- Simulating a small population for selection
|Last update: August 18, 2011 10:50:58 AM|
SIMULATIING A SMALL POPULATION FOR SELECTION
GJ Delport & JJ Olivier1
ADSRI, Middelburg CP.
A technique to simulate breeding values and environmental variation in a small population by applying BLUP-technology is described.
Breeding values for the base population were obtained by simulating the effect of 11 gene pairs. This approach was followed since computer space (IBM-PC) limited animal model analysis to 70 animals.
Environmental variation is randomly generated within experimentally determined limits. Apart from fixed environmental effects a random normal deviate (V6e) where 62 e = 1-h2 was included to facilitate simulation of environmental and genetic trends.
Preliminary results for the simulation of clean fleece mass produced breeding values between -0.9 and +0.7 kg with a genetic standard deviation of 0.94 kg.
The model will be used to analyze the effects of applying different selection intensities, selection methods, generation interval and heritabilities in a small population.
1Grootfontein College of Agriculture, Middelburg , CP
Proceedings 29th SASAP congress L4.9.