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Method for building model for reflecting influences of temperature and photoperiod on utilization rate of pseudobagrus ussuriensis young fish yolk

A technology that affects models and photoperiods, applied in applications, fish farming, climate change adaptation, etc., can solve problems that have not been reported in research

Active Publication Date: 2017-05-31
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In foreign countries, there are reports on the yolk utilization of yellow-headed plaice, white sturgeon, herring, striped perch, and rainbow trout, but there is no report on the yolk body of Ussuri flounder.

Method used

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  • Method for building model for reflecting influences of temperature and photoperiod on utilization rate of pseudobagrus ussuriensis young fish yolk
  • Method for building model for reflecting influences of temperature and photoperiod on utilization rate of pseudobagrus ussuriensis young fish yolk
  • Method for building model for reflecting influences of temperature and photoperiod on utilization rate of pseudobagrus ussuriensis young fish yolk

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The biological materials used in the experiment were the same batch of newly hatched Ussuri yolk sac larvae, which were provided by the experimental base of Fisheries Research Institute of Huai'an City, Jiangsu Province (Wharf Town, Huaiyin District, Huai'an City). Before the test, 100 tails were randomly selected and the long diameter (mm) and short diameter (mm) of the yolk sac were measured using a microscope (power×4).

[0032] The formula used to calculate the volume of the yolk sac is: V=4 / 3·π·(r / 2) 2 R / 2, where V(mm 3 ) is the volume of the yolk sac, r and R are the short and long diameters of the yolk sac (mm), and π is the circumference ratio.

[0033] Design the test scheme according to Table 1. Before the test, put a 2000mL beaker (1000mL of water in it, pH 7, dissolved oxygen 4.5mg.L -1 , ammonia nitrogen -1 ) placed in an artificial intelligence climate box (model RTOP-150Y), and the corresponding temperature and photoperiod were set in advance. After th...

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Abstract

The invention relates to a method for building a model for reflecting influences of temperature and photoperiod on the utilization rate of pseudobagrus ussuriensis young fish yolk, and belongs to the technical field of research of pseudobagrus ussuriensis young fish yolk utilization. The method includes the following steps that pseudobagrus ussuriensis yolk sac larvae which are incubated and come out of membranes are obtained, and the pseudobagrus ussuriensis yolk sac larvae in the normal state are selected at room temperature to serve as test fishes; the test fishes are obtained and divided into multiple experiment factor combinations, and before an experiment, the average volume of yolk sacs of dozens of the larvae which are randomly selected serves as initial data; after testing is finished, 30 larvae are randomly selected in each experiment factor combination, and the sizes of egg diameters of the yolk sacs of the larvae in each experiment factor combination are measured; all the yolk utilization rate and the corresponding temperature and the photoperiod are obtained, the temperature and the photoperiod serve as independent variables, the yolk utilization rates serve as dependent variables, the least square method is used for fitting, and the model for reflecting the influences of the temperature and the photoperiod on the utilization rate of the pseudobagrus ussuriensis young fish yolk is obtained.

Description

technical field [0001] The invention belongs to the technical field of research on yolk utilization of larvae Ussuri larvae, and specifically relates to a method for constructing a model of the influence of temperature and photoperiod on yolk utilization rate of larvae Ussuri larvae. Background technique [0002] Pseudobagrus ussuriensis grows fast, has a wide range of food habits, delicious meat, and no intermuscular spines. It is an excellent top grade for cooking and as a hot pot ingredient. Ussuri catfish is suitable for pond and cage culture. It has few pests and diseases, strong market demand and good price. It is a promising new species in current aquaculture. [0003] Yolk is a material that gradually accumulates during the growth and development of oocytes. The main components of fish yolk are protein and fat, which are necessary nutrients and energy sources for embryonic development and early larval development. Therefore, the consumption and transformation of yol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/10
CPCA01K61/00Y02A40/81
Inventor 王辉朱传坤潘正军常国亮丁怀宇
Owner HUAIYIN TEACHERS COLLEGE
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