Flock composition, effective population size and inbreeding rate of kokok balenggek chicken breed under in-situ conservation

Abstract

The present study was aimed to calculate flock composition, effective population size and inbreeding rate of Kokok balenggek chicken (KBC) under in-situ conservation area in tigo lurah district, Solok Regency, West Sumatera Province, Indonesia. A semi-structured questionnaire was administered to 55 selected households engaged in KBC farming in the study area. The results showed that total number of KBC at in-situ conservation area was 938 heads. Chicken flock composition of KBC was chick (50.31%), chicken grower (26.03%) and adult chicken (23.66%). A low male: female ratio (Nm/Nf) of 1:1.7 was observed in the KBC breed. Number of effective population size (Ne) was 206 heads. The rate of inbreeding ()F) calculated for the indigenous KBC flock considering the existing flock size and management practice was 0.0024 (0.24%) indicating that the KBC breed was not at the risk of extinction. It is concluded that inbreeding rate in KBC population in tigo lurah district at in-situ conservation area is not found.