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Now showing items 121-140 of 680
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Control of Cowpea Weevil, Callosobruchus Maculatus (F.) (Coleoptera: Bruchidae), Using Natural Plant Products
(MDPI, 2014-12-31)A laboratory study was conducted to investigate the effects of natural products on the reproduction and damage of Callosobruchus maculatus, the cowpea weevil, on cowpea seeds at Botswana College of Agriculture in Gaborone, ... -
Cooling laying hens by intermittent partial surface sprinkling
(American Society of Agricultural and Biological Engineers, 2000)This study investigated the efficacy of intermittent partial surface sprinkling to cool caged layers at 20, 38, and 56 weeks of age. Ten birds were used per age group with two birds per paired trial (Experiment, Expt, and ... -
Correlated responses in tissue weights measured in vivo by computer tomography in Dorset Down sheep selected for lean tissue growth
(Bureau for Scientific Publications, 2003)The aim of this study was to estimate correlated responses in lean, fat and bone weights in vivo in Dorset Down sheep selected for lean tissue growth. Over the period 1986-1992 inclusive, the lean tissue growth line had ... -
Correlations between Anthropometric Measurements and Sports Discipline Aptitude.
(MDPI, 2022-06-22)Background: Sports specialization is required for the advancement of elite-level skills of a competitor. Therefore, this study attempted to assess the applicability of anthropometric measurements for a tailored selection ... -
A critical analysis of disease-associated DNA polymorphisms in the genes of cattle, goat, sheep, and pig
(Springer Verlag, 2008-04)Genetic variations through their effects on gene expression and protein function underlie disease susceptibility in farm animal species. The variations are in the form of single nucleotide polymorphisms, deletions/insertions ... -
A critical analysis of production-associated DNA polymorphisms in the genes of cattle, goat, sheep, and pig
(Springer, 2008-09)Increasing productivity is one of the main objectives in animal production. Traditional breeding methods have led to increased gains in some traits but gains are not easily attainable in traits with low heritabilities. ... -
A critical look at the use of exotic bulls in traditional beff farming in Botswana.
(South African Journal of Animal Science, 1999)Data of indigenous and exotic bull breeds used between 1987 and 1995 were available from Ramatlabama Bull Stud and Artificial Insemination Laboratory. The bull breeds include indigenous breeds: Tswana, Tull, Bonsmara and ... -
Cross-sectional prevalence of Fasciola gigantica infections in beef cattle in Botswana
(Springer Link, 2018-04-26)A cross-sectional study was carried out to determine the prevalence and distribution of Fasciola gigantica infections in communally grazed and ranch-grazed beef cattle through coprological examination. A total of 8646 ... -
Cryptosporidium infection in cattle in southern Botswana
(Botswana University of Agriculture & Natural Resources, 2005)A parasitological survey was conducted to determine the prevalence of Cryptosporidium infection in cattle in Gaborone, Lobatse, Mochudi and Molepolole veterinary districts. Faecal samples from 137 dairy and beef calves ... -
Cryptosporidium infection in pigs determined by two different methods and its impact on farm environment in southern Botswana.
(Botswana University of Agriculture and Natural resources, 2016)The objective of this study was to determine cryptosporidium infection in pigs in southern Botswana. During October 2009 to April 2012, fecal samples collected from 407 animals of 12 commercial piggeries were screened for ... -
Culicoides (Diptera: Ceratopogonidae) associated with laying chickens at Sebele, Gaborone, Botswana.
(Cambridge University Press, 2007-09-18)A total of 2083 Culicoides spp. were collected in an ultraviolet light trap hung from the rafters of a laying chicken house at a location in Sebele, giving a mean daily catch of 208.3 biting midges. C. imicola was the most ... -
Current approaches to Alectra vogelii control in cowpea.
(African Journals Online, 2013-03-14)Alectra vogelii (L.) Benth is a parasitic weed in the family Scrophulariaceae that causes substantial damage by attaching onto the cowpea, Vigna unguiculata (L. Walp.) plant and tapping nutrients from it. Cowpea is one of ... -
Current state and updating of heat and moisture production of poultry and their housing systems
(Iowa State University, 2002)An extensive literature review and comparative analysis of heat and moisture production (HP, MP) of various poultry types (layers, broilers, and turkeys) and their housing systems indicated that total heat production (THP, ... -
Cutaneous hypersensitivity reactions against unfed tick larval extract of Rhipicephalus evertsi in South African Mutton Merino, Namaqua Afrikaner and Dorper sheep
(Elsevier:, 2018-07-23)Indigenous Namaqua Afrikaner (NA) sheep have been reported to be more resistant to tick infestation than the commercial Dorper and South African Mutton Merino (SAMM) breeds. The aim of this study was to compare cutaneous ... -
Dam Water Level Prediction Using Vector AutoRegression, Random Forest Regression and MLP-ANN Models Based on Land-Use and Climate Factors.
(MDPI, 2022-11-11)To predict the variability of dam water levels, parametric Multivariate Linear Regression (MLR), stochastic Vector AutoRegressive (VAR), Random Forest Regression (RFR) and Multilayer Perceptron (MLP) Artificial Neural ... -
Deactivation Effects of Polyethylene Glycol (PEG) on in vitro Dry Matter Digestibility of Colophospermum mopane (Mophane) and Acacia Browse Trees in Botswana
(Asian Network for Scientific Information, 2006)This trial evaluated the deactivation effects of PEG 6000 on in vitro dry matter digestibility (IVDMD) of Colophospermum mopane (Mophane) and acacia browse trees. Samples were collected from Sebele Content farm except for ... -
Decomposition dynamics of leaves of six indigenous fruit trees commonly found on croplands of southern Africa
(Botswana University of Agriculture & Natural Resources, 2005)Leaf litter decomposition plays a crucial role in the cycling of both nutrients and energy in the tropical croplands. A field experiment was conducted at Botswana College of Agriculture’s Research Farm in 2003 to compare ... -
Demographic parameters of cowpea aphid Aphis craccivora (Homoptera: Aphididae) on different Botswana cowpea landraces
(Cambridge University Press, 2012-12-01)The variation in demographic parameters (namely survival and fecundity, intrinsic rate of natural increase pre-reproductive period and relative growth rate) was used to assess the resistance of cowpea landraces (namely ... -
Deposition rates of atmospheric particulates determined from 210Pb measurements in soils and air
(HARD Publishing, 2010)Deposition rates of atmospheric particles were determined using previously published 210Pb data in soils and air. The dry deposition velocities for moorland and woodland soils were 2.2±1.8 and 9±2 mm• s-1, respectively. ... -
Design and development of a borehole pumping and water level monitoring control system in Botswana
(Botswana University of Agriculture & Natural Resources, 2017-11-07)Botswana experiences recurrent droughts and has limited surface water resources with the average annual rainfall varying from a minimum of less than 250 mm in the Southwest region and a maximum of about 650 mm in the ...