Chapter 1

 Review of Nutrients and Digestion 

   The title implies that this chapter is a review, and hopefully it is.    We  need to be able classify nutrients and understand their role in the animal so that we can make better informed decisions about managing nutritional programs of animals. Be able to categorize nutrients as shown in Figure 1-1, page 4 of your textbook.   We also need to know the terminology.   I know there is a lot of information in this chapter, but hit the highpoints and concentrate on the study questions at the end of the chapter and the information covered in the practice quizzes that are shown below. Know the information well enough to correctly answer questions like the ones at the end of the chapter.

 Chapter Goals   

• Define the nutrient needs of animal. (know the six basic nutrients found in feeds)
• Classify nutrients according to the chemical analysis scheme (Figure 1-1, p.4)
• Explain the difference in six basic nutrients (i.e., how they function in the animal, thus their need by the animal; know the difference enough not confuse a water-soluble vitamin with an amino acid)
• Identify symptoms of nutrient deficiency or toxicity (learn the ones that are covered in by the questions at the end of the chapter -section III-A, page 66)
• Identify parts and function of animal digestive systems 
• Compare differences and similarities of digestive systems (know that the type of digestive system an animal has is what primarily determines what type of feeds are appropriate for that animal; e..g, hay is appropriate for cattle, sheep, and horses, but not for swine, poultry, dogs, and cats.... why?)

Students should:

• Read through Chapter 1 in your textbook.
• Go through the PowerPoint presentation (optional)
• Take online practice quizzes.
• Practice taking Exam 1 on Blackboard.  

Students must: (for online students)

• Take Web Quizzes 1-3. Refer to the schedule for the sections of the chapter each quiz covers.

Links 

• PowerPoint presentation         use this presentation to you help you focus on the most important material in the chapter.         
• Digestive Physiology Information - excellent resource

Study Aids

These activities are provided to assist the student with learning the subject matter.  Because you will not be in a classroom per se, you will need to take advantages of  these study aids to help you understand the material.  PLEASE PLEASE do not hesitate to come by my office, Email or call me if you need help!   It's my job!  I want YOU to be successful in this course!

• Nutrient Classification 1

• Nutrient Classification 2  

• Protein Terminology and Protein Quality, refer to pp. 29-33.

• Protein Utilization by the Ruminant - refer to page 30-31.

• Review of digestive systems - take online quizzes to help you learn anatomy of the different digestive tracts.

• Study Questions and Problems, Chapter 1 pp. 64-67.

Challenge Problem:

Diagnose and treat the condition below.  Explain the underlying metabolic causes of the signs and the abnormal chemical profile shown below.  Discuss a protocol to prevent this disease.

The following signs are observed in a dairy cow during early lactation.

• milk production below normal
• acetone smell to breath
• losing weight

The chemical profile of the blood:

• higher than normal blood urea nitrogen
• elevated ketones