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Search Results: 1 - 10 of 115285 matches for " Joshua O. Amimo "
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Indigenous Knowledge Used in Breeding and Management of Capra hircus Populations in Kajiado and Makueni Counties, Kenya  [PDF]
Okello George Otieno, Joseph Owino Junga, M. S. Badamana, Joshua O. Amimo
Open Journal of Genetics (OJGen) , 2015, DOI: 10.4236/ojgen.2015.53009
Abstract: The aim of this project was to study indigenous breeding practices used in management of Capra hircus (Galla and Small East African goats) populations in Kajiado County in Rift valley province and Makueni County in Eastern province. Data were obtained through a field survey using questionnaires (Appendix I) and personal observations between 1st September, 2013 and 2nd December, 2013. This study covered key characteristics of goats production and areas of goat breeding, such as general farm details, number of goats, main activities of the farmers, farming types, breeds, flock structure, feeding, housing, catastrophes, selection, mating systems, breeding systems, average age at parturition, breeding problems, and the importance of goats. Results showed that the average number of goats in Kajiado was 100.65 ± std 49.88 while in Makueni it was 12.28 ± std 6.46. The main activity of the people interviewed was farming as 58 people (96.67%) in Kajiado and 42 people (61.60%) chose farming as their main activity because this was their main source of livelihood. Flocks were dominated by breeding females at a mean of 39.06 ± std 16.75 in Kajiado and a mean of 5.62 ± std 3.50 in Makueni because females were kept to reproduce to increase the size of the flock and the males were kept majorly for cash and only one or two were left to reproduce with the females. Drought was the major catastrophe as it killed an average number of goats of 6.33 ± std 4.36. Pneumonia and diarrhoea were the major diseases according to 28 farmers (46.66%) in Kajiado and 31 farmers (51.66%) in Makueni. Ticks and fleas were the major parasites according to 42 farmers (70%) in Kajiado and 4 farmers (63.34%) in Makueni. Treatment was mostly done by the farmers individually as 54 farmers (90%) in Kajiado and 46 farmers (76.67%) in Makueni treated the animals by themselves. This was so because it was either not easy to get a veterinarian or expensive for them to hire veterinarian doctors. Some farmers used traditional medicine like mavuavui; Steganotaenia araliacea was used to treat pneumonia. Farmers also devised feeding methods during drought as 48 farmers (80.00%) in Kajiado and 23 farmers (38.33%) in Makueni cut leaves from up trees to feed the goats. When doing selection of breed, 58 farmers (96.67%) and 57 farmers (95%) considered large body size and drought resistance respectively in Kajiado. The farmers in Makueni considered age and drought resistance at equal chances of 59 farmers (98.33%). The main mating system was naturally uncontrolled as 113
Characteristics of Lactation Curves of the Kenya Alpine Dairy Goats in Smallholder Farms  [PDF]
Andrew Gitahi Marete, Reuben Oyoo Mosi, Joshua Oluoch Amimo, Joseph Owino Jung’a
Open Journal of Animal Sciences (OJAS) , 2014, DOI: 10.4236/ojas.2014.42013
Abstract: Lactation curves are a graphical representation of the milk production profile of a doe from parturition to drying up. Their shape provides information about the productivity of the doe and offers a means of explaining features of the milk production patterns of each animal. A total of 2732 daily morning milk records from 610 does of the Kenyan Alpine dairy goats’ genetic groups (50% Alpine, 75% Alpine, 87.5% Alpine and > 87.5% Alpine) and local goats (0% Alpine) kept in small-holder farms were used to evaluate factors affecting milk yield and to examine the characteristics of their lactation curve. A nonlinear mixed model was used to fit the lactation curves to all does simultaneously. The Wood’s (1967) equation was fitted within each genetic group and parity to generate genetic group and parity lactation curves. The mean lactation period was 218 ± 46 days and the model accounted for 88% of the total variation. Significant differences (P < 0.05) between genetic groups were observed in their lactation curve parameters. The estimated week of peak milk yield post kidding was: 2, 4, 6, 6 and 8 weeks; and peak yield was 0.32, 0.75, 0.91, 0.99 and 1.02 Kg/day, for 0% Alpine, 50% Alpine, 75% Alpine, 87.5% Alpine and >87.5% Alpine genetic groups respectively. Genetic group did not significantly affect rate of increase to peak yield (P > 0.05) and rate of decline from peak (P > 0.05) or persistency (P > 0.05). Parity significantly affected rate of increase to peak, rate of decrease from peak and persistency (P < 0.01). The month of kidding significantly affected the rate of increase to peak (P < 0.05) and persistency, but not rate of decrease from peak. The synchronization of breeding with season has a practical implication for the maximization of lactation yield when considered in combination with other biological and economic constraints. The superior production of the pedigree animals supports the development of composite breed types in Kenya to take advantage of the fitness of indigenous breeds, the productivity of imported dairy breeds, heterosis, and the potential for selection within the composite to improve productivity in later generations.
Motivators of Students’ Persistence on Distance Learning Programmes in Ethno-Religious Crisis States in Nigeria: Implications for Counselling  [PDF]
Fidel O. Okopi, Joshua Pindar
Psychology (PSYCH) , 2014, DOI: 10.4236/psych.2014.513165
Abstract: This study determines students’ persistence on distance learning programmes despite ethno-religious crisis in twelve Northern States in Nigeria. States selected for the study are Borno, Yobe, Adamawa, Taraba, Gombe, Bauchi, Jos, Kaduna, Kano, Niger, Kogi and Sokoto states that have suffered the worst ethno-religious crisis from 2009 to date. A survey design via ex post facto was adopted for the study. Samples for the study were distance learners, (200 to 400 levels) who registered for the 2012/2013 examination, and 480 were selected from the 12 Study Centres through purposeful, and stratified random sampling techniques. Data for the study were collected through a rating scale which was administered and collected on the spot by the research assistants. Participants were asked to rate the shortlisted factors(Intrinsic-Personal and Extrinsic-support network factors) according to their levels of perceived significant influence on why they persisted on their programmes of study, despite the ethno-religious crisis. Experts in the Directorate of Learner Support Services were used to validate the content and face validities of the instrument while test-retest reliability method was used and Cronbach Alfa 0.78 was established. Descriptive statistics and Pearson Moment Correlations Coefficient analyses were used to determine the relative rating of each motivator. The findings were intrinsic motivators like: desire to complete the programme was rated highest followed by desire for personal growth and faith in God. The least motivator was, study centre learning environment, followed by security provided at the centre and Tutorial facilitators’ responses or feedback. The Pearson Moment Correlations Coefficient analysis indicated 0.83 level of relationship between extrinsic and extrinsic motivators. Recommendations were proffered at the end of the study and implications for counselling were discussed.
Stability Analysis of Damped Cubic-Quintic Duffing Oscillator  [PDF]
Moses O. Oyesanya, Joshua I. Nwamba
World Journal of Mechanics (WJM) , 2013, DOI: 10.4236/wjm.2013.31003
Abstract:

This paper presents a comprehensive stability analysis of the dynamics of the damped cubic-quintic Duffing oscillator. We employ the derivative expansion method to investigate the slightly damped cubic-quintic Duffing oscillator obtaining a uniformly valid solution. We obtain a uniformly valid solution of the un-damped cubic-quintic Duffing oscillator as a special case of our solution. A phase plane analysis of the damped cubic-quintic Duffing oscillator is undertaken showing some chaotic dynamics which sends a signal that the oscillator may be useful as model for prediction of earth- quake occurrence.

Optimal Variational Portfolios with Inflation Protection Strategy and Efficient Frontier of Expected Value of Wealth for a Defined Contributory Pension Scheme  [PDF]
Joshua O. Okoro, Charles I. Nkeki
Journal of Mathematical Finance (JMF) , 2013, DOI: 10.4236/jmf.2013.34050
Abstract:

This paper examines optimal variational Merton portfolios (OVMP) with inflation protection strategy for a defined contribution (DC) Pension scheme. The mean and variance of the expected value of wealth for a pension plan member (PPM) are also considered in this paper. The financial market is composed of a cash account, inflation-linked bond and stock. The effective salary of the plan member is assumed to be stochastic. It was assumed that the growth rate of PPM’s salary depends on some macroeconomic factors over time. The present value of PPM’s future contribution was obtained. The sensitivity analysis of the present value of the contribution was established. The OVMP processes with inter-temporal hedging terms and inflation protection that offset any shocks to the stochastic salary of a PPM were established. The expected values of PPM’s terminal wealth, variance and efficient frontier of the three classes of assets are obtained. The efficient frontier was found to be nonlinear and parabolic in shape. In this paper, we allow the stock price to be correlated to inflation risk index, and the effective salary of the PPM is

Finite Element Modeling Of Low Heat Conducting Building Bricks  [PDF]
O. O. Oluwole, J. S. Joshua, H. O. Nwagwo
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2012, DOI: 10.4236/jmmce.2012.118069
Abstract: Heat conduction through conventional and interlocking building bricks with cavities was studied in this work. Heat transfer analysis was carried out using MATLAB? partial differential equation toolbox. Regular and staggered hole arrangements were studied. Results showed that four staggered holed interlocking bricks were effective in thermal resistance into the bricks and increasing the holes beyond four did not give any thermal resistance advantage. For the conventional bricks staggered holes did not give any thermal resistance advantage but the four-holed bricks were also adjudged to be effective in thermal resistance into the brick surface. Increasing the number of holes beyond four in conventional bricks did give some thermal resistivity advantage but very minimal. Structural strengths of holed bricks were not considered in this study.
Management of Primary Education in Nigeria: Trends, Constraints and Solutions
Joshua O. Oni
The Social Sciences , 2013,
Abstract: Primary education, in the geographical entity that is referred to presently as Nigeria, was 164 years old early this year. Before independence, the system was administered by different sets of managers including the Christian missionaries (1843-1882), the colonial government (1882-1940’s) and the regional governments (1950’s). Since, independence in 1960, the federal, state and local governments have played significant role in the administration of primary education. Poor administration has been the bane of the education system since inception. It is displayed in different ugly forms including poor timing of policy inauguration and programme implementation and pupil population explosion with the attendant result of dearth of educational resources. Statistical constraint, financial constraint and political constraint have contributed to the problem of poor management. For the system to survive, there is the need on the part of the nation to ensure political stability. It is only, when the polity is stable and all the tiers of government display the necessary political will that all the 3 constraints will be taken care of once and for all. The system will thus be invigorated and made fully prepared for the challenges in the future.
Germination Biology and Occurrence of Polyembryony in Two Forms of Cats Claw Creeper Vine, Dolichandra unguis-cati (Bignoniaceae): Implications for Its Invasiveness and Management  [PDF]
Joshua C. Buru, Kunjithapatham Dhileepan, Olusegun O. Osunkoya, Tanya Scharaschkin
American Journal of Plant Sciences (AJPS) , 2016, DOI: 10.4236/ajps.2016.73058
Abstract: Cat’s claw creeper vine, Dolichandra unguis-cati (L.) Lohmann (syn. Macfadyena unguis-cati (L.) Gentry), is a major environmental weed in Australia. Two forms (“long” and “short” pod) of the weed occur in Australia. This investigation aimed to evaluate and compare germination behavior and occurrence of polyembryony (production of multiple seedlings from a single seed) in the two forms of the weed. Seeds were germinated in growth chambers set to 10/20°C, 15/25°C, 20/30°C, 30/45°C and 25°C, representing ambient temperature conditions of the region. Germination and polyembryony were monitored over a period of 12 weeks. For all the treatments in this study, seeds from the short pod form exhibited significantly higher germination rates and higher occurrence of polyembryony than those from the long pod form. Seeds from the long pod form did not germinate at the lowest temperature of 10/20°C; in contrast, those of the short pod form germinated under this condition, albeit at a lower rate. Results from this study could explain why the short pod form of D. unguis-cati is the more widely distributed form in Australia, while the long pod form is confined to a few localities. The results have implication in predicting future ranges of both forms of the invasive D. unguis-cati, as well as inform management decisions for control of the weed.
Estudio de relación entre Niveles de Violencia en Población masculina Privada de Libertad (PPL) en El Salvador y conocimientos de VIH, Vulnerabilidad asociada con VIH/Sida
Marcos Joshua Mari?o Lozano
Población y Salud en Mesoamérica , 2012,
Abstract: El presente estudio muestra, los resultados de evaluar los niveles de violencia presentes en Personas Privadas de Libertad (PPL) asociadas a la situación del VIH/Sida y su Vulnerabilidad ante la misma. Entendiendo como Vulnerabilidad el término que hace referencia a, las condiciones que una persona puede presentar en su vida que no permiten a la misma llevar actitudes correctas basadas en un cumulo de conocimientos considerado adecuado también. De aquí surge la necesidad de realizar este estudio, con el fin de determinar las herramientas necesarias para alcanzar las metas individuales en este tipo de población, así como las mismas les permitan disminuir su condición de vulnerabilidad ante la epidemia del VIH. La investigación se llevó a cabo con PPL del Centro Penal de Ciudad Barrios en San Miguel, El Salvador. Se realizó una encuesta a 175 internos donde se tomaron en cuenta variables como: edad, ocasiones que ha sido procesado en un centro penal (reincidencia), niveles de violencia, conocimientos y actitudes correctas ante el VIH/Sida Los resultados apuntan a que la mayor parte de la población es joven y se encuentran en su primer proceso como mayores de edad. Por su parte la mayoría presenta afinidad de incorporarse a un sector laboral como una manera de generar sus propios ingresos. La mayor parte de la población encuestada, muestra que a lo largo de su vida han desarrollado elevados niveles de violencia, y una gran necesidad de conocimientos correctos sobre VIH, lo que se demuestra con los altos índices de ausencia de buenas prácticas ante la epidemia-no hay un buen uso del condón- fenómeno que refleja no estar sensibilizados sobre la situación.
Response of Common Bean to Rhizobium Inoculation and Fertilizers
Amos A. O. Musandu, Ogendo O. Joshua
Journal of Food Technology in Africa , 2001,
Abstract: Common bean (Phaseolus vulgaris) yields in Western Kenya are low and this has been attributed to low soil fertility. Field trials were conducted in farmers fields in Ukwala Division of Siaya District in Kenya during the long rains of 1998 and 1999 to determine the potential for improving bean yields through Rhizobium inoculation, and fertilizer N and P applications. The three factors: Rhizobium inoculation at two levels and fertilizers-N and P each at three levels were factorially combined to give 18 treatments. The treatments were laid out in a randomised complete block design with a split-plot structure and three replications. A popular local bean variety Okuodo was used as the test crop. During the 1998 long rains season, P significantly (P=O.05) increased the stand count after emergence, pod number per plant and the bean grain yields. Seed number per plant alone was significantly increased by fertilizer-N application. Significant interaction effects (P=O.05) were observed for NXP on the stand count after emergence and for Rhizobium inoculation XP on stand count after emergence, stand count at harvest and the bean grain yields. Rhizobium inoculation alone did not significantly affect any of the measured variables in both seasons. In 1999, only the bean grain yields were determined and were significantly (P=O.05) increased only by fertilizer P applications. The Journal of Food Technology in Africa Volume 6 No.4, 2001, pp. 121-125
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