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Economic factors affecting the level of beef production from ranching: an example of Kenya's cattle sector
(1993)An econometric method was used to determine the economic factors that influence the level of beef production from ranches in one of the range areas in Kenya. The study also used both cross section and time-series data ... -
Intestinal absorption of vitamin A in streptozotocin-induced diabetic rats.
(Diabetes Research, 1994)Diabetes mellitus is known to be associated with enhanced intestinal absorption of lipids. A validated in vitro technique was used to examine the uptake of (3H) retinol (a lipid soluble vitamin) into the jejunum and ileum ... -
Effect of Insulin Treatment or Zinc Supplementation on Vitamin A Status in Streptozotocin-Induced Diabetic Rats.
(Journal of Clinical Biochemistry and Nutrition, 1995)A Using streptozotocin-induced diabetic rats, we examined the effects of zinc supplementation and insulin treatment on the metabolic availability of vitamin A. All diabetic animals exhibited an elevated plasma glucose (>18 ... -
The metabolic availability of vitamin A (retinol) in streptozotocin-induced diabetic rats.
(University of Alberta (Canada), 1996)Using non-diabetic control and streptozotocin-induced diabetic male Wistar rats of 4-6 week duration, the metabolic availability of vitamin A (retinol) was examined. Animals were fed ad libitum a nutritionally complete ... -
Strain variation in vitamin A (retinol) status of streptozotocin-induced diabetic rats.
(International Journal for Vitamin and Nutrition Research, 1996)Decreased plasma concentrations of vitamin A (retinol) and retinol-binding protein have been previously identified in human subjects with type I diabetes mellitus. The present study was undertaken to investigate the effects ... -
Protein utilization in humans as affected by level of dietary fat
(Elsivier, 1996-01)The objective of the project was to determine the effects of level of fat with or without manganese supplementation of diets on protein status of humans. Fourteen healthy adult humans participated in a 61 day study in which ... -
Streptozotocin-induced diabetes in rats is associated with impaired metabolic availability of vitamin A (retinol).
(The British Journal of Nutrition, 1996-04)Using streptozotocin-induced diabetic Wistar rats, studies were carried out to examine the metabolic availability of vitamin A in the plasma, liver and the retina of the eye. Control and diabetic rats were fed ad lib. on ... -
Streptozotocin-induced diabetes lowers retinol-binding protein and transthyretin concentrations in rats.
(The British Journal of Nutrition, 1996-12)Retinol-binding protein (RBP) and transthyretin (TTR) in the plasma, liver and kidney, retinol in plasma, and total vitamin A in the liver were measured in rats 6 weeks after diabetes mellitus had been induced by streptozotocin ... -
Household food insecurity in sub-Saharan Africa: lessons from Kenya
(1997)Food security is one of the most challenging issues in sub-Saharan Africa which has continued to generate debate. Literature abounds showing that Africa is the only region in the world where per capita food production has ... -
Resource availability and productivity, farmer efficiency, and household food security in semi-arid Kenya
(1997)Abstract The problem of food insecurity in sub-Saharan Africa is currently one of the principal Concerns of policy makers. Food insecurity Is an Issue that has engaged researchers, Politicians, And donors in debate on ... -
Diversity, Species Composition And Some Ecological Aspects Of Terrestrial Molluscs In Mount Kenya National Park - Kenya
(1998)This study was done between November 1996 and July 1997 and sought to establish the species composition of terrestrial molluscs in Mt. Kenya National Park. The study also sought to investigate the effect of soil pH, ... -
Food and Feeding Habits of Juvenile Oreochromis leucostictus Trewavas (Teleostei=Cichlidae) in lake Naivasha and Oloidien, Kenya
(1998-04)An eight month-study (July, 1990 to February, 1991) was conducted at five different littoral habitat types of Lakes Naivasha and Oloidien, Kenya, to examine variations in dietary composition of juvenile Oreochromis ... -
The performance of Husani dairy goats under water restriction in the arid western lowlands, Eritrea
(Bulletin of Animal Health and Production in Africa, 1999)Eighteen adult Husani female goats of approximately equal age and body weight, and in their late pregnancy were purchased from Eritrean western lowlands. They were randomly assigned to three watering regimes (treatments): ... -
Livestock as Capital and a Tao I for Ex-Ante and Ex-Post Management of Food Insecurity in Semi-traditional agro-pastoral societies:an example from South East Kenya
(1999)Discussions of the roles of livestock in many societies is not something new. They have been done in anthropological, sociological and, to some extent, economic literature. However, most of these discussions are normally ... -
Influence of Settlements on Land use and Vegetation in the Rangelands of Northeastern Ethiopia: Application of Aerial Photographic Technique
(1999)Population pressure through settlements and encroachment of cultivation into pastoral prime grazing lands in and semi-and areas of Africa have resulted in the reduction of natural vegetation cover, in turn transforming ... -
Technical innovation and farm productivity growth in dry land Africa: The effects of structural adjustment on smallholders Kenya
(2000)This paper uses non-parametric approach to measure technical innovation and productivity growth at the smallholder farm-level in dry-land sub-Saharan Africa during the initial years of the structural adjustment programmes ... -
Changing land use systems and socio-economic roles of vegetation in semi-arid Africa The case of the Afar and Tigrai of Ethiopia
(2000)In recent years, increased populations and the accompanying human demands have led to changes in land-use in the drylands of sub-Saharan Africa, in turn resulting in the reduction of vegetation and other natural resources. ... -
Bedsediments organic matter and macroinvertebrate responses to changes in catchment land use along a low order tropical stream : Sagana River, Kenya
(2000)The hydrological, morphological and biological characteristics of a Kenyan low order mountain tropical stream were studied in order to assess the possible impacts of catchment land use changes from forestry to agriculture ...
