Genetic diversity of the indigenous cattle of Kenya, Uganda, Ethiopia and Tanzania using high-density SNP data. The indigenous cattle make a significant contribution to the livelihood of many communities in Ethiopia, Tanzania and other countries in eastern Africa. Here, we identify the genetic st...
Weerasinghe, Shalanee
,
Gibson, John P.
,
Gondro, Cedric
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Okeyo Mwai, Ally
,
Ojango, Julie M.K.
,
Rao, E.J.O.
,
Dessie, Tadelle
,
Mujibi, Denis
,
Rege, J.E.O.
,
[Genetic diversity of the indigenous cattle of Kenya, Uganda, Ethiopia and Tanzania using high-density SNP data]
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Genetic diversity of the indigenous cattle of Kenya, Uganda, Ethiopia and Tanzania using high-density SNP data
Cost-effective genotyping of livestock species can be done through a process which involves genotyping part of the population using a high density (HD) panel and the remainder with a lower density panel and then use imputation to infer the missing genotypes that are not included on the low densit...
Aliloo, Hassan
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Mrode, Raphael A.
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Okeyo Mwai, Ally
,
Ojango, Julie M.K.
,
Dessie, Tadelle
,
Rege, J.E.O.
,
Goddard, M.
,
Gibson, John P.
,
[Optimal design of low density marker panels for genotype imputation]
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Optimal design of low density marker panels for genotype imputation
The Red Maasai sheep breed is under threat due to indiscriminate crossbreeding and strategies are needed to conserve and improve the breed. The aim of this study was to understand farmers’ preferences for important traits of flocks of Red Maasai, Dorper and crosses in two different areas, Ambosel...
Zonabend König, Emelie
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Mirkena, T.
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Audho, James O.
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Ojango, Julie M.K.
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Strandberg, E.
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Näsholm, A.
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Malmfors, B.
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Okeyo Mwai, Ally
,
Philipsson, J.
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[Breeding objectives for Red Maasai and Dorper sheep in Kenya—A participatory approach]
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Breeding objectives for Red Maasai and Dorper sheep in Kenya—A participatory approach
In 2008 a breeding program to increase production level in indigenous chickens was initiated at the Debre Zeit Agricultural Research Center in Ethiopia and is currently producing its 8th generation. Aim of this paper was to evaluate the success of the breeding program. Selection was on own perfor...
Wondmeneh, E.
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Waaij, E.H. van der
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Dessie, Tadelle
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Okeyo Mwai, Ally
,
Arendonk, Johan A.M. van
,
[A running breeding program for indigenous chickens in Ethiopia: Evaluation of success]
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A running breeding program for indigenous chickens in Ethiopia: Evaluation of success
Food production systems in Africa depend heavily on the use of locally adapted animals. Goats are critical to small-holder farmers being easier to acquire, maintain, and act as scavengers in sparse pasture. Indigenous goats have undergone generations of adaptation and genetic isolation that have ...
Huson, H.J.
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Sonstegard, T.S.
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Silverstein, J.
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Woodward-Greene, M.J.
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Masiga, C.
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Muchadeyi, F.C.
,
Rees, J.
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Sayre, B.
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Elbetagy, A.
,
Rothschild, Max F.
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Mujibi, F.D.N.
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Okeyo Mwai, Ally
,
Kemp, Stephen J.
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Colli, L.
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Ajmone-Marsan, P.
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Crepaldi, P.
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Abegaz, S.
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Sölkner, J.
,
Tassell, C.P. van
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African Goat Improvement Network
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[Genetic and phenotypic characterization of African goat populations to prioritize conservation and production efforts for small-holder farmers in sub-Saharan Africa]
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Genetic and phenotypic characterization of African goat populations to prioritize conservation and production efforts for small-holder farmers in sub-Saharan Africa
Reproductive performance and disease data were recorded for 2 years on 1,824 dairy cows in smallholder farms using participatory approaches and onfarm recording. Most animals experienced one service to conception. Calving intervals were long, ranging between 261 and 761 days, with an average of 4...
Mujibi, F.D.N.
,
Ojango, Julie M.K.
,
Rao, E.J.O.
,
Karanja, T.
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Kihara, Absolomon
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Marete, A.
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Baltenweck, Isabelle
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Poole, Elizabeth J.
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Rege, J.E.O.
,
Gondro, C.
,
Weerasinghe, W.M.S.P.
,
Gibson, John P.
,
Okeyo Mwai, Ally
,
[Use of high density SNP genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms: Assessment of reproductive and health performance]
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Use of high density SNP genotypes to determine the breed composition of cross bred dairy cattle in smallholder farms: Assessment of reproductive and health performance
The aim of this study was to measure losses in milk production due to the impact of heat stress, using temperature-humidity index (THI) on test-day milk records of small holder dairy cattle farms in Tanzania. Climate data obtained from aWhere, an agricultural weather data platform (http://www.awh...
Ekine-Dzivenu, C.C
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Mrode, Raphael A.
,
Ojango, Julie M.K.
,
Okeyo Mwai, Ally
,
[Evaluating the impact of heat stress as measured by temperature- humidity index (THI) on test-day milk yield of dairy cattle in Tanzania]
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Evaluating the impact of heat stress as measured by temperature- humidity index (THI) on test-day milk yield of dairy cattle in Tanzania
The impact of utilizing the genomic relationship matrix (G) computed based on breedwise allele frequencies or different scaling factors on the accuracy of genomic prediction in cross-bred dairy cattle in smallholder systems was investigated. Data consisted of genotypes from the Illumina HD chip a...
Mrode, Raphael A.
,
Ojango, Julie M.K.
,
Gibson, John P.
,
Okeyo Mwai, Ally
,
[Improving the accuracy of genomic predictions in small holder crossed- bred dairy cattle]
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Improving the accuracy of genomic predictions in small holder crossed- bred dairy cattle
Traditional ‘random’ sampling strategy for molecular characterization has revealed low genetic differentiation and weak genetic structure among Asian and African indigenous, non-descript chicken populations although
they carried high within-population phenotypic and molecular genetic diversity. I...
Samaraweera, A.M.
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Silva, P.
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Abeykone, N.D.F.
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Ibrahim, Mohamed N.M.
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Okeyo Mwai, Ally
,
Han Jianlin
,
[Population genetic structure of Sri Lankan backyard chicken flocks: Implication for conservation and genetic improvement programs]
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Population genetic structure of Sri Lankan backyard chicken flocks: Implication for conservation and genetic improvement programs
The study reports the effect of incorporating risk in the derivation of economic values for traits of the breeding goal of Small East African goats under the pastoral production system. A model previously used to derive conventional economic values was revised ...
Mbuku, S.M.
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Kosgey, I.S.
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Okeyo Mwai, Ally
,
Kahi, A.K.
,
[Risk-rated economic values for production and functional traits of Small East African goat using profit functions]
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Risk-rated economic values for production and functional traits of Small East African goat using profit functions