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Food digestion law modeling method based on filtering

A modeling method and regular technology, applied in the field of food science, can solve problems such as large errors, unsuitable accurate judgments, and poor fitting

Pending Publication Date: 2020-10-09
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the gastric emptying curve fitting model is established, if the exponential model is directly used for fitting, the error will be large
In addition, direct fitting sometimes does not meet the accuracy requirements, and the fitting degree is not good
[0006] In addition, most of the current food digestion law index fitting methods are direct fitting, which is suitable for rough estimation and not suitable for precise judgment

Method used

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  • Food digestion law modeling method based on filtering
  • Food digestion law modeling method based on filtering
  • Food digestion law modeling method based on filtering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Please refer to figure 1 , Which shows a filtering-based modeling and analysis method of food digestion laws, taking the modelling process of food digestion of Mansoni Squid as an example. Mansoni Squid (Squid for short) is an important marine fishery economy in my country Species, widely distributed in the coastal waters of Fujian and Zhejiang.

[0045] The method includes the following steps:

[0046] Step 101: Establish an exponential model with errors based on the change data of the stomach contents of the squid with the digestion time. The model is as follows:

[0047] F(i)=F 0 e -i +B(z)ε(i) (1)

[0048] Among them, F(i) represents the input data of the contents of the squid stomach obtained from the i-th sampling;

[0049] The sampling method is as follows: prepare multiple boxes of squids with similar weights, the number of squids in each box is the same, such as 10; in the first 24 hours, stop feeding and ensure that the stomach contents of the squids have been completel...

Embodiment 2

[0077] In this example, the accuracy of the present invention is illustrated by comparing the curves of the present invention with the linear fitting of the least square method and the direct fitting of the exponential model.

[0078] Collect the wet weight change data of the stomach contents when the squid digests food according to the method of Example 1. The samples are taken every two hours, and the sampling times are recorded as i. The true value when i=0 refers to the stomach contents when the squid is not digested. Percent wet weight.

[0079] Such as figure 2 As shown, the asterisk represents the true value, the dotted line is the fitting curve fitted by the least square method, the dashed line is the curve fitted directly by the exponential model, and the solid line is the fitting curve obtained by fitting the method of the present invention . The fitting value statistics obtained by the three methods are shown in Table 1 below. The error value, that is, the difference ...

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Abstract

The invention discloses a food digestion law modeling method based on filtering, belongs to the field of food science. The method comprises the steps of establishing an index model with errors according to change data of gastric contents along with digestion duration, obtaining a polynomial after Taylor expansion, standardizing the polynomial as an identification model, and performing iteration through a least square method to obtain a final fitting curve. According to the invention, a breeder can master the digestion habit of cultured organisms, so that a proper amount of feed can be fed at aproper time, the feeding efficiency is improved, and unnecessary waste is reduced.

Description

Technical field [0001] The implementation of the present invention relates to the field of food science, in particular to a filtering-based modeling method of food digestion laws. Background technique [0002] With the passage of eating time, the dry weight and wet weight of food when digested in the stomach will change. A variety of mathematical models can be used to model the emptying of gastric contents, including linear models, square root models, logarithmic models, exponential models, and so on. [0003] In modern aquaculture, objectively and accurately assessing the biological potency of feed ingredients is the main decision-making basis for determining animal nutrition requirements and optimizing feed formulations. [0004] In practical applications, the speed of gastric emptying affects the food intake, food digestibility and physiological metabolism of fish. It is often used to study the feeding rate, ecological conversion efficiency and predation relationship of fish in t...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/067G06Q50/02
Inventor 王子赟肖奕霖徐子恒黄俊翰祝家勋黄鑫
Owner JIANGNAN UNIV
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