A nutritional control method to reduce the melanization of the eyeless side of flounder flounder in industrialized culture

A control method, the technology of flounder flounder, applied in application, animal feed, additional food elements, etc., can solve the problem of redundant accumulation of viscera, achieve the effect of increasing commodity prices, optimizing application amount, and saving feed production costs

Inactive Publication Date: 2021-09-21
TIANJIN BOHAI SEA FISHERIES RES INST
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

It is well known that vitamin A and vitamin D3 are of great significance to the growth, development, and reproduction of seawater fish. However, if there are too many fat-soluble vitamins in the feed, redundant nutrients will accumulate in the viscera.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In 2018, we conducted a comparative test of different additions of vitamin A 3 in compound feed of tongue sole in Xingshenghai Freshwater Aquaculture Co., Ltd., Yangjiabo Town, Hangu, Tianjin, and adjusted its body color. During the experiment, the water temperature was 19-21℃, the dissolved oxygen content was greater than 7mg / L, the salinity was 27% o, the pH was 7.5-7.8, and the feeding growth experiment lasted for 8-12 weeks. Select 600 juvenile semi-smooth tongue sole with an initial body weight of about 3.80g±0.25g, and divide them into 5 groups on average, with 3 fish in parallel in each group, and feed vitamin A content of 2000, 5000, 8000, 12000, 15000IU / kg, and vitamin D3 as 4000IU / kg constant 5 kinds (A1-A5) experimental feed, the experiment lasted for 24 weeks. After half a year of breeding experiment, the results showed that: the abnormal melanization rate of half-smooth tongue sole in groups A1 and A2 was 47.6% and 56.4%, and the growth rate of group A2 was...

Embodiment 2

[0022] During the same period in 2018, we conducted a comparative test of different additions of vitamin D3 in compound feed for half smooth tongue sole in Xingshenghai Freshwater Aquaculture Co., Ltd., Yangjiabo Town, Hangu, Tianjin, and adjusted its body color. During the experiment, the water temperature was 19-21℃, the dissolved oxygen content was greater than 7mg / L, the salinity was 27% o, the pH was 7.5-7.8, and the feeding growth experiment lasted for 8-12 weeks. Select 600 juvenile half-smooth tongue sole with an initial weight of about 4.20g±0.20g, and divide them into 5 groups on average, with 3 fish in parallel in each group, and feed them with vitamin D3 content of 1000, 3000, 6000, 9000, 12000IU / kg, and vitamin A as 5000IU / kg constant 5 kinds (A1-A5) experimental feed, the experiment lasted for 24 weeks. After half a year's breeding test, the results showed that: the abnormal melanization rate of half-smooth tongue sole in groups A1 and A2 was 47.6% and 44.8%, and...

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PUM

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Abstract

The invention relates to a nutritional control method for reducing the blackening of the eyeless side of flounder and flounder in industrialized culture, which belongs to the feed order. Different nutritional elements in the feed, such as vitamin A and vitamin D3, can affect the body color of flounder and flounder. . Excessive supplementation of vitamin A and vitamin D3 in feed will induce different degrees of melanization of the eyeless side of flounder flounder. A nutritional control method for reducing the occurrence of melanization of the eyeless side of flounder and flounder in industrialized culture. On the basis of ensuring the normal nutritional requirements for the growth and development of flounder flounder, by controlling the amount of vitamin A and vitamin D3 added to the feed content and reduce the proportion of melanization of the eyeless side of flounder flounder, thereby increasing the commodity value of flounder flounder and improving the production efficiency of flounder flounder.

Description

technical field [0001] The invention belongs to the field of aquatic healthy breeding, and in particular relates to a nutrition control method for reducing the melanization of the eyeless side of flounder flounder in industrialized farming. Background technique [0002] The high proportion of eye-side melanization in the industrial culture of flounder flounder occurs in different degrees in different regions during production. The abnormal body color of flounder flounder is the result of the combined effect of internal heredity and external environment. Heredity is the basis, while environment and nutrition are the conditions and causes of abnormal body color. The commercial value of blackened individual fish is low, which affects market sales. The problem of blackening of the eyeless side is widely perplexing many aquaculture enterprises, and it is an urgent problem to be solved in the front line of fishery production. [0003] It is known that different nutrients such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K20/174A23K50/80
CPCA23K20/174A23K50/80
Inventor 张博鲍宝龙贾磊赵娜刘克奉马超刘张倩
Owner TIANJIN BOHAI SEA FISHERIES RES INST
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