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Method for measuring ingestion preference degrees of sea cucumbers

A technology of preference degree and sea cucumber, which is applied in the field of determining the feeding preference degree of sea cucumber, can solve the problems of complex sediment composition and difficulty in weighing, and achieve the effect of simplifying the experimental process, easy acquisition and reducing errors

Active Publication Date: 2011-04-13
中科通和(山东)海洋科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the similar body color of sea cucumber to its habitat, the complex composition of the sediments it feeds, and the difficulty of weighing, the research on its feeding preference is still at a stagnant stage, which has become a bottleneck for the healthy development of the sea cucumber farming industry.

Method used

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  • Method for measuring ingestion preference degrees of sea cucumbers
  • Method for measuring ingestion preference degrees of sea cucumbers
  • Method for measuring ingestion preference degrees of sea cucumbers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The degree of food selection of sea cucumbers to foods with different chlorophyll contents was determined, as follows:

[0043] (1) The body weight of sea cucumbers to be tested is 56.34±12.26g. Before the test, they were raised temporarily in a running water tank, continuously inflated, and stopped eating 24 hours before the test.

[0044] (2) take by weighing respectively CuO, Cr that account for food quality 1-5% (the present embodiment is 3%) 2 o 3 , MnO 2 The powder is used as an indicator, and distilled water is added to prepare a suspension respectively. In the suspension, the indicator mass accounts for 10-30% (20% in this embodiment), and is uniformly dispersed (5-10min) by an ultrasonic cleaner. Set the sediment (food) with high, medium and low chlorophyll content, and mix thoroughly (20-30min).

[0045] In this example, according to the spectrophotometric method described in GB / T 12763.6-2007 "Marine Survey Specification Part 6: Marine Biological Survey", ...

Embodiment 2

[0087] The difference with Example 1 is:

[0088] The degree of food selection of sea cucumbers to foods with different organic matter contents was determined as follows:

[0089] (1) The body weight of sea cucumbers to be tested is 56.34±12.26g. Before the test, they were raised temporarily in a running water tank, continuously inflated, and stopped eating 24 hours before the test.

[0090] (2) Sediment (food) with high, medium and low organic matter content was prepared by using sargassum powder and sea mud in a weight ratio of 2:5, 1:5 and 1:10. Take by weighing respectively CuO, Cr that account for food quality 1-5% (the present embodiment is 4%) 2 o 3 , MnO 2 The powder is used as an indicator, and distilled water is added to prepare a suspension respectively. In the suspension, the indicator mass accounts for 10-30% (15% in this embodiment), and is uniformly dispersed (5-10min) by an ultrasonic cleaner, and correspondingly mixed into the pre- In sediments with high, ...

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Abstract

The invention relates to the technical field of animal breeding, in particular to a method for measuring the ingestion preference degrees of sea cucumbers. The invention solves the problem that the food is difficult to observe and count by adding an indicator to natural foods and sediments difficult to distinguish and easy to leach. In the invention, an element analyzer is used to measure the heavy metal contents in the indicator and calculate the ingestion preference degrees of the sea cucumbers so as to reduce errors existing in traditional methods through manual observation and simple weighing and improve the accuracy and the operability of the experiment. The invention considers food availability, is more objective than a method of singly calculating the proportions of various foods in the inclusions of intestinal tracts and has practical application values.

Description

Technical field: [0001] The invention relates to the technical field of animal breeding, in particular to a method for measuring the feeding preference of sea cucumbers. Background technique: [0002] The type of food an animal chooses is governed by optimality principles. That is, animals forage for food with minimum investment and maximum income. This leads to different degrees of food preference in the presence of multiple foods, showing preference, no preference, or rejection of certain foods. The study of animal feeding preferences helps to study the food sources and feeding habits of farmed animals, and to develop palatable feeds; it also helps to analyze animal feeding habits, evolutionary strategies, and the ability to select food patches in heterogeneous habitats, and then to study animal The distribution and community structure of the species provide the necessary basis for basic ecology, conservation biology and related technologies of ecological farming. [00...

Claims

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Application Information

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IPC IPC(8): A01K61/00G01N33/02
CPCY02A40/81
Inventor 赵鹏赵欢杨红生陈康林承刚
Owner 中科通和(山东)海洋科技有限公司
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