Method for determining feeding time of hucho taimen fish fries

A feeding method and technology for jellyfish, which are applied in fish farming, application, climate change adaptation, etc., can solve the problems of increasing the amount of bait fed, inability to determine the feeding period, and high breeding costs, and achieve bait conversion. The effect of improving feed conversion rate and reducing feeding amount

Inactive Publication Date: 2014-04-23
HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problem that the optimal feeding period cannot be determined in the existing way of feeding larvae, which leads to an increase in the amount of bait to be fed, high breeding costs, and water pollution, and provides a method for larvae of larvae feeding method

Method used

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  • Method for determining feeding time of hucho taimen fish fries
  • Method for determining feeding time of hucho taimen fish fries

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specific Embodiment approach 1

[0010] Specific embodiment one: the present embodiment determines the method for throwing and feeding time of crocodile larvae, according to the following steps: one, when the larvae of crocodile crocodile is cultivated to the floating stage, randomly get 8 to 10 whole fish with Bouin's solution each time Fix for 46-50h, then carry out paraffin embedding, and obtain the wax blocks embedded with the larvae; 2. Put the wax block into a slicer and perform continuous slices according to the transverse direction of the larvae, and the thickness of the paraffin slices is 6 ~8μm; 3. H.E. stain the paraffin sections, seal the sections with neutral gum, dry them and place them under a microscope to observe the development of taste buds in the oropharynx of the larvae. If the taste buds are fully developed, they are larvae The best time for feeding; if the taste buds described in step 3 are fully developed, the specific performance is that the taste buds are composed of three types of ce...

specific Embodiment approach 2

[0011] Specific embodiment two: the difference between this embodiment and specific embodiment one is: in step one, get 9 tails of whole fish at random each time and fix them with Bouin's solution for 48h. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0012] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the thickness of the paraffin section in step 2 is 7 μm. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method for feeding hucho taimen fish fries, and aims to solve the problems of incapability of determining the optimal feeding period, increased amount of fed bait, high breeding cost and water pollution exiting in the conventional feeding method of the hucho taimen fish fries. The method comprises the following steps of: 1, determining an optimum time for feeding the hucho taimen fish fries; and 2, feeding at the temperature of 7.0-16.2 DEG C at the optimum time for feeding the hucho trainmen fish fries, namely 20th day of floating. After determining the optimal feeding time of the hucho taimen fish fries, the feeding capacity of the bait can be reduced, and further, the breeding cost is reduced, and the water pollution is reduced. The method is used for breeding the hucho taimen.

Description

technical field [0001] The invention relates to a method for feeding larvae of jellyfish. Background technique [0002] Zheluo fish is a famous and precious large cold-water salmon family fish. Its meat is tender and delicious, and its economic value is relatively high. However, due to environmental pollution, overfishing and other factors in recent years, the resources of the salmon are almost exhausted. Therefore, it is very necessary to protect the jellyfish. At present, the breeding technology of cymbidium has been initially successful and has been promoted nationwide. However, there are a series of technical problems in the process of cultivating cyprinus larvae. It is very critical to determine the best time to feed bait during the transition from endogenous nutrition to exogenous nutrition for larvae. There is a corresponding relationship between the feeding of fish and the development of digestive organs, and how fish use their feeding sensory organs to "taste" th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 王常安徐奇友尹家胜许红赵志刚罗亮
Owner HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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