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Preparation method of feed capable of protecting liver of GIFT oreochromis niloticus and boosting immunity of GIFT oreochromis niloticus and feeding method of feed

A technology for tilapia and immunity enhancement, applied in animal feed, animal feed, fish farming, etc., can solve the problems of serious pollution, single method, and inability to improve disease resistance.

Inactive Publication Date: 2014-04-23
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI +2
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Problems solved by technology

[0004] In order to overcome the shortcomings of the existing tilapia anti-streptococcal disease infection method, which is single, the effect is poor, the pollution is serious, and the disease resistance cannot be improved from the tilapia itself

Method used

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  • Preparation method of feed capable of protecting liver of GIFT oreochromis niloticus and boosting immunity of GIFT oreochromis niloticus and feeding method of feed
  • Preparation method of feed capable of protecting liver of GIFT oreochromis niloticus and boosting immunity of GIFT oreochromis niloticus and feeding method of feed
  • Preparation method of feed capable of protecting liver of GIFT oreochromis niloticus and boosting immunity of GIFT oreochromis niloticus and feeding method of feed

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Embodiment Construction

[0011] 1. Feed preparation. Select 3-5g juveniles of Gifu tilapia and put them into the pond at a density of 2000 / mu. Prepare feed for juvenile fish, including 33% crude protein and 8% crude fat. When the weight of Gifu tilapia reaches more than 150g, it is formulated into fish stage feed, which contains 28% crude protein and 7% crude fat.

[0012] Second, the addition of chitosan in the feed. The amount of chitosan added in the feed for juvenile fish is 1.5%. According to the principle of 15ml per 1kg of feed, chitosan is firstly diluted with water and then evenly sprinkled on the feed. Form into granules, place in a cool place to air-dry, and store at 4°C for later use. The amount of chitosan added to adult fish feed is 1%, and chitosan is added to the feed according to the principle of 10ml per 1kg of feed, and the feed processing and preservation methods are the same as those for juvenile fish.

[0013] 3. Feed feeding. In the juvenile stage, feed 3 times a day (7:30,...

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Abstract

The invention discloses a preparation method of feed capable of protecting the liver of GIFT oreochromis niloticus and boosting the immunity of the GIFT oreochromis niloticus and a feeding method of the feed. The preparation method comprises the steps of feed preparation and chitosan addition. The feeding method of feed comprises the step of feed feeding. After the GIFT oreochromis niloticus is fed for 9 weeks by adopting the feeding method, the immunity index of the GIFT oreochromis niloticus is obviously increased, the liver stress is decreased, the oxidative stress resistance capacity of the liver is enhanced, the activity of superoxide dismutase, catalase, glutathione and glutathion peroxidase in the liver is obviously improved, and the level of the malonaldehyde is lowered; the level of glucose, cholesterol and low-density cholesterol in serum is obviously lowered; the level of alkaline phosphatase and high-density cholesterol is obviously increased. The chitosan added to the feed is metabolites generated by fermentation of microorganisms without antagonism and is small in molecular weight, easy to absorb, low in cost and relatively easily available. After the feed is taken by the GIFT oreochromis niloticus, the feed is easy to digest and absorb by the GIFT oreochromis niloticus, and residues are barely remained in bodies; the feed has a very good immunopotentiator effect and meets the requirements on novel green healthy additives.

Description

technical field [0001] The invention belongs to feed formulation technology for aquaculture, and in particular relates to a feed preparation and feeding method capable of improving the immunity and anti-infection ability of Streptococcus iniae of Gifu tilapia. Background technique [0002] Since 2009, tilapia streptococcal disease has broken out in many provinces and cities in southern my country. The incidence rate is as high as 40%, and the mortality rate is close to 100%. Streptococcal disease has been called "H1N1" in the tilapia world by farmers. . In many breeding areas, it is common to see farmers who have lost their fortunes due to disease outbreaks. The occurrence of diseases has seriously dampened the enthusiasm of farmers for farming, and has also caused huge economic losses to the local tilapia industry. [0003] In recent years, with the in-depth study of streptococcal disease by aquatic workers, some effective methods have been proposed. One is to improve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/18A23K1/16A01K61/00
CPCY02A40/81
Inventor 强俊黄永徐跑何杰李瑞伟朱志祥
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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