Abstract

Data on fleece (FW), sort (SW) and skirting (KW) wool weights together with percentages of sort (PSW) and skirting (PKW) wool taken from 254 ewes at their second shearing were used for estimating heritability, and genetic and phenotypic carrelations. Variance components were estimated by Restricted Maximum Likelihood method (REML) through a mixed model techinque. Effects due to age of dam year and season of birth were not significant. Heritabilities of the traits were 0.32, 0.28, 0.22, 0.30 and 0.22 respectively. Genetic correlations of (KW) with (SW), (FW), (PKW), (PSW); of (SW) with (FW), (PKW), (PSW); of (FW) with (PKW), (PSW) and the correlation of (PKW) with (PSW) were - 0.14,- 0.81, 0.52, - 0.34; 0.90, - 0.78, 0.57; - 0.12, 0.17; and-0.99 respectively. The phenotypic correlations correspondingly were 0.05, 0.33, 0.99, - 0.72; 0.89, - 0.20, 0.16; 0.26, -0.28 and - 0.99 respectively.
 

D. A Aziz

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume XV. Beef cattle, sheep and pig genetics and breeding, fibre, fur and meat quality., , 209–211, 1990
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