I want to know that what is the application deadline for most of the universities in germany. i want to do in the field of molecular biology/ structural biology.

I WANT TO KNOW THE pHD DATES FOR THE COMING YEAR IN BIOINFORMATICS

how can i get admission in p.h.d. in animal nutrition/production in german universities with scholarships

As far as I understand, for acceptance into a doctoral program in Germany, there is no deadline - you have to find a "Betreuer" (advisor) with whom you would like to work and also determine if you meet the eligibility requirements. This includes language requirements and can vary. If you need additional German language training before commencing your program, there may be deadlines for that.

There is often a DAAD infopage in various countries and languages which briefly explains the application process for a PhD in Germany - you can do a search.