Descubre y comparte nuestro conocimiento público

Se han encontrado 11 recursos

Resultados de búsqueda

This paper reviews experiences with cross-breeding for milk production in the tropics. Data were compiled from 23 different studies evaluating the performance of different grades of cross-bred animals as well as local breeds. Relative performance of indigenous breeds compared with different grade...


Galukande, E.Mulindwa, H.Wurzinger, MariaRoschinky, R.Okeyo Mwai, AllySölkner, J.[Cross-breeding cattle for milk production in the tropics: achievements, challenges and opportunities]Cross-breeding cattle for milk production in the tropics: achievements, challenges and opportunities

Background Understanding the relationship between genetic admixture and performances is crucial for the success of crossbreeding programs. Use of small sets of ancestry informative markers (AIMs) is a cost effective option to estimate the levels of admixture in situations where pedigree recording...


Getachew, T.Huson, H.J.Wurzinger, MariaBurgstaller, J.Gizaw, SolomonHaile, AynalemRischkowsky, Barbara A.Brem, G.Boison, S.A.Mészáros, G.Okeyo Mwai, AllySölkner, J.[Identifying highly informative genetic markers for quantification of ancestry proportions in crossbred sheep populations: Implications for choosing optimum levels of admixture]Identifying highly informative genetic markers for quantification of ancestry proportions in crossbred sheep populations: Implications for choosing optimum levels of admixture

The objective of this review paper is to examine whether or not sheep crossbreeding is a feasible option to improve indigenous sheep breeds in developing countries using Ethiopian case as example. The paper reviewed and discussed the history of exotic breed introduction, research, and development...


Getachew, T.Haile, AynalemWurzinger, MariaRischkowsky, Barbara A.Gizaw, SolomonAbebe, A.Sölkner, J.[Review of sheep crossbreeding based on exotic sires and among indigenous breeds in the tropics: An Ethiopian perspective]Review of sheep crossbreeding based on exotic sires and among indigenous breeds in the tropics: An Ethiopian perspective

There are distinct breeds suitable for diverse purposes in the different production environments or ecological zones. Farmers in different production systems have different trait preferences and the strategies followed by them are also as diverse as the agro-environments within which they operate...


Duguma, G.Mirkena, T.Haile, AynalemIñiguez, L.Okeyo Mwai, AllyTibbo, MarkosRischkowsky, Barbara A.Sölkner, J.Wurzinger, Maria[Participatory approaches to investigate breeding objectives of livestock keepers]Participatory approaches to investigate breeding objectives of livestock keepers

Breeding objectives always involve consideration of multiple traits, even in situations where output of a single trait is dominant. We review literature dealing with formal definition of breeding objectives. Involvement of farmers in the process of setting up breeding objectives is also considere...


Sölkner, J.Grausgruber, H.Okeyo Mwai, AllyRuckenbauer, P.Wurzinger, Maria[Breeding objectives and the relative importance of traits in plant and animal breeding: a comparative review]Breeding objectives and the relative importance of traits in plant and animal breeding: a comparative review

Ankole cattle are well known for their massive white horns and red coat colour. These characteristics are attributed to centuries of cultural breeding practices. Two experiments with traditional cattle keepers were carried out at a governmental Ankole nucleus farm in south-western Uganda to ident...


Ndumu, D.B.Baumung, R.Wurzinger, MariaDrucker, A.G.Okeyo Mwai, AllySemambo, D.K.Sölkner, J.[Performance and fitness traits versus phenotypic appearance in the African Ankole Longhorn cattle: a novel approach to identify selection criteria for indigenous breeds]Performance and fitness traits versus phenotypic appearance in the African Ankole Longhorn cattle: a novel approach to identify selection criteria for indigenous breeds

Survival analysis applying proportional hazards models was used to investigate genetic and non-genetic factors affecting ewe longevity and lamb survival of sheep in Ethiopia. Data were obtained from an on-station closed nucleus breeding program of Menz sheep and an on-farm Awassi×Menz sheep cross...


Getachew, T.Gizaw, SolomonWurzinger, MariaHaile, AynalemRischkowsky, Barbara A.Okeyo Mwai, AllySölkner, J.Meszaros, G.[Survival analysis of genetic and non-genetic factors influencing ewe longevity and lamb survival of Ethiopian sheep breeds]Survival analysis of genetic and non-genetic factors influencing ewe longevity and lamb survival of Ethiopian sheep breeds

Breeding programmes described as community-based (CBBP) typically relate to low-input systems with farmers having a common interest to improve and share their genetic resources. CBBPs are more frequent with keepers of small ruminants, in particular smallholders of local breeds, than with cattle, ...


Mueller, J.P.Rischkowsky, Barbara A.Haile, AynalemPhilipsson, J.Okeyo Mwai, AllyBesbes, B.Valle-Zárate, A.Tibbo, MarkosMirkena, T.Duguma, G.Sölkner, J.Wurzinger, Maria[Community based livestock breeding programmes: Essentials and examples]Community based livestock breeding programmes: Essentials and examples

Based on the results of participatory approaches to define traits in the breeding objectives, four scenarios of ram selection and ram use were compared via deterministic modelling of breeding plans for community-based sheep breeding programmes in four diverse agro-ecological regions of Ethiopia. ...


Mirkena, T.Duguma, G.Willam, A.Wurzinger, MariaHaile, AynalemRischkowsky, Barbara A.Okeyo Mwai, AllyTibbo, MarkosSölkner, J.[Community-based alternative breeding plans for indigenous sheep breeds in four agro-ecological zones of Ethiopia]Community-based alternative breeding plans for indigenous sheep breeds in four agro-ecological zones of Ethiopia

Abegaz, S.Sölkner, J.Gizaw, SolomonDessie, TadelleHaile, AynalemWurzinger, Maria[Description of production systems and morphological characteristics of Abergelle and Western lowland goat breeds in Ethiopia: Implication for community-based breeding programmes]Description of production systems and morphological characteristics of Abergelle and Western lowland goat breeds in Ethiopia: Implication for community-based breeding programmes

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso