Please use this identifier to cite or link to this item:
https://hdl.handle.net/1959.11/19794
Title: | A novel use of high density SNP assays to optimize choice of different crossbred dairy cattle genotypes in small-holder systems in East Africa | Contributor(s): | Ojango, J M K (author); Marete, A (author); Mujibi, D (author); Rao, J (author); Poole, J (author); Rege, J E O (author); Gondro, C (author)![]() ![]() |
Publication Date: | 2014 | Handle Link: | https://hdl.handle.net/1959.11/19794 | Abstract: | We present use of SNP technologies to obtain for the first time, rapid, large-scale, in situestimates of performance of crossbred cows in smallholder herds. Compared to historical approaches, our approach allowed optimum crossbreed choices to be determined more rapidly and without question about the relevance of the environment. High-density SNP assays were used to estimate breed composition for a monitored population comprising 1292 cows from 610 smallholder farms in Kenya. The achieved milk yields are much lower than generally assumed and lactation curves are very flat out to 400 days. In poor production environments, lower grade crosses (containing <60% exotic dairy alleles) had the same yield as high grade crosses. Allowing for the larger size and maintenance requirements of high grade exotics, lower grade exotics will be the most economically productive animals in these environments. | Publication Type: | Conference Publication | Conference Details: | WCGALP 2014: 10th World Congress on Genetics Applied to Livestock Production, Vancouver, Canada, 17th - 22nd August, 2014 | Source of Publication: | Proceedings of the 10th World Congress on Genetics Applied to Livestock Production (WCGALP) (Genetic Improvement Programs: Selection using molecular information (Posters)), p. 1-3 | Publisher: | American Society of Animal Science | Place of Publication: | Champaign, United States of America | Fields of Research (FoR) 2008: | 070201 Animal Breeding | Fields of Research (FoR) 2020: | 300305 Animal reproduction and breeding | Socio-Economic Objective (SEO) 2008: | 830302 Dairy Cattle | Socio-Economic Objective (SEO) 2020: | 100402 Dairy cattle | Peer Reviewed: | Yes | HERDC Category Description: | E1 Refereed Scholarly Conference Publication | Publisher/associated links: | https://asas.org/docs/default-source/wcgalp-posters/486_paper_9248_manuscript_560_0.pdf |
---|---|
Appears in Collections: | Conference Publication |
Files in This Item:
File | Description | Size | Format |
---|
Page view(s)
1,528
checked on May 19, 2024
Download(s)
2
checked on May 19, 2024
Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.