Page 3 of articles about ventilation in Articles

Genetic selection over the last few decades has resulted in pigs with better feed conversion and leaner carcasses, but it has also led to pigs with a decreased ingestion capacity.

In order to try to control the environment, it is important: - Be able to evaluate it. - Be familiar with the needs of different types of animals. - Implement corrective measures to adapt to those needs.

Man is possibly the only animal capable of living in practically all places in the world, regardless of the climate. This is due to his capacity to construct buildings to isolate himself from the climate however extreme it may be, maintaining an environment which allows him to survive. As domestic animals live together with man, they have to take advantage indirectly of this capacity.

The most important way of examining the conditions of a building is using ones senses, since these might tell you immediately, whether an environmental problem is present.

In natural conditions, there are seasonal fluctuations of availability of food and the earliness or delay in the onset of breeding is related to food levels.

Tail biting is a typical non-specific reaction to a deterioration of the environmental conditions.

The PHP 160 billion hog industry is the second leading contributor to Philippine agriculture coming in second to rice despite being almost exclusively without government subsidy.

A pig building might be ventilated in several ways, which might be categorized according to the method that is used for moving the air through the building. A first categorization includes natural ventilation and mechanical ventilation.

The purpose of a ventilation system is to remove excessive moisture and heat produced by animals in order to maintain an indoor climate within certain limits

A good air quality is required for maintaining animal health and welfare and for providing a good working environment for the staff.

This article explains the most important principles of environmental control in the pig barns, such as ventilation control, maintenance of temperature within the thermoneutral zone of the animals and of the relative humidity levels inside the barns.