Comparison of genetic gain from single-stage and two-stage selection in an open nucleus breeding scheme
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2015, Vol 9, Issue 1
Abstract
In order to compare genetic gain resulted from one-stage and two-stage selection in a nucleus breeding program, information of age structure of ewes and rams, reproductively and mortality of the native sheep population in Guilan province, Iran collected in 2013 deterministic simulation model was used. The simulation of breeding systems was performed by Matlab software. Weaning weight was formed the objective function in this study. When the nucleus was closed, genetic growth was 0.2278 kg per year which was lower than that of the open nucleus. In the open nucleus program and one-stage selection, the genetic gain was 0.2527 kg and in two-stage selection that was 0.2536 kg per year, indicating the advantage of two-stage selection over one-stage selection. Investigating the optimal structure of program in one and two-stage selection indicated that supplying 25 percent of the nucleus females by base herd and 50 percent of base males by nucleus herd created the highest annual genetic gain in the objective function, indicating the independence of optimal structure from the kind of selection.
Authors and Affiliations
Fateme Emamdoost| Department of Animal Science, Faculty of Agriculture, Islamic Azad University of Rasht, Iran. email: fe13680813@yahoo.com, Abdul Ahad Shadparvar| Department of Animal Science, Faculty of Agriculture, University of Guilan,iran.
Keywords
Related Articles
- EP ID EP6903
- DOI -
- Views 314
- Downloads 11
XBRL; A New Language for Financial Reporting
eXtensible Business Reporting Language) is a language for the electronic communication of business and financial data which is revolutionising business reporting around the world. It provides major benefits in the prepar...
Effect of E-CRM System on Attracting Bank Deposits
This study tries to review actual customers of banks and identify the effect of e-CRM system on attracting bank deposits with a scientific method. This applied research was performed with the descriptive survey method. T...
An Investigation of Factors Affecting the Teachers’ Job Performance in Agricultural High School, Mazandaran Province, Iran
This research ends to investigate factors affecting the teachers’ job performance in Agricultural High School in Mazandaran province, Iran. This is a descriptive-correlative research. The statistical population includes...
The Effectiveness of Problem Solving Training on the Reduceof Interpersonal Conflicts in the Children with Learning Disability
The purpose of this study was to determine the effectiveness of problem solving training on Improvement interpersonal, social behavior and Self-efficacy in Learning Disabilities students. The subjects consisted of 30 boy...
Investigation Of The Influence Of Psycho-Therapy With Matrix Model On Abuse Greed And Life- Expectancy In Amphetamine Addicts
The present research aims to determine the influence of psycho-therapy with matrix model on abuse greed and life-expectancy in Amphetamine addicts. Research methodology was semi-empirical and sectional with pretest and p...