effective population size Archives

Population structure and genetic trends for indigenous African beef cattle breeds in South Africa (Short communication)

2016
Issue: 2
Volume: 46

S. Abin, H.E. Theron & E. van Marle-Köster Page: 152 - 156

2025-04-18
vanryssen

The aim of this study was to investigate population structure and genetic trends based on pedigree and performance records of five indigenous African beef cattle breeds (Afrikaner, Boran, Drakensberger, Nguni and Tuli) in South Africa. Pedigree completeness over six generations…

Analysis of inbreeding of the South African Dairy Swiss breed (Short communication)

2013
Issue: 1
Volume: 43

P. de Ponte Bouwer, C. Visser & B.E. Mostert Page: 38 - 43

2025-04-18
vanryssen

In South Africa, the Dairy Swiss breed, which originated in Switzerland, consists of 27 breeders and 1135 breeding cows. Pedigree information on the breed was analysed to determine its effective population size (Ne) and rate of inbreeding. The rate of…

Pedigree analysis of an ostrich breeding flock

2012
Issue: 2
Volume: 42

M.D. Fair, J.B. van Wyk & S.W.P Cloete Page: 114 - 122

2025-04-18
flickerleap

Pedigree records, maintained from 1978 to 2005 at the Oudtshoorn Research Farm, South Africa, of 40 074 birds of a pair-breeding ostrich flock were used to estimate the effective number of founders (fe), the effective number of ancestors (fa), the…