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Now showing items 201-220 of 680
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Effectiveness of field practical training for competence acquisition among students of Botswana College of Agriculture
(Academic Journals, 2011-02-18)Field practical training is a requirement for all students who enrol in any program in the Botswana College of Agriculture, as it has been discovered that, experiential learning complements theoretical classroom teaching. ... -
The tropical African mercury anomaly: Lower than expected mercury concentrations in fish and human hair.
(Elsevier, 2011-02-20)Mercury is a neurotoxin and global pollutant, and wetlands and newly flooded areas are known to be sites of enhanced production of monomethylmercury, the form of mercury that is readily biomagnified in aquatic food chains ... -
Assessment of heavy metal pollution in soils along major roadside areas in Botswana
(Academic Journals, 2011-03)Assessment of heavy metal pollutants: Al, Co, Cu, Fe, Pb, Mn, Ni and Zn was conducted along major roadside soils of Botswana, lying between latitudes 18°S to 27°S and longitudes 20°E to 29°E using enrichment factor ratios ... -
Enhancing the quality of performance assessment in Agriculture in Botswana schools
(University of Pretoria, 2011-03-31)The quality of education in Botswana is not yet up to standard as there has been emphasis on attainment of Universal Basic Education. Quality in education encompasses a number of factors such as the development of the ... -
Changes in herbaceous species composition in the absence of disturbance in a cenchrus biflorus roxb. Invaded area in Central Kalahari Game Reserve, Botswana
(Hindawi Publishing Corporation, 2011-04-12)A-nine year study was carried out to investigate changes in herbaceous species composition in an area invaded by Cenchrus biflorus Roxb, an exotic invader grass species. The study ensued termination of livestock and human ... -
Antioxidant and antibacterial constituents from Morus nigra
(2011-06)The objective of this study was to isolate and characterize the constituents of the local Morus nigra L. (Black mulberry), to compare its constituents with other studied Mulberries and to evaluate its anti- oxidative and ... -
Potential of traditional food plants in rural household food security in Botswana
(Academic Journals, 2011-06-11)Botswana is endowed with a variety of traditional food plants which grow annually despite erratic rainfall. The most common traditional food plants are leafy vegetables (for example, Amaranthus, Cleome, Conchorus and Vigna ... -
Evaluation of bacillus thuringiensis (var. kurstaki), spinosad and cypermethrin for the control of diamondback moth (plutella xylostella l.) on cabbage.
(Botswana University of Agriculture & Natural Resources, 2011-07)An experiment was conducted al the Botswana College of Agriculture (BCA), Gaborone, Botswana (24° 55’S, 25" 95’E) at an altitude of 998m above sea level to evaluate the effectiveness of Bacillus thuringiensis(Bt), ... -
Evaluation of the diversity and pest status of fruit flies on marula, Sclerocarya Birrea in Gabane, Mochudi and Rasesa
(Botswana University of Agriculture & Natural Resources, 2011-07)Manila (Sclerocarya birrea) is one of the most useful indigenous trees in Africa. The fruits of marula are used to produce useful products such as juice, jam and beer. The seed kernels are very rich in proteins and can be ... -
Spatial and temporal variations of microinvertebrates across temporary floodplains of the lower Okavango Delta, Botswana
(Elservier, 2011-08-06)The connectivity of the Okavango Delta to its temporary floodplains may reduce due to threats of increasing human water demands and climate change. Microinvertebrates in aquatic systems have a regulatory effect on juvenile ... -
Making land management more sustainable: experience implementing a new methodological framework in Botswana.
(John Wiley & Sons Ltd., 2011-09-14)It is increasingly recognised that tackling land degradation through more sustainable land management depends on incorporating multiple perspectives by using a variety of methods at multiple scales, including the perspectives ... -
Prospects and challenges of seed sector privatisation
(Academic Journals, 2011-09-26)African countries embarked on privatisation of their seed industries in the 1980s as part of the structural adjustment programmes. Botswana however, chose not to privatise its seed production services at that time. This ... -
The estimation of live weight based on linear traits in indigenous Tswana goats at various ages in Botswana.
(Springer Link, 2011-10-02)The objective of this study was to determine the usefulness of some linear body measurements in predicting live weight in indigenous Tswana goats at various ages. Data for this study were obtained from 2,783 goats sampled ... -
Application of the dual attribute time-intensity (DATI) sensory method to the temporal measurement of bitterness and astringency in sorghum.
(Wiley, 2011-12-01)Bitterness and astringency are attributes generally cited as the cause of tannin sorghums being unpalatable. The objective here was to determine the effect of sorghums with varying tannin content on bitterness and astringency ... -
Effect of storage time on internal and external characteristics of guinea fowl (Numida meleagris) eggs
(Journal of Animal Science Advances, 2012)The effect of 0, 4, 7, 10 and 14 days storage times on quality characteristics of guinea fowl (Numida meleagris) eggs was studied. Data were subjected to ANOVA using the General Linear Models (GLM) procedure of Statistical ... -
Modeling the dynamics of tuberculosis transmission in children and adults
(Science Publications, 2012)Abstract: Problem statement: The fight Against Tuberculosis (TB) has mainly focused on the adult population because children were perceived to pose a very low risk in TB transmission. This assumption ignores the potential ... -
Assessment of colour stability and palatability of beef top sirloin butts (Gluteus medius) muscle #
(Botswana University of Agriculture and Natural Resources, 2012)This study investigated the interactive effect of USDA quality and yield grades on color stability of beef top sirloin butt. Beef top sirloin butts (n = 48) were selected at a slaughter facility based on United States ... -
Rotavirus and Cryptosporidium infection in bovine calves in Southern Botswana.
(Botswana University of Agriculture and Natural resources, 2012)A cross-sectional study on prevalences of Rotavirus (RV) and Cryptosporidium parvum infections was carried out in dairy and beef calves in 31 farms over a 2-year period. Enzyme immunoassay (EIA) was to determine RV and C. ... -
Effects of substituting rice flour as fillers for wheat flour at varying levels in beef sausage production.
(Botswana University of Agriculture and Natural resources, 2012)To derive optimum benefits from agricultural products is to add value to these products. In the meat industry, sausage making is a well known process of adding value to what could otherwise be considered low quality meats ... -
Prediction of animal population dynamics with a focus on smallholder pig breeding establishments #
(Botswana University of Agriculture and Natural Resources, 2012)Botswana government has made efforts to diversify agriculture and pig production has been identified as one avenue to achieve this diversification in the livestock industry. It is important that farmers are encouraged to ...