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Ventilation in Livestock Building Under Tropical Conditions

Dr. Md. Wali Ullah
Department of Agricultural Engineering and Basic Engineering, Bangladesh Agricultural University, Mymensingh.

Karl Terpager Andersen
Department of Agricultural Engineering and Basic Engineering, Bangladesh Agricultural University, Mymensingh.

Abstract/ Executive Summary:

To alleviate heat stress natural ventilation can be used success- fully to a certain extent. But under extreme climatic conditions mechanical ventilation and cooling system become indispensable for optimum output This paper deals with the extent to what natural ventilation can be used depending on climatic conditions, sets up the limitations after which mechanical ventilation must be used and when a cooling system has to be incorporated,

Keywords: Ventilation, Livestock building. Tropical conditions

Location: BAU, Mymensingh

Start Date:

End Date:

Program Area: Animal Health and Management

Commodity: Buffalo

Objectives:

To calculated for maximum possible stack height & outlet area.

Methodology:

Optimal Environmental Conditions Optimum temperatures for different species of animals vary depending on age and purpose. Since high relative humidity creates unhealthy and uncomfortable able environment for livestock, the relative humidity in a beef building should be maintained below 80% . The optimum temperature, air speed and relative humidity for cattle is shown . By increasing the air speed higher temperatures can be accepted. Thus a temperature of 29°C gives no decrease in the milk production if air speed is as high as 2.2-4.5m/s.

Source of Information: Banqladesh J. AgriJ. Sci. 14 t 1) : 53-57: 1987 ISSN 0379-4296

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

An outside temperature of 25^₀C and above is not comfortable for the animals, some sort of cooling system could improve the performance of live stock in hot climates. Evaporative coo ling may be regarded as one of the methods employed. This is suitable in hot climate where temperature is high and relative humidity is low.

Knowledge Management: Journal