Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Multistage selection for maximum economic return with an application to beef cattle breeding

S Xu1, T G Martin, W M Muir

  • 1Department of Genetics, North Carolina State University, Raleigh 27695, USA.

Journal of Animal Science
|March 1, 1995
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

[Determination of trace amounts of copper by flow injection vapor generation AAS].

Guang pu xue yu guang pu fen xi = Guang pu·2003
Same author

[Advances in the study of hypoglycemic effective monomer elements in natural pharmaceutical materials and their pharmacological action].

Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials·2003
Same author

[Effects of oxidized LDL, hypoxia, and 5-hydroxytryptamine on 5-HT2A receptor and intracellular free Ca2+ in cultured vascular smooth muscle cells].

Zhongguo yi xue ke xue yuan xue bao. Acta Academiae Medicinae Sinicae·2003
Same author

Calorie restriction can increase thymocyte apoptosis through Bcl-2 and Fas pathway.

Chinese medical sciences journal = Chung-kuo i hsueh k'o hsueh tsa chih·2003
Same author

Long-term dietary restriction can decrease the alveolar macrophages to produce reactive oxygen intermediates and reactive nitrogen intermediates.

Chinese medical sciences journal = Chung-kuo i hsueh k'o hsueh tsa chih·2003
Same author

Role of calcineurin in angiotensin II-induced cardiac myocyte hypertrophy of rats.

Chinese medical sciences journal = Chung-kuo i hsueh k'o hsueh tsa chih·2003

A new program optimizes livestock selection by determining optimal truncation points for multistage selection, aiming to maximize profit or economic gain. This methodology enhances economically sound performance testing and selection programs for improved breeding outcomes.

Area of Science:

  • Animal breeding and genetics
  • Quantitative genetics
  • Livestock production

Background:

  • Optimizing selection strategies is crucial for maximizing genetic gain and economic returns in livestock breeding programs.
  • Traditional single-stage selection may not be the most efficient method for complex breeding objectives.
  • Multistage selection offers potential advantages but requires careful optimization of selection criteria and timing.

Purpose of the Study:

  • To develop and evaluate a methodology for updating selection indices to facilitate multistage selection in livestock.
  • To determine optimal truncation points at each selection stage to maximize either profit or the ratio of aggregate economic gain to cost.
  • To compare the economic efficiency of different multistage selection scenarios against single-stage selection.

Related Experiment Videos

Main Methods:

  • A piecewise algorithm was developed to determine optimal truncation points for multistage selection, ensuring convergence and avoiding multiple integrations.
  • The methodology was applied to simulated beef bull selection scenarios, comparing single-stage and various multistage selection strategies (e.g., 1-year, 2-stage, 3-stage).
  • Selection indices were evaluated based on different numbers of traits (three, four, and five traits, including birth weight, growth rates, fat depth, and feed conversion ratio) and varying economic parameters.

Main Results:

  • Multistage selection, in general, resulted in reduced aggregate economic gain compared to single-stage selection.
  • Including feed conversion ratio in the selection index led to decreased profit and aggregate economic gain, except when progeny numbers were very large.
  • Three-trait selection consistently yielded higher profits across all tested scenarios compared to four- or five-trait selection.

Conclusions:

  • The developed methodology provides a tool for optimizing multistage selection programs, balancing economic gain with testing costs.
  • Careful consideration of the number of traits and the inclusion of traits like feed conversion is essential for maximizing profitability in selection programs.
  • The findings support the development of economically sound performance testing and selection programs tailored to specific breeding objectives and herd structures.