+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Congruence between selection on breeding values and farmers' selection criteria in sheep breeding under conventional nucleus breeding schemes



Congruence between selection on breeding values and farmers' selection criteria in sheep breeding under conventional nucleus breeding schemes



Animal 5(7): 995-1001



Designing breeding schemes suitable for smallholder livestock production systems in developing regions has hitherto been a challenge. The suggested schemes either do not address farmers' breeding goals (centralized station-based nucleus schemes) or yield slow genetic progress (village-based schemes). A new breeding scheme that integrates the merits of previously suggested schemes has been designed for Menz sheep improvement in Ethiopia. It involves selection based on breeding values in nucleus flocks to produce elite rams, a one-time only provision of improved rams to villagers and a follow-up village-based selection to sustain genetic progress in village flocks. Here, we assessed whether conventional selection of breeding rams based on breeding values for production traits, which is the practice in station-based nucleus flocks, meets farmers' breeding objectives. We also elicited determinants of farmers' ram choice. Low but significant correlations were found between rankings of rams based on farmers' selection criteria, estimated breeding values (EBV) and body weight (BW). Appearance traits (such as color and horn) and meat production traits (BW and linear size traits) significantly determined farmers' breeding ram choice. The results imply that conventional selection criteria based solely on EBV for production traits do not address farmers' trait preferences fully, but only partially. Thus, a two-stage selection procedure involving selection on breeding values in nucleus centers followed by farmers' selection among top- ranking candidate rams is recommended. This approach accommodates farmers' preferences and speeds up genetic progress in village-based selection. The Menz sheep scheme could be applied elsewhere with similar situations to transform conventional station-based nucleus breeding activities into participatory breeding programs.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 052300098

Download citation: RISBibTeXText

PMID: 22440095

DOI: 10.1017/s1751731111000024


Related references

Stochastic simulation of dairy cattle nucleus breeding schemes: Influence of breeding strategy and biased breeding values in the population. Journal of Animal Breeding and Genetics 110(1-6): 268-280, 1993

Optimum contribution selection using traditional best linear unbiased prediction and genomic breeding values in aquaculture breeding schemes. Journal of Animal Science 89(3): 630-638, 2011

Sheep breeding objectives and selection criteria of Wairarapa and Tararua sheep farmers. Proceedings of the New Zealand Society of Animal Production 57: 33-36, 1997

Developmental of biochemical and immunogenetic tests as supplementary criteria for the selection and breeding of sheep and the possibility of using them in breeding work. Trudy Vsesoiuznyi nauchno issledovatel'skii institut ovtsevodstva i kozovodstva9(2): 205-209, 1977

Studies on breeding and selection schemes in pigs part 6 correlation between breeding values estimated from station test and on farm test data. Acta Agriculturae Scandinavica 27(2): 138-144, 1977

Increased genetic gains in sheep, beef and dairy breeding programs from using female reproductive technologies combined with optimal contribution selection and genomic breeding values. Genetics Selection Evolution 47: 70, 2015

Marker-based selection as a tool for enhancing the efficiency of two conventional breeding methods of self-fertilizing crop plants, the generation-accelerated bulk breeding and doubled haploid breeding. Breeding Science 55(4): 397-407, 2005

Congruence between theory and practice: reduced contamination rate following phenotypic pre-selection within the Breeding without Breeding framework. Scandinavian Journal of Forest Research 29(6): 552-554, 2014

Broiler breeding: breeding goals, selection schemes and the usefulness of local breeds for China. Broiler breeding: breeding goals, selection schemes and the usefulness of local breeds for China: 185 pp., 1999

Marker assisted selection of heifers improved milk somatic cell count compared to selection on conventional pedigree breeding values. 2008

Evaluation of breeding objectives for purebred and crossbred selection schemes for adoption in indigenous chicken breeding programmes. British Poultry Science 54(1): 62-75, 2013

Correlation of predicted breeding values across environments in the presence of selection for direct and maternal breeding values. 1992

Modern developments and selection schemes in sheep breeding. Paper, 30th Annual Meeting, European Association for Animal Production (GS3.2): 4, 1979

Truncation selection for BLUP-EBV and phenotypic values in fish breeding schemes. Aquaculture 3 243(1-4): 61-68, 2005

Additive direct and maternal breeding values of imported sires in the nucleus flock of a cooperative sheep breeding group. British Society of Animal Science [Author] Proceedings of the British Society of Animal Science : 62, 2000