4803 syllabus 06Mex

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4803 syllabus 06Mex Powered By Docstoc
					                                          ANSI 4803 – Spring 2005
                                       Animal Growth and Performance
                                            COURSE OUTLINE

Instructors:     Rodney D. Geisert          Robert P. Wettemann
                 114E Animal Science        114 C Animal Science
                 Oklahoma State University  Oklahoma State University, Stillwater OK, 74078

       Several courses in animal science or a course in animal physiology.

Course Objectives:
To develop an understanding of factors that influence prenatal and postnatal growth in farm animals.
To evaluate endocrine control of body functions and to explore how alterations in the endocrine system might alter
animal performance and/or composition.
To evaluate environmental effects on animal production.

Course Outline:
I. Introduction
       A. Definitions of growth

II. Prenatal Growth and Development
       A. Early embryonic development
          1. Fertilization
          2. Imprinting
          3. Cloning
          4. Embryo differentiation

       B. Placental function
          1. Materna1 recognition of pregnancy
          2. Implantation
          3. Placental types

       C. Fetal development and growth

       D. Parturition

III. Endocrine Control of Growth
       A. Endocrine system
              1. Hormones and receptors
              2. Hypothalamus – pituitary axis
              3. Growth hormone
              4. Transgenic animals

IV. Environmental effects on growth

V. Factors influencing prenatal growth and development
               a. Genetic, Maternal, Nutrition of Mother, Litter size, Sex
VI. Endocrine modification of growth and performance
      A. Pituitary and hypothalamic hormones
      B. Thyroid
      C. Parathyroid
      D. Pancreas
      E. Adrenal
      F. Ovary
      G. Testis
      H. Growth promoters – steroid hormones
            1. Mechanisms of action
            2. Effects on daily gain, feed efficiency and composition
            3. Compounds in use today; application
            4. Regulation of the use of growth promoters
      I. β-Adrenergic agonists
      J. Buller steers

VII.   Postnatal Growth and Development
       A. Rate of growth and development of various tissues
       B. Growth patterns
              1. Cattle
              2. Swine
       C. Factors influencing growth and development
              1. Nutrition
                      a. Effects of restriction
                      b. Composition of gain
                      c. Lactation
                      d. Compensatory growth
              2. Sex
              3. Genetics

Exams and Quizzes:
Four exams and several quizzes will be given.

Grading Procedure:

Grades:              Four 100-point exams                 400 points
                     Quizzes and written assignments      200 points
                     Written report                       100 points

Attendance: Necessary

Text: There are no books to purchase. A classical text, New concepts of Cattle Growth by R.T.Berg and R. M.
Butterfield is available on line at Each week a
reading assignment from a reference book or a research paper in a scientific journal will be assigned. The
assignment will be related to topics discussed in class.
                                                   ANSCI 4803
       Select one of the topics listed below to prepare a written report on recent research (published
       since Jan. 2001) and previous research related to growth.

1.    Select a topic and formulate an objective or question to be answered by your library research (check in:
      J. of Animal Science, J. of Dairy Science, Reproduction, Animal Reproduction, Canadian J. of Animal
      Science, Growth, Endocrinology, or other journals).
2.    Turn in your objective, or question to be answered, to Dr. Geisert by June 13, 2006. List at least three
      research reports in refereed journals that will be used. Write a report using the following format:
      A. Introduction – What problems exist and what were the researchers trying to find out?
      B. Results – What information did the studies add to our understanding of this practice or problem?
      C. Discussion – How might this information be used in the future to increase animal production or
      D. Give the references used – J. Anim. Sci. format.
              For example of citations of articles and electronic publications see:
              J. Anim. Sci., 81:344-345 (2003)

Suggested topic: (other growth related topics are acceptable)
Callipyge gene and composition                      Leptin and feed intake
Chronic heat stress and prenatal development        Relationship of animal behavior to animal production
Early weaning of pigs and growth                    Nutritional influences on endocrine function
Compensatory growth                                 Development of adipose tissue
Nutritional influences on carcass composition       Placental transfer of nutrients
Environment and growth                              Binding of insulin to adipocytes
Somatostatin and growth                             Effect of growth rate on fat deposition
Beta agonists and growth                            Use of a transgenic animal
Diet effects on muscle quality                      Effect of birth weight on postnatal growth
Influence of stress on growth                       Regulation of secretion of insulin-like factors
Influence of insulin on growth                      Feeding behavior and daily gain
Regulation of muscle cell growth                    Beta adrenergic receptors in muscles

4. Due date July 7, 2006.

       Plagiarism: The representation of previously written, published or creative work as one’s own.
       Wherever the wording, arguments, data, design, etc., belonging to someone else are used in a paper,
       report, oral presentation, or similar academic project, this fact must be made explicitly clear by citing the
       appropriate references or sources. The reference wording must fully indicate the extent to which any
       part or parts of the project are attributed to others. Paraphrased materials must be acknowledged in the
       same manner as material that is used verbatim.

       In scientific writing, direct quotations are not used. Therefore, sentences or phrases (word for word)
       from previously written papers cannot be used in your paper. Previous finding should be expressed in
       your own words and the source should be given as a reference.