Document Detail


A simulation exercise to teach principles of bovine reproductive management.
MedLine Citation:
PMID:  15144098     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Students in Reproductive Management (a senior-level course with approximately 20 to 50 students per semester) at the University of Missouri-Columbia are required to participate in a simulation exercise that is designed to improve reproductive efficiency in a beef herd. During a simulated 5-yr period, students must 1) improve reproductive efficiency in a beef cow-herd through implementation of reproductive management principles; 2) determine the economic impact of reproductive management decisions in a beef herd; and 3) evaluate the constraints of different geographical locations on approaches to reproductive management. Groups of three to four students are provided with the reproductive and economic records of a farm/ranch located in different parts of North America. Students create reproductive management plans consisting of 1) detailed discussion of farm/ranch environment (climate, terrain, forage and grain availability, and stocking rate; season for breeding and calving; and justification for choice of breed); 2) assessment of current level of reproductive performance; 3) identification and economic justification of specific (measurable) objectives; 4) discussion of alternatives for accomplishing specific objectives; 5) prediction of reproductive performance (pregnancy rate, quantity of calf weaned per cow exposed, and cost per quantity of calf weaned) in response to implementation of specific management practices; and 6) an annual and 5-yr reproductive and economic summary. Students obtain livestock marketing information for their assigned location via the Internet. Spreadsheets were developed to calculate the reproductive efficiency of postpartum cows and replacement heifers based on management decisions made by the groups and to calculate a yearly economic summary for each of the 5 yr. Management decisions are justified in a written report, and oral presentations are given to the class when the project is completed. Greater than 85% of students indicated that the exercise increased their understanding of how management decisions affect reproductive efficiency and profitability in a beef operation and also provided added confidence for students that applied for beef management positions.
Authors:
G A Perry; M F Smith
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of animal science     Volume:  82     ISSN:  0021-8812     ISO Abbreviation:  J. Anim. Sci.     Publication Date:  2004 May 
Date Detail:
Created Date:  2004-05-17     Completed Date:  2005-02-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8003002     Medline TA:  J Anim Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1543-9     Citation Subset:  IM    
Affiliation:
Department of Animal Science, University of Missouri, Columbia 65211, USA.
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MeSH Terms
Descriptor/Qualifier:
Animal Feed / economics
Animal Husbandry / economics,  education*,  methods
Animals
Breeding
Cattle / growth & development,  physiology*
Computer Simulation*
Curriculum*
Female
Male
Models, Biological
Models, Econometric*
Predictive Value of Tests
Pregnancy
Reproduction / physiology*
Seasons
United States

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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