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Method for determining poultry metabolizable energy of corn quickly by utilizing in vitro digestion method

An in vitro digestion and rapid determination technology, applied in applications, animal feed, animal feed, etc., can solve the problems of high instrument requirements, excess energy, and long measurement time, so as to save feed resources, improve accuracy, improve The effect of energy utilization

Inactive Publication Date: 2012-10-10
SHANDONG AGRICULTURAL UNIVERSITY
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Problems solved by technology

However, in the actual feed production, the effective energy value of corn (such as the metabolizable energy of poultry) is used as the main index to measure its feeding value. It is basically impossible to measure the outside, and the formula can only be designed according to the calibrated metabolizable energy value in the feed ingredient database
The metabolizable energy of corn is significantly related to its variety, planting area, processing method, etc., and has a large range of variation. During production, formula design is based on fixed values ​​in the database, which can easily cause excess or insufficient energy in the formulated feed, resulting in production losses.

Method used

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  • Method for determining poultry metabolizable energy of corn quickly by utilizing in vitro digestion method
  • Method for determining poultry metabolizable energy of corn quickly by utilizing in vitro digestion method
  • Method for determining poultry metabolizable energy of corn quickly by utilizing in vitro digestion method

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Effect test

Embodiment 1

[0014] 1. Collect five kinds of corn samples, measure their in vitro dry matter disappearance rate (DMD) respectively according to the method of the present invention, and bring the measured results into the constructed mathematical model AME(kcal / kg)=1499.61×DMD+4320.32, The predicted value of metabolizable energy of maize was obtained (see Table 1).

[0015] In order to evaluate the coincidence between the predicted value and the real value of the metabolizable energy of corn, the measured values ​​of five kinds of metabolizable energy of corn were measured according to the following method: using adult healthy Hailan brown roosters with similar weight, placed in a single cage and a single bird in the environment-controlled metabolic testing room Breeding, the house temperature is 24°C±3°C, the light intensity is 20LX, and the daily light time is 16h. During the non-experimental period, feed the full-price compound diet that can meet the physiological needs of growing hens, ...

Embodiment 2

[0021] 1. In order to verify the practicability of the prediction method constructed by the present invention, and compare it with the method of formulating feed with the metabolizable energy value of corn in the database generally adopted in production, the following tests were carried out.

[0022] Collect 2 corn samples, carry out the prediction of metabolizable energy respectively with the method of the present invention, prepare broiler chicken full-price feed with the predicted metabolizable energy value, as test group (prediction 1# and prediction 2#); control group feed (contrast 1# and control 2#) were formulated according to the data of corn metabolizable energy value in the Chinese Feed Composition and Nutritional Value Table (2010).

[0023] A total of 576 1-day-old AA broiler chickens were used in the experiment, and they were raised flat on the ground bedding. They were randomly divided into 4 groups, each group had 3 replicates, and each replicate had 48 broilers...

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Abstract

The invention relates to a method for determining poultry metabolizable energy of corn quickly by utilizing an in vitro digestion method. The method is characterized in that corn is digested through an in vitro two-step enzymic method (pepsase-pancreatin), a mathematical model on in vitro disappearance rate and metabolizable energy can be built as per the regression analysis on the in vitro disappearance rate and actually-measured metabolizable energy of corn, and the mathematical model can be used for quickly estimating the poultry metabolizable energy of corn. Compared with the data in a used feed ingredient and nutrition value table, the metabolizable energy value of corn, predicted by utilizing the mathematical model built by the invention, can ensure the accuracy of poultry feed mixing well and ensure the playing of production performance.

Description

(1) Technical field [0001] The invention relates to a method for quickly measuring the metabolizable energy of corn and poultry by using an in vitro digestion method, and belongs to the technical field of feed. (2) Background technology [0002] Energy feed is an important part of feed, and the energy level of feed determines the feed intake and normal production performance of animals. Corn is the most important energy feed used in the production of livestock and poultry feed in my country, and its exergy value is the main factor restricting the conversion efficiency of feed. However, in the actual feed production, the effective energy value of corn (such as the metabolizable energy of poultry) is used as the main index to measure its feeding value. It is basically impossible to measure the outside, and the formula can only be designed according to the calibrated metabolizable energy value in the feed ingredient database. The metabolizable energy of corn is significantly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K1/18A23K1/14A01K67/02
Inventor 林海焦洪超宋志刚
Owner SHANDONG AGRICULTURAL UNIVERSITY
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