Agricultural Science Home Page Mission and Goals of Agricultural Science Areas of Study and Minors in Agricultural Science Research in Agricultural Science Agricultural Science Curriculum Careers in Agriculture The University Farm Agricultural Science Student Experiences Agricultural Science Faculty and Staff Science Division Home Page The Home Page of Truman State University Contact me! AGSC 423: PHYSIOLOGY OF LACTATION

Dr. Glenn R. Wehner
3076 Magruder Hall
 785-4593
gwehner@truman.edu


COURSE DESCRIPTION

A study of the dairy industry including breed development, milk secretion, breeding, herd management, nutrition, and facilities for operating a dairy farm.

COURSE OBJECTIVES

  1. To acquaint the student with the importance of dairy in our animal industry and the total economy including past trends and possibilities for the future.
  2. To develop student understanding of the process of milk secretion, the genetic, reproductive and nutritional characteristics of the dairy animal particularly as it differs from other farm animals.
  3. To introduce the student to management problems related to the operation of a dairy farm and present some solutions to these problems.
COURSE OUTLINE

Role of dairy cattle in world food production
  1. Production of animal protein
  2. Value of milk for human nutrition
History of dairy industry
  1. Role of American agriculture
  2. Trends in production and consumption of milk
  3. Breeds of dairy cattle and their characteristics
  4. Breeds of dairy goats
Anatomy of the mammary system
  1. Gross anatomy of mammary gland and associated structures
  2. Histology of mammary gland
  3. Growth and development
Physiology of milk secretion
  1. Secretory process
  2. Types of secretions
  3. Factors affecting quantity and duration of secretion
Factors affecting yield and composition of milk
  1. Composition of milk
  2. Effect of individual cow
  3. Dietary factors
  4. Disease and management effects
The milking process
  1. Milking machines
  2. Proper operation and management
  3. Milking systems
Genetics
  1. Basics of inheritance
  2. Genetic progress
  3. Record keeping
  4. Cow selection
  5. Bull selection
  6. Genetic abnormalities
Reproduction
  1. Basic anatomy and physiology
  2. Reproductive efficiency
  3. Artificial insemination
  4. Ova transfer
  5. Reproductive diseases
  6. Reproductive herd management
Nutrition of the Dairy cow
  1. Fundamentals of ruminant nutrition
  2. Nutrient requirements
  3. Feedstuffs
  4. Feed formulation
  5. Feeding systems and management
  6. Nutrient deficiencies and metabolic disorders
Herd records
  1. Types
  2. Use in selection/culling
  3. Use for feeding level
Buildings and equipment
  1. Housing systems
  2. Milking Barns
  3. Milk room
  4. Feed storage
  5. Veterinary care
  6. Calf barns
  7. Goat barns and equipment
Raising dairy calves
  1. Digestive system of calf
  2. Milk replacers and starter rations
  3. Calfhood diseases
  4. Growing replacements
  5. Veal and beef steer production
Milk marketing
  1. Methods
  2. Government regulations
METHODS

The class will meet three days each week for one lecture each day. Occasional films and slides will be used to supplement lectures. Students will prepare and present oral reports about current topics in the dairy industry.

EVALUATION
  1. Student reports 15%
  2. Three one-hour exams 60%
  3. Comprehensive final 25%
SUPPLEMENTARY

Schmidt, G.A. and L. D. Van Vleck. Principles of Dairy Science, W.H. Freeman and Co., San Francisco, CA 1974

"Hoards Dairyman"