DOOL INDUSTRIES - WWW.DOOLINDUSTRIES.COM
Dool Industries is a collection of individual companies that together form a 'family of businesses'. The companies are active in the field of supplemental lighting for horticulture, lighting for cattle breeding, top quality assembly and development, energy management and electrotechnology.

HORTILUX SCHRÉDER WWW.HORTILUX.COM
Hortilux Schréder develops and manufactures supplemental lighting installations for the greenhouse horticulture sector. The company has a wide range of fittings, reflectors and lamps and provides made to measure lighting plans.

LICHTTECHNISCH LABORATORIUM R-TECH EN SCHRÉDER - WWW.SCHREDER.COM
Hortilux develops the products that it supplies and these include fittings, reflectors and research into lighting. We have R-Tech, a technical lighting laboratory in Liège, at our disposal where all our products are tested. Our partner Schréder, a member of the Schréder Group GIE, in Belgium, supplies lighting for public roads such as tunnels and bridges, throughout the world.

RAYMAX - WWW.RAYMAX.NL
Raymax is a specialist in servicing and metering growing lights including reflectors, replacement lamps and various components. They know how to measure the returns from supplemental lighting installations using advanced equipment.

PL LIGHT - WWW.PLLIGHT.COM
PL Light supplies supplemental lighting installations to the Canadian and North American markets. It is a sister organisation of Hortilux Schréder and is part of the Hortilux Schréder Group.

AP NEDERLAND - WWW.APNEDERLAND.NL
AP Nederland is a specialist in the mass production assembly of electrical wiring and equipment such as switch and control cabinets, armatures and voltage distribution systems. Its modern business premises, high tech equipment, efficiency and skilled and motivated workforce guarantee optimum product quality and price control that is fully geared to its clients' requirements.

E&L SOLUTIONS - WWW.EL-SOLUTIONS.COM
E&L Solutions is a supplier of lighting, cables, energy panels and lighting components.

AVEL - WWW.AVEL.NL
Avel designs, assembles and produces electronics and printed circuits.

STICHTING WOORD EN DAAD - WWW.WOORDENDAAD.NL
Hortilux supports the Woord en Daad (Word and Deed) organisation which works to combat third world poverty. This organisation, together with local partners in the South, wants to make a difference in the lives of the poor who have little chance, by giving them the instruments with which they can build a hopeful future. Woord en Daad does this from a Christian perspective under the motto: Called to make a difference.

VARIOUS SITES WITH INFO CONCERNING THE EFFECTS AND INPUT OF LIGHTING IN THE LIVESTOCK INDUSTRY:
http://www.cobb-vantress.com/Publications/ManagementGuides.aspx
Management Guides from Cobb containing information for improving the performance and production of broilers.

http://www.cps.gov.on.ca/english/plans/E5000/5602/5602L.pdf
Information about lighting programmes for broilers and laying hens with a comparison of the different light sources.

http://www.omafra.gov.on.ca/english/livestock/dairy/facts/info_photoperiod.html
Summary of a study by Jack Rodenburg (OMAF, Canada) about the relationship between light and the management of dry cows.

http://www.livestocktrail.uiuc.edu/photoperiod/
Website of Professor Geoff Dahl who has conducted a lot of research into the influence of light on dairy cattle and is still active in this field.

http://www.agrinutrition.com/art00031.shtml
Manual of lighting programmes using 16 hours of light at 150 - 200 lux level for dairy cattle by a dairy cattle spokesperson from the United States.

http://www.moomilk.com/archive/prod-18.htm
More information concerning lighting for dairy cattle with sample calculations of its economic feasibility.

http://extension.oregonstate.edu/catalog/html/pnw/pnw551/
Comprehensive explanation of the different aspects involved in lighting for dairy cattle, not just economic but also a lot of details concerning the effects and reactions of the cows themselves.