Automatic full-closed tier breeding pullet house ventilation method
A ventilation method and fully enclosed technology are applied in the field of poultry breeding to achieve the effects of reducing operation difficulty, reducing production performance and improving egg production rate.
Inactive Publication Date: 2015-04-22
ANHUI RONGDA POULTRY DEV
View PDF7 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The present invention provides a calculable and scientific ventilation method for fully-enclosed layers of laying hen houses, which is different from the current domestic popular operation method relying on the experience and feeling of breeders, and effectively solves the three-dimensional layer that has just emerged in China. The related ventilation problems in cage-laying hen houses reduce the operational difficulty of on-site management personnel, which is of great significance for improving production performance such as egg production rate, mortality rate, feed-to-egg ratio, and reducing respiratory diseases
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0021] Aiming at the above problems, after repeated experiments, we have summarized the following formulas and technical parameters, which effectively solved the above problems:
[0022] Total ventilation volume = (average air temperature T1 in the house - expected body temperature T2) / air cooling factor F × chicken house cross-sectional area S × 3600 seconds
[0023] in:
[0024] T1 is the average temperature of the current chicken house;
[0025] T2 is the desired body temperature;
[0026] S is the cross-sectional area of the chicken house;
[0027] F is the air cooling factor, refer to the following table:
[0028] Current Temperature
35
32
29.5
26
24
21
air cooling factor
8.5
6.5
5.1
4
2.8
2.8
[0029] Through the above formula, taking into account the requirements of negative pressure and minimum ventilation, the number of fans currently required can be obtained.
[0030] experiment:
[003...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an automatic full-closed tier breeding pullet house ventilation method. The ventilation method includes the following steps: (1) determining the total ventilation amount needed by a pullet house; (2) determining the number of draught fans needing to be started according to the needed total ventilation amount, wherein the negative pressure of each draught fan keeps to range from 18 Pa to 22 Pa, the total ventilation amount is equal to a product of a quotient obtained by dividing the air cooling factor F with a difference of the in-house average temperature T1 and expectation sendible temperature T2, the pullet house cross sectional area S and 3600 seconds; in addition, the total ventilation amount is larger than or equal to a product of 1.1m<3> / h, the number of pullets in the pullet house and the average weight of the pullet if kilogram serves as a unit. According to the method, the pullet house management standardization level is improved, and the strength of a worker is reduced; in addition, through optimization of ventilation, the pullet health condition is improved, and the pullet laying rate is improved.
Description
technical field [0001] The invention belongs to the technical field of poultry breeding, and in particular relates to a ventilation method for an automatic fully enclosed layer chicken house. Background technique [0002] At present, the breeding mode of laying hens in automatic fully enclosed layer chicken houses has just emerged in China. The ventilation problems are mainly manifested in the following points: 1. The temperature difference between day and night in winter and spring is too large, and the humidity cannot be balanced. How to coordinate the contradiction between ventilation and warmth. 2. The temperature is too high in summer, how to cool down. 3. How to ensure the ventilation and temperature uniformity of multi-layer chicken cages with up to 3 to 6 layers and even more than 6 layers. 4. How to ensure the front and rear ventilation and uniform temperature of the chicken house. [0003] Most breeding companies use negative pressure ventilation in the breeding ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): A01K31/00
CPCA01K31/00A01K1/0047
Inventor 李海风熊国峰刘家荣程再金
Owner ANHUI RONGDA POULTRY DEV