Effective population size and inbreeding rate of indigenous Nguni cattle under in situ conservation in the low-input communal production system

Tada, O and Muchenje, V and Dzama, K (2013) Effective population size and inbreeding rate of indigenous Nguni cattle under in situ conservation in the low-input communal production system. pp. 137-142.

[img]
Preview
PDF
Effective population size and inbreeding rate Tada SAJAS 2013.pdf - Published Version

Download (103kB) | Preview
Official URL: http://www.sasas.co.za/sites/sasas.co.za/files/Tad...

Abstract

Nineteen rural Nguni cattle enterprises managed at communal and small-scale levels were used in a study to determine population genetic parameters, level of Nguni genetic contribution and risk status of community-based animal genetic resources. Chi-square tests were performed to ascertain the association between enterprise ownership and the level of Nguni genetic contribution. Analysis of (co)variance was used to determine significant factors affecting breeding ratio, effective population size (Ne) and inbreeding rate per generation (∆F). About 75% of the animals in the pooled communities were pure Nguni and the breed was classified as not at risk of extinction while the individual enterprises are classified as being endangered-maintained. There were no significant differences between communal (0.270±0.0699) and small-scale (0.213±0.0748)enterprises in the ratio of breeding males to breeding females.Pooled Newas 348.14,whereas Ne was 19.5±4.60 for communal and14.1±5.03 forsmall-scale enterprises.It was concluded that enterprise ownership had no effect on small population genetic parameters in community-based in-situ conservation programs. It is recommended to adopt policies to integrate enterprises, increase herd sizes and Neso as to preserve within breed genetic diversity. Keywords:breeding ratio, enterprise duration, herd size, in-situ conservation

Item Type: Article
Subjects: S Agriculture > S Agriculture (General)
S Agriculture > SF Animal culture
Depositing User: Dr O Tada
Date Deposited: 04 Jun 2015 07:08
Last Modified: 04 Jun 2015 07:08
URI: http://researchdatabase.ac.zw/id/eprint/309

Actions (login required)

View Item View Item