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Compound feed for micropterus salmoids

A technology for compound feed and largemouth bass, applied in the field of fish feed, can solve the problems of large price fluctuation, destruction of nutrients, low feed conversion rate, etc., and achieve environmental protection, low excrement, and high bioavailability. Effect

Inactive Publication Date: 2007-08-15
PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, there are following defects in directly feeding trash fish: (1) trash fish, especially stale trash fish are very easy to carry bacteria, which easily causes disease in cultured fish; rotten trash fish can also produce Toxin, toxic to farmed fish
(2) The nutritional components of offal fish are not comprehensive, and some of the nutritional components of offal fish that are not fresh are destroyed, and it is easy to cause malnutrition when directly fed
(3) The nutrient composition of trash fish is unbalanced, and the feed conversion rate of direct feeding is low and the waste is large, which not only causes a great waste of natural resources, but also pollutes the breeding environment
(4) Trash fish is difficult to preserve, easy to deteriorate, and inconvenient to use
In addition, and the supply has seasonal changes, the price fluctuates greatly, and the cost of breeding is difficult to estimate
Especially in recent years, with the decline of wild resources, the price of trash fish has been rising, resulting in an increase in the cost of breeding year by year
At the same time, feeding trash fish puts a lot of pressure on natural resources and the ecological environment, which seriously affects the further development of the largemouth bass aquaculture industry. It is imperative to develop compound feed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0006] Example 1: Effects of feeding largemouth bass with compound feeds

[0007] 1 experimental fish

[0008] The largemouth bass used in the experiment was obtained from Xingwang Farm in Shunde District, Foshan City.

[0009] 2 Taming

[0010] Because largemouth bass is a carnivorous fish, largemouth bass must be domesticated before the experiment so that it can eat compound feed. The specific taming process is: trash fish (1 day) → 3 / 4 trash fish + 1 / 4 artificial feed (2 days) → 1 / 2 trash fish + 1 / 2 artificial feed (2 days) → 1 / 4 miscellaneous fish+3 / 4 artificial feed (2 days)→artificial feed.

[0011] 3 experimental groups

[0012] Fish with basically the same specifications, healthy and no injuries were selected for the experiment. The selected fish were randomly divided into 10 groups, 95 in each group, and placed in a 2×2×0.8-meter net cage for the experiment, and the net cage was placed in an indoor cement pool.

[0013] 4 test feed

[0014] The experimental fe...

example 2

[0027] Example 2: The impact of feeding chilled trash fish and compound feed on the water quality of aquaculture

[0028] Breeding largemouth bass in an indoor aquarium for one month (using circulating water, without changing the water during the whole process), feeding chilled offal fish and compound feed respectively, the chemical oxygen demand (COD) and phosphate ( PO 4 - -P), total phosphorus (TP), total nitrogen (TN), ammonia nitrogen (NH 4 + -N), nitrate (NO 3 - -N), nitrite (NO 2 - -N) and other indicators were tested. The results showed that the indicators of the two kinds of feeds were increased in varying degrees, but after feeding for one month, the water quality indicators of the miscellaneous fish group were much higher than those of the chilled group: COD, PO of the miscellaneous fish group 4 - -P, TP, TN, NH 4 -N, NO 3 - -N, NO 2 - N was 25.3mg / L, 2.4mg / L, 2.28mg / L, 3.44mg / L, 2.91mg / L, 0.52mg / L, 0.075mg / L, the COD, PO 4 - -P, TP, TN, NH 4 -N, NO...

example 3

[0029] Example 3: Effects of feeding compound diets and trash fish on body composition of largemouth bass

[0030] 1 Take the largemouth bass that has been cultured in Example 1, and take the wild largemouth bass caught in nature, and the seabass that are relatively mature in the development of artificial feed at the same time, and carry out routine nutritional composition analysis and amino acid composition analysis.

[0031] 2 Kjeldahl method was used for protein determination; Soxhlet extraction method was used for fat determination; dry ashing method was used for ash content determination; atmospheric pressure drying method was used for water content determination; amino acid was carried out by Hitachi 835-50 high-speed amino acid analyzer .

[0032] 3 See Table 2 and Table 3 for the results.

[0033] Table 2 Nutrient composition of several seabass muscles

[0034] Chilled Sea Bass

[0035] Table 3 Amino acid content of several kinds of perch muscle (content ...

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PUM

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Abstract

The invention relates to a fish fodder which comprises the following constituents (by weight percent): white fish meal 40.0-45.0, red fish meal 5.0-10.0, soybean waste 12.0-15.0, peanut bran 9.0-10.0, brewer's yeast 5.0-10.0, high grade flour 10.0-15.0, sea fish oil 4.0-5.0, soyabean oil 1.0-2.0, choline chloride 0.3-0.6, composite vitamins 0.5-1.0, mixed mineral salts 4.0-5.0, and the nutriment compositions include crude protein 48.25, and crude fat 11.56, ash 15.69 and water 5.89.

Description

Technical field: [0001] The invention belongs to the field of fish feed, in particular to a compound feed for largemouth bass, which can be used to raise largemouth bass instead of chilled offal fish. Background technique: [0002] Largemouth bass (Micropterus salmonoides), also known as California perch and black perch, belongs to Perciformes, sunfish family, and is native to rivers and lakes in North America. It has the reputation of "freshwater grouper" and is a wide-temperature carnivorous Fish are carnivorous warm water fish. It can survive in the water temperature range of 1°C to 36°C, and starts to feed above 10°C, and the optimum growth temperature is 20°C to 30°C. In the natural environment, it feeds on small fish, shrimps and aquatic insects. Because of its fast growth, strong adaptability, less disease, easy to catch, low temperature resistance, less thorny meat, delicious taste, rich nutrition, tender meat and beautiful appearance, it is very popular among prod...

Claims

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Application Information

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IPC IPC(8): A23L1/18A23L1/00A23K10/18A23K10/22A23K20/158A23K20/174A23K20/20A23K50/80
CPCY02A40/818
Inventor 王广军吴锐全谢骏
Owner PEARL RIVER FISHERY RES INST CHINESE ACAD OF FISHERY SCI
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