What role do microorganisms play in ruminant nitrogen metabolism? 

Protein requirements are generally _______________________ for young, growing animals. (Hint: Higher or Lower)

All crude protein in a diet is digestible. 

Younger animals have a larger portion of water in their body than older animals do. 

What are two reasons we would want to include fats/lipids in an animal diet?

The most easily digestible carbohydrates are stored in the _______________ of plants. 

The most difficult part of forage for the ruminant animal to digest is? 

What are two ways that proteins can become unavailable or low in feeds? 

For ruminant animals, when volatile fatty acid production is low and causes a limit in the energy that can be used for growth then amino acids are fermented for energy. 

The enzyme needed to break down lipids is ____________________.