Tilapia mossambica feed and preparation method thereof

A tilapia and feed technology, which is applied in animal feed, animal feed, climate change adaptation, etc., to achieve the effects of good food attraction, growth promotion of juvenile fish, and comprehensive nutrition

Inactive Publication Date: 2014-08-06
SHANTOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Studies have shown that adding a certain proportion of Enteromorpha powder to chicken feed can deepen the color of eggs, and adding a certain proportion of Enteromorpha powder to

Method used

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  • Tilapia mossambica feed and preparation method thereof
  • Tilapia mossambica feed and preparation method thereof
  • Tilapia mossambica feed and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In order to detect the most suitable addition amount of Enteromorpha, the dry powder of Enteromorpha added 0 (control), 5%, 10%, 15%, and 20% was used to replace fish meal or other plant protein sources to make compound feed for tilapia. The formula is as shown in Table 1 (values ​​are percent by weight), and the preparation steps are as follows:

[0023] ①Collect fresh Enteromorpha, clean it, remove impurities, and dehydrate it with a centrifugal dehydrator. The speed of the centrifugal dehydrator is 3000-5000 rpm, and the centrifugal dehydration is 3-10 minutes.

[0024] ② Preparation of Enteromorpha powder: put the dehydrated Enteromorpha in a drying oven to dry, set the drying temperature to 70-85°C, and set the drying time to 4-5 hours, and control the moisture content of the dried Enteromorpha to 10-15 %, and then crushed to 80-120 mesh with a pulverizer, and set aside.

[0025] ③Mixing: according to the feed formula shown in Table 1, crush the bulk protein sourc...

Embodiment 2

[0029] In order to obtain the best feed formula for tilapia containing Enteromorpha, on the basis of 15% Enteromorpha content, the ratio of raw materials and auxiliary materials was adjusted to make different tilapia compound feeds. The feed formula is shown in Table 2 Shown (values ​​are percent by weight), the preparation steps are the same as in Example 1.

[0030] Table 1

[0031]

[0032]

[0033] Note: a. Secondary meal, rice bran meal, peanut meal, soybean meal, and rapeseed meal are commercially available products, which can be purchased from the domestic raw material market; b. Fish meal is American fish meal, with a crude protein content of 68% and a fish oil content of 9.4%; c. The protein content of Enteromorpha powder is 17.82%, the fat content is 0.48%, the crude fiber is 4.97%, the ash content is 21.13%, the amino acid content (g / 100g, dry weight) is: threonine (Thr)*1.12, valine (Va1 )*1.38, Methionine (Met)*0.28, Isoleucine (Ile)*0.91, Phenylalanine (Ph...

Embodiment 3

[0038] With the formulated feed prepared in Example 1, about 19.5 g of tilapia were raised. Present embodiment is the net cage culture that carries out in fishpond, and culture net cage is 1 * 1 * 1.5m, has cover net, in order to escape and waterfowl. Three parallel experiments were performed in each group, and 30 fish were tested in each parallel experiment. The temperature during cultivation is 20-26°C. After culturing for 60 days, each growth index was measured, and the results of Example 1 are shown in Table 3.

[0039] table 3

[0040]

[0041] Note: The data are mean ± standard error; SGR: specific growth rate; in the peer data, those without the same lowercase letters indicate significant differences between each other (P<0.05)

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Abstract

The invention relates to tilapia mossambica feed and a preparation method thereof. The feed comprises protein source raw material, fat source raw material, sugar source raw material and auxiliary material, and is characterized by further comprising 15 percent of asparagus powder by weight percent, wherein the protein source raw material is selected from a group formed by rice bran, fish meal, peanut meal, bean pulp and rapeseed meal as well as a mixture of the rice bran, fish meal, peanut meal, bean pulp and rapeseed meal; the fat source raw material is selected from a group formed by fish oil and soya-bean oil as well as a mixture of the fish oil and soya-bean oil; the sugar source raw material is wheat middling; the auxiliary material is selected from a group formed by vitamin b complex, mixed mineral substances, soyabean lecithin powder, DL-methionine, monocalcium phosphate, choline chloride, ascorbic acid and sleeve-fish ointment as well as a mixture of the vitamin b complex, mixed mineral substances, soyabean lecithin powder, DL-methionine, monocalcium phosphate, choline chloride, ascorbic acid and sleeve-fish ointment; the feed comprises the following nutritional ingredients in percentage by weight: 35.9-36.8 percent of crude protein, 6.6-6.8 percent of crude fat, and the balance of carbohydrate, crude fibre, ash and moisture. According to the tilapia mossambica feed provided by the invention, the weight gain rate and survival rate of juvenile fish are higher, the use amount of fish meal can be reduced, and protein demand level of fingerling is reduced.

Description

technical field [0001] The invention relates to the field of fish feed, in particular to a tilapia feed containing enteromorpha and a preparation method thereof. Background technique [0002] my country is the world's largest tilapia farming production and exporting country, and artificial compound feed is used throughout the tilapia farming process. At present, most feed production enterprises need to rely on R&D institutions or professional companies to provide feed formula or feed premix due to their own lack of research and development conditions. Protein source accounts for the largest proportion of cost in tilapia feed formula, and its utilization rate is an important link in determining feed cost and quality. In recent years, the price of high-quality animal protein source feed raw materials (represented by fishmeal) has been rising continuously. In order to control the cost of tilapia feed formula within the acceptable range of the market, most feed companies choo...

Claims

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Application Information

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IPC IPC(8): A23K1/18A23K1/14A23K10/30A23K50/80
CPCY02A40/818
Inventor 温小波何小刚朱大世李升康
Owner SHANTOU UNIV
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