Natural ventilation

Natural ventilation optimizes productivity

Ventilation of any dairy housing structure, whether it is a newborn calf shelter or a lactating cow barn, is very important. Emphasis is placed on fresh air. Dairy cows need a constant source of fresh and clean air to achieve their production potential. Wrong thermal environment such as wrong temperature, high moisture levels, manure gases, pathogens and dust concentrations present in unventilated or poorly ventilated structures create an adverse environment for animals. A well planned natural ventilation in barns helps keep your animals comfortable.

DeLaval curtains, panels and chimneys

DeLaval curtains, ventilation panels and chimneys provide you with flexible control of natural air movement: to provide the well-ventilated conditions your cows need for optimal health and productivity throughout the changing seasons – creating a good working environment, no matter what kind of barn you have. These curtains and ventilation panels offer you the choice of manual or automatic control.

Comparison table

Picture	Name	Feature
	DeLaval ventilation curtain CTD Curtain Top Down	This single-piece curtain is fastened at the bottom from a cable and winch system on the top. It allows for initial air entry on the side wall and reduces draft on the animal.
	DeLaval ventilation curtain CRAW Curtain Roll A Way	This curtain constantly remains tight to reduce wind noise. It lowers from the top on a cable and winch system, rolling on to an aluminum tube which is attached to the bottom of the curtain.
	DeLaval ventilation curtain CBRU Curtain Bottom Roll Up	This durable roll-up curtain opens from the bottom to eliminate the need for lift cables and pulleys – meaning quick installation and minimal maintenance. It eliminates water entrapment and protects against sun plus rodent damage.
	DeLaval ventilation curtain PCR  Parlour Curtain Roller	This is the perfect solution for operator comfort in the milking parlour. A divider curtain can be installed to help keep warm air in the parlour area between milkings.
	DeLaval ventilation panel VPC Clear	This panel will ensure a draught-free seal and it operates vertically as a moveable ventilation wall.
	DeLaval ventilation panel VPH Hatches	This panel is natural ventilation in an animal building that will keep temperature and air exchange rate by the regulated ridge vents.
	DeLaval ventilation panel VPI Insulated	This panel is suited for cold temperature and work vertically as a moveable ventilation wall.
	DeLaval ventilation panel VPT Translucent	This panel can be custom made to fit many applications with minimal heat loss in cold weather and have a draught free environment.
	DeLaval chimney C1	This ventilation solution increases the exhaust air’s velocity and removes a greater proportion of respiratory contaminants from the facility. There is little or no opportunity for down-drafting if a damper is installed.

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