Working Document Series Open Access Hatchery system evaluation and adaptation for the production of Oreochromis karongae (Trewavas, 1941) fingerlings D. Kassam · J.S. Likongwe · George Matiya · J.S. Valeta In Malawi development of aquaculture is constrained by, among other factors, lack of good quality seed. Through Research into Use (RiU) the Government of Malawi has mandated a few fish hatcheries, of which the most prominent is the Commerc… RUF-35091 2010 CC BY 4.0 16 Sep 2015
Working Document Series Open Access Fisheries and aquaculture adaptation and conservation strategies in Uganda’s changing climate K. Angura · C. Masembe · V. Muwanika Climate change has modified the distribution and productivity of many organisms including freshwater species. It has also affected biological processes with eventual alterations in the food webs. Fishers and fish farmers will bear the full… RUF-35055 CC BY 4.0 15 Sep 2015
Working Document Series Open Access Characterisation of wild and cultured Oreochromis shiranus in Malawi I. Changadeya & Kosgey · D. Kassam · C.S. Lewuantai · A. Maluwa Oreochromis shiranus is a Malawi indigenous tilapia fish species. The aim of the study is to characterise the species phenotypically and genotypically within and between wild strains, unimproved and improved cultured strains. Phenotypic ch… RUF-35039 2010 CC BY 4.0 15 Sep 2015
Working Document Series Open Access Reproductive biology and cryopreservation of milt of Alestes baremoze (Joannis, 1835) of Lake Albert, Uganda M. Agaba · J.S. Balirwa · G.M. Kamugisa · D. Kassam +1 more This study is designed to generate knowledge relevant to the domestication, breeding, production and propagation of Alestes baremoze fish species in captivity through artificial spawning and in vitro fertilization. The study aims at broade… RUF-35007 2010 CC BY 4.0 15 Sep 2015
Working Document Series Open Access Milking procedures and prevalence of mastitis and mastitis specific-pathogens in selected smallholder dairy herds in Zimbabwe G. Matope · M. Ndengu · D.M. Pfukenyi · Katsande. Simbarashe A cross-sectional study was carried to collect milk samples for bacteriological examination and somatic cell counting in diary cows in Zimbabwe. Of the total animals tested, 172 (29.5%) had mastitis with 84% (144/172) of them having subcli… RUF-34960 2010 CC BY 4.0 14 Sep 2015
Working Document Series Open Access Prominence of goat milk consumption and determinants of attitudes towards the milk in five agro-ecological zones of Zimbabwe P.T. Banda · S. Mpofu · D.M. Pfukenyi This study determined the prominence and determinants of attitudes towards goat milk consumption in agro-ecological zones I to V of Zimbabwe. Data were collected from 545 households and analyzed using SPSS. Generally, milk was consumed at … RUF-34928 2010 CC BY 4.0 14 Sep 2015
Working Document Series Open Access Genetic and phenotypic evaluation of Zimbabwean Jersey cattle towards the development of a selection index T.E. Halimani · E.V Imbayawro-Chikosi · E.M. Missanjo A multitrait selection index for Zimbabwean Jersey cattle was constructed using 10 986 records (305-day) from 25 herds with calving period from 1996 to 2008 using data from the Livestock Identification Trust. Genetic and phenotypic paramet… RUF-34915 2010 CC BY 4.0 14 Sep 2015
Working Document Series Open Access Characterization of semen from the unimproved South African indigenous goats J.P. Greyling · B. Matshaba · M. Mphaphathi · T.L. Nedambale +4 more In this study, we characterised semen of the unimproved South African (SA) indigenous goat with an aim of determining the potential of using modern techniques such as artificial insemination to multiply it. The SA unimproved goat is hardy … RUF-34889 2010 CC BY 4.0 14 Sep 2015
Working Document Series Open Access Breed preference, selection criteria and production performance of dairy cattle in the selected smallholder dairy farms in Zimbabwe B.T. Hanyani-Mlambo · E.V Imbayawro-Chikosi · L. Marius · C. Mutisi This study identified breed preferences, production performance and selection criteria used in selecting dairy breeds in Zimbabwe. A questionnaire based survey was conducted on 109 smallholder dairy farmers in Zimbabwe and data were analyz… RUF-34869 CC BY 4.0 14 Sep 2015
Working Document Series Open Access Genetic and non-genetic factors influencing production in two boer goats studs M.D. Fair · F.J.M. King · F.W.C Neser The effect of genetic and environmental factors on weaning and post-weaning traits of boer goats was studied using 3233 records collected from 1998 to 2008. Least square analysis was used for estimation of environmental effects. Genetic pa… RUF-34846 2010 CC BY 4.0 14 Sep 2015
Working Document Series Open Access Developing a broad soybean germplasm base and durable resistance to soybean rust disease in Uganda R. Kawuki · P. Tukamuhabwa · G. Tusiime Soybean rust, Phakopsora pachyrhizi is a major threat to soybean production world-wide. In Uganda breeding for soybean rust resistance has taken priority over other objectives since the first disease rust outbreak in 1996. Three resistant … RUF-34535 2010 CC BY 4.0 25 Aug 2015
Working Document Series Open Access Introgressing resistance to Turcicum leaf blight and mapping of associated quantitative trait loci in sorghum M. Abdelbagi Ali · Mayada Mamoun Beshir · P. Gibson · P. Okori Screening for Turcicum leaf blight was carried out in F2 and F2:3 segregating sorghum populations under field and controlled conditions. Disease severity as a percentage of leaf area covered by lesions was computed and the lesion type was … RUF-34473 2010 CC BY 4.0 21 Aug 2015
Working Document Series Open Access Genetic effects of inbreeding on harvest index and root dry matter content in cassava M. Ferguson · L. Herselman · R.S. Kawuki · M.T. Labuschagne +1 more Inbreeding of predominantly cross-pollinating crops is expected to result in progeny with reduced fitness and or improved phenotypes. The effects of inbreeding in cassava are not well quantified. Accordingly, in this exploratory study, S1 … RUF-34468 2010 CC BY 4.0 21 Aug 2015
Working Document Series Open Access Genetic Analysis of Tropical Maize Inbreds and Hybrids for Grain Yield and Traits Associated with Drought Tolerance P. Gibson · C. Magorokosho · X. Mhike · P. Okori Drought tolerance is a complex trait, hence genetic improvement of this trait in maize requires indirect selection methods based on highly heritable traits that correlate strongly with grain yield. This study aimed at determining the modes… RUF-32504 2012 CC BY 4.0 17 May 2014
Working Document Series Open Access A Comparative Analysis of Breeding Information Sourcing and Net Margin Estimates of Inseminations and Replacement Decisions of Smallholder Dairy Farmers P.M. Mshenga · N.J. Muthui · B. Omedo Bebe Milk deficit (MD) in western Kenya (MD) has created high demand for dairy breeding stock. This is mainly sourced from the neighbouring milk surplus Rift Valley (RV) region. Because of limited access to artificial insemination (AI) services… RUF-32239 2012 CC BY 4.0 14 May 2014
Working Document Series Open Access Temperature-dependent Egg development rates and Hatching period of Chambo, Oreochromis Karongae (Pisces: Cichlidae) D. Kassam · J.S. Likongwe · J.S. Valeta A study was conducted to assess the effect of temperature on egg development in an attempt to improve hatching success and fry production in Oreochromis karongae. Temperaturedependent development rates and hatching period for fertilized eg… RUF-32216 2012 CC BY 4.0 14 May 2014
