutritional factors, cottonseed protein and wheat starch according to the weight parts of the raw materials, uniformly mixing, and carrying out superfine grinding treatment to obtain a mixture, wherein the mixture is crushed to 500 meshes;

2) weighing fish oil and soybean oil according to the weight ratio of the raw materials, mixing and storing for later use;

3) regulating the mixture to 20-25% of material moisture content by high-temperature steam at 200 ℃;

4) then placing the mixture processed in the step 3) at 100 ℃ for extrusion granulation, and then placing the obtained granulated feed at 60 ℃ for drying;

5) cooling the pellet feed to 30-40 deg.C, vacuum spraying the mixed fish oil and soybean oil in step 2), and cooling to obtain the final product.

Technical Field

The invention belongs to the field of feeds, and particularly relates to a compound feed for jade perches and a preparation method thereof.

Background

The jade perch, also called jade grouper and jade fish, originally produced in fresh water area of Australia, is the only famous fresh water fish species distributed in Australia at present.

In recent decades, the aquaculture industry has been rapidly developed, the price of fish meal has increased, the profit margin of the feed has decreased, and people are forced to use vegetable protein sources to replace the fish meal in weever feed.

However, the vegetable protein source causes the fish to have reduced food intake, reduced energy utilization efficiency and reduced growth rate due to the imbalance of amino acids and the presence of anti-nutritional factors. How to promote the culture of the jade perches through a feed way becomes a difficult problem to be solved urgently by technical personnel in the field.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a compound feed for jade perches and a preparation method of the compound feed for jade perches.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the compound feed for jade perches is characterized by comprising six raw materials of fish oil, soybean oil, fish meal, wheat starch, cottonseed protein and fermentation nutritional factors, wherein the weight ratio of the fish oil, the soybean oil, the fish meal, the wheat starch, the cottonseed protein and the fermentation nutritional factors in the raw materials is 3:0.5 (10-20): 10-12.5): 2.5-5): 10-15.

Preferably, the raw materials comprise the following components in parts by weight:

6 parts of fish oil, 1 part of soybean oil, 20-40 parts of fish meal, 20-25 parts of wheat starch, 5-10 parts of cottonseed protein and 20-30 parts of fermentation nutritional factors.

Preferably, the raw materials comprise the following components in parts by weight:

31 parts of fish meal, 22 parts of wheat starch, 8 parts of cottonseed protein, 28 parts of fermentation nutritional factors, 6 parts of fish oil and 1 part of soybean oil.

Preferably, the fermentation nutritional factors are prepared by fermenting the raw materials of soybean meal powder and corn gluten meal.

Preferably, the preparation method of the fermentation nutrient factor comprises the following steps: adding water into soybean meal powder and maize yellow powder to prepare a mixed solution, adding fermentation liquor into the mixed solution, placing the mixed solution at the temperature of 20 ℃ for aerobic fermentation for 1-2 hours to obtain a fermentation nutritional factor, and drying the fermentation nutritional factor until the water content is 6-8%.

Preferably, the mixed solution is prepared by adding 50ml of water and 0.5g of maize yellow powder into 1g of soybean meal powder.

Preferably, the addition amount of the fermentation liquid is 0.5% of the volume of the mixed liquid.

Preferably, the fermentation liquor is prepared by adding 0.8g of active dry yeast powder into 25ml of warm water, wherein the warm water is 20 ℃.

Preferably, the soybean meal powder and the corn yellow powder are crushed to 300 meshes before being mixed.

Preferably, the preparation method of the compound feed for jade perches comprises the following specific steps:

1) weighing fish meal, fermentation nutritional factors, cottonseed protein and wheat starch according to the weight parts of the raw materials, uniformly mixing, and carrying out superfine grinding treatment to obtain a mixture, wherein the mixture is crushed to 500 meshes;

2) weighing fish oil and soybean oil according to the weight ratio of the raw materials, mixing and storing for later use;

3) regulating the mixture to 20-25% of material moisture content by high-temperature steam at 200 ℃;

4) then placing the mixture processed in the step 3) at 100 ℃ for extrusion granulation, and then placing the obtained granulated feed at 60 ℃ for drying;

5) cooling the pellet feed to 30-40 deg.C, vacuum spraying the mixed fish oil and soybean oil in step 2), and cooling to obtain the final product.

Compared with the prior art, the invention has the following technical advantages:

first, the source and quality of the protein in the feed is of paramount importance to the growth of carnivorous fish. The fermentation nutrient factor provided by the invention is beneficial to the digestion and absorption of jade perches, is matched with cottonseed protein as a vegetable protein source, has high utilization rate, and effectively reduces the content of fish meal in the feed.

Secondly, the decrease of the animal protein content in the feed affects the cohesiveness of the feed, and crumbling and sinking of the feed are likely to occur. According to the invention, through reasonable proportioning of the raw materials and treatment by a specific process, the obtained feed particles are stable in shape and are not easy to break and sink.

The feed prepared by the invention is not easy to generate crushed powder and sediment, has high utilization rate of vegetable protein source, not only effectively reduces the content of fish meal in the feed, but also can promote the rapid growth of the jade weever.

Detailed Description

In order to better illustrate the objects, technical solutions and technical effects of the present invention, the present invention will be further described with reference to specific embodiments. It should be noted that the sources of raw materials and process parameters, etc., which are not described in detail in the present invention, are all regarded as being obtained by the conventional techniques in the art.