What the textbooks don’t tell you about… Curtain-blind operation

Curtains or blinds have grown in popularity in the more temperate / warmer parts of the world because they are simple and cheap to install, but they tend to be poorly designed and badly operated on too many pig farms. A few notes from my own experiences may be of help? By John Gadd Curtains on 90% of the farms are designed for a daytime temperature band of 26°C to 34°C, where a reasonable if gentle flow of air is required across the pigs, along with spray cooling. Under these conditio