You can download Cow Signals A Practical Guide for Dairy Farm Management by Jan Hulsen free in pdf format.
Cows send out signals continuously about their health, well-being, nutrition, and production. The challenge for the dairy farmer is how to interpret these signals and use them. Dutch vet and cow enthusiast Jan Hulsen has drawn on his expertise and wide experience of cows and dairy farmers to write Cow Signals: a richly illustrated farmer’s guide on how to interpret the behaviour, posture and physical characteristics of groups of cows and individual animals. When observing cows it is important not to jump to conclusions immediately, but instead always to ask yourself three questions: What do I see? Why has this happened? What does this mean? If you know what to look for, you can pick up the signals everywhere and any time. Cow Signals will show you how.