At the Max Planck Institute in Germany, Groneberg and colleagues researched one of the neural bases for behavior in Danio rerio. They showed that larval zebrafish execute approach reactions followed by a form of positive taxis and gradual motion damping in response to water flows. That might sound complicated, but what it basically means is that zebrafish larvae are able to detect minute movement in the water and respond in a stereotypical way.
Today, we are proud to have another guest blogger! Laura Webb has done some interesting research at Wageningen University (The Netherlands) on the dietary preferences of calves and honored us with a blog post! Also, there is a free case study available at the end of this post!
Calves, whether raised for milk or meat production, are typically fed diets that differ from diets of feral cattle herds. For example, veal calves receive large quantities of milk replacer and solid feed with little structure to chew on, while dairy calves are weaned off milk early on and receive mostly solid feed. Diets typically fed to calves can cause a number of welfare problems, including poor stomach health as well as stress due to the inability to perform highly-motivated natural behaviours such as rumination or sucking on a teat. Furthermore, there is much research indicating that animals, and in particular ruminants, are able to select a balanced diet and maximise their comfort. So why not let calves choose?