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A method for evaluating wind speed comfort of broilers and longitudinal ventilation test chamber

A test cabin, comfort technology, applied in the poultry industry, application, poultry cage or house, etc., can solve the problems of difficulty in obtaining suitable wind speed for broilers, large interference of broilers, and large individual differences, and achieve a realistic simulation of broiler breeding environment. , The effect of precise control of wind speed

Active Publication Date: 2019-04-30
INST OF ANIMAL SCI OF CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The comfort of wind speed is closely related to ambient temperature and humidity, stocking density, and broiler age. There are nonlinear, time-varying, and multivariate coupling characteristics among the above variables. Large, individual differences, difficult to effectively obtain the physiological, behavioral and endocrine indicators reflecting the comfort of broilers, so it is difficult to obtain the appropriate wind speed for broilers of different ages and different temperature and humidity at the production site, broilers of different ages need to open Ambient temperature and humidity of the fan

Method used

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  • A method for evaluating wind speed comfort of broilers and longitudinal ventilation test chamber
  • A method for evaluating wind speed comfort of broilers and longitudinal ventilation test chamber
  • A method for evaluating wind speed comfort of broilers and longitudinal ventilation test chamber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: The active area of ​​the cabin body is divided into three interfaces: upper, middle and lower. Through the wind measuring hole on the top of the cabin body 1, the wind speed at nine positions of the three interfaces can be measured respectively. After opening the fan box for ten seconds, The wind speed in the activity area is stable, and the wind speed at the measurement point is measured. The measurement results are shown in Table 1.

[0043] Table 1 The wind speed of each measuring point in the cabin when no load

[0044]

[0045]

[0046] The coefficient of variation of wind speed at 9 points of the section under each wind speed setting value is less than 7%, and the stability is high; when it is 0-2m / s, the wind speed floating value is within ±0.10m / s, and when it is 2-3m / s, The wind speed floating value is within ±0.14m / s.

Embodiment 2

[0047] Example 2: Stability test of the wind field under the chicken test: According to the broiler breeding manual, the wind cannot directly blow the chicken, and the wind speed felt by the chicken is based on the area about 30cm above the back of the chicken, so the test point is 30cm above the back of the chicken The horizontal plane is the interface, and the wind speed measurement experiment is carried out, and the measurement results are shown in Table 2.

[0048] The wind speed of each measuring point in the cabin body when table 2 is filled with chickens

[0049]

[0050] The coefficient of variation of wind speed at each wind speed measurement point is less than 8%, and the stability is high; when 0-2m / s, the wind speed fluctuation value is within ±0.10m / s, and when 2-3m / s, the wind speed fluctuation value is within ±0.15 within m / s.

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Abstract

The invention relates to a method for evaluating the comfort of wind speed for meat chickens and longitudinal ventilation testing cabins. The method comprises the following steps: (1) placing N longitudinal ventilation testing cabins in an artificial climate cabin with same temperature and humidity, selecting a batch of healthy chickens, dividing the healthy chickens into N groups randomly, respectively putting the grouped healthy chickens into cabin bodies of all the longitudinal ventilation test cabins; (2) designing N different wind speeds and starting N longitudinal ventilation testing cabins; (3) carrying out data acquisition of physiological, behavior and endocrine indexes; (4) according to test results, obtaining a dose-effect relationship curve model between the wind speed and all physiological, behavior and endocrine indexes of the meat chickens; (5) according to the dose-effect relationship curve model, in combination with the range of the physiological, behavior and endocrine indexes of the meat chickens when the meat chickens live in a comfortable environment, obtaining a most comfortable wind speed for the meat chickens under the temperature and humidity condition of the environment. The method has the advantages that the wind speed can be accurately adjusted and controlled, and various data of the meat chickens can be acquired under no catching and no stress response.

Description

technical field [0001] The invention relates to an evaluation method and a longitudinal ventilation test chamber, in particular to a method for evaluating wind speed comfort of broilers used in the field of broilers and a longitudinal ventilation test chamber. Background technique [0002] Longitudinal ventilation technology is the most commonly used ventilation method in broiler farms in high temperature seasons in my country. Appropriate wind speed can effectively reduce the temperature in the chicken house, provide a cool environment for broilers, significantly relieve heat stress and reduce mortality, and improve broiler production performance and economic benefits. At present, there is no test device that can accurately control the wind speed, and the determination of the comfortable wind speed of broilers is obtained through production field tests. The comfort of wind speed is closely related to ambient temperature and humidity, stocking density, and broiler age. Ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K31/18A01K31/04A01K45/00
CPCA01K31/04A01K31/18A01K45/00
Inventor 张敏红张少帅冯京海常玉
Owner INST OF ANIMAL SCI OF CHINESE ACAD OF AGRI SCI
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