Francis Kimani Njonge

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Verified

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• BVM, Msc, Ph.D. Advanced certificate in parasitology
• Associate Professor and Dean School of Natural Resources and Animal Sciences(SONRAS) at Jomo Kenyatta University of Agriculture and Technology

Kenya has the highest annual per capita milk consumption on the African continent (110 litres), and is projected to increase to 130 litres by 2030. This has supported the development of the smallholder dairy production system which supplies 80% of the milk. Dairy farming enhances nutrition and generates income for more than 1.8 million smallholder...

Kenya is a major player in the global ornamental trade, exporting substantial quantities of ornamental fish to the global market. The sector plays an important role in the country's economy through foreign exchange. However, the country's ornamental fish industry has not fully developed to generate more economic benefits. This paper sought to ident...

Most parts of Eritrea are classified as arid and semi-arid land (ASALs) which are characterised by dryness, high ambient temperatures and low precipitation. The country has three different environmental landscapes: highland, Western lowland and Eastern lowland agro-ecological zones (AEZs). The geophysical and biophysical characteristics of the AEZs...

Experiments were conducted to examine growth performance and biochemical response of Nile tilapia (Oreochromis niloticus) to spirulina (Arthrospira platensis) enhanced aquaponic system. Fingerlings of O. niloticus, with an average initial weight and total length (TL) of 3.90 ± 0.015 g and 64.04 ± 0.18 mm (Mean ± SD) respectively were randomly distr...

assesement of Moringa oleifera and its use as an anti viral drug

Indigenous cattle play a vital role in subsistence and livelihood of pastoral producers in Eritrea. In order to optimally utilize and conserve these valuable indigenous cattle genetic resources, the need to carry out an inventory of their genetic diversity was recognized. This study assessed the genetic variability, population structure and admixtu...

Abstract Cattle production plays important socio-economic roles at household and national levels in Eritrea. The grazed cattle sector dominates the agricultural production occurring mainly in pastoral and agro-pastoral systems. Indigenous cattle breeds are almost exclusively reared in the two production systems. The breeds have notable physical dif...

A feeding trial was performed to evaluate response of grower broiler chicken (Gallus gullus domesticus) to dietary replacement of maize (Zea mays) with low-tannin grain sorghum, Sorghum bicolor (LTS) in a smallholder poultry farm setting in Kenya. One hundred and twenty mixed-sex broiler chicks were allocated to three dietary treatments (1, 2 and 3...

The aim of the study was to determine the prevalence of helminths in cattle in Kirinyaga County in association with the agro-ecological zones, breed types and animal management styles. Epidemiological data was collected using a questionnaire survey administered to 244 respondents. Fecal samples from cattle were collected within a period of four mon...

The gastrointestinal tract (GIT) of animals harbor a variety of parasites particularly helminths, which causes clinical and sub-clinical parasitism. These parasites adversely affect the health status of animals and cause enormous economic losses to the livestock industry. The aim of this study was to determine the prevalence of helminths in cattle...

The chemical composition and in situ dry matter (DM) and organic matter (OM) degradability of seven different cereal crop residues were evaluated in this study. They included the Sorghum stovers (SS) and its threshed head residues (STH), millet stovers (MS) and its threshed head residues (MTH), corn stover (CS), wheat (WS) and barley (BS) straws. A...

This study was carried out to determine the chemical composition and in situ degradability of agro-industrial by-products found in Eritrea. Three categories of by-products were evaluated and were the milling industry (wheat bran; WB, short; WS, and middling; WM), brewery (brewers’ dry grain; BDG, hops; BDH, and yeast; BDY) and sesame cakes (sesame...

In design of animal production development plans, various constraints that limit the increase in animal numbers and productivity are considered. Sufficient and quality feed resource has been identified as the main limiting factor to increases in flock sizes especially in the tropics where feed quality and quantity fluctuates within and between year...

Poultry keeping is one of the most popular livestock enterprises in Kenya, as it represents one of the opportunities smallholders have for saving, investment, and security against risk. The high cost of feed is due to prevalent use of maize as the main energy ingredients, that is in direct competition with human food, or in short supply. Low cost a...

Cellulose is an inexpensive, renewable, bio-based and an abundant raw material suitable for the development of filter membranes for water purification. This is because it has numerous functional groups that afford ease of modification to create active surfaces upon chemical modification. In this study, cellulose was isolated from two abundant bioma...

Prosopis juliflora, a multipurpose dry land tree or shrub introduced to Kenya due to concern about desertification, deforestation and fuelwood shortages, has become invasive, forming dense, impenetrable thickets, associated with unfavorable impacts on human economic activities. It has soothing, astringent, antifungal and antiseptic properties and i...

Haemonchus contortus is one of the most prevalent and highly pathogenic nematode parasites of small ruminants. Development of resistance and degradation of active compounds of conventional anthelmintic drugs prompted evaluation of encapsulated medicinal plant extracts as alternative anthelmintics. The in vitro ovicidal activity of encapsulated extr...

This paper presents research work done on the applicability and viability of geopolymer technology on the various types of soils present in Kenya. The main aim is to provide an alternative building material to the conventional materials available in Kenya. Stone Mining activities in Kenya have generated a lot of aluminosilicate waste that can be a...

A cross sectional survey questionnaire was administered in 520 livestock farms in Kisii and Bungoma counties of western Kenya. The objective was to determine factors influencing adoption of zero grazing farming and the impact of zero grazing on farmers’ knowledge of the cattle reproductive parameters. Data were analyzed using logistic regression, t...

In vivo anthelmintic activity of a herbal drug processed through spray-drying from Prosopis juliflora (Sw.) DC) and Entada leptostachya (Harms) against gastrointestinal nematodes of sheep is described and reported for the first time in this work. Maximum percent egg count reduction (%ECR) of 80.95% in egg per gram of faeces (EPG) on day 11 post-tre...

Cystic Echinococcosis (CE) is caused by the larval stage of the tapeworm Echinococcus granulosus. The disease occurs worldwide, and is highly endemic in parts of Kenya, especially Turkana and Maasai areas. The life cycle involves dogs and other canids as definitive hosts and livestock as intermediate hosts. Humans are aberrant intermediate hosts. I...

Aim: Many medicinal plants have been used traditionally in treating ailments in humans and animals. However, for most of herbal remedies, no scientific toxicity profiles exist in literature. In this study, the safety profile of an herbal extract mixture containing Entada leptostachya (EL) and Prosopis juliflora (PJ) was determined using acute oral...

Prosopis juliflora, a multipurpose dry land tree or shrub introduced to Kenya due to concern about desertification, deforestation and fuelwood shortages, has become invasive, forming dense, impenetrable thickets, associated with unfavorable impacts on human economic activities. It has soothing, astringent, antifungal and antiseptic properties and i...

Helminthes infestation is a major constraint to livestock production. Increasing anthelmintic resistance and the impact of conventional anthelmintics on the environment has led to increased interest on new novel plant-based compounds. In this study, the in vivo activity of a herbal extract mixture containing Entada leptostachya and Prosopis juliflo...

The aim of this study was to assess and validate the herbal anthelmintic remedies used by farmers in Kirinyaga county, Kenya for the treatment of their cattle against gastrointestinal nematodes. The herbs used were identified via questionnaire surveys through focused group discussions. The aqueous extracts of plants used: Aspillia pluriseta, Vernon...

Eleven medicinal plants used by traditional healers in Machakos and Kitui District were screened, namely: Ajuga remota Benth, Aloe secundiflora Engl, Amaranthus hybridus L, Cassia didymobotrya Fes, Croton macrostachyus Del, Entada leptostachya Harms, Erythrina abyssinica DC, Harrisonia abyssinica Oliv, Schkuhria pinnata O. Ktze, Terminalia kilimand...

Seven medicinal plant extracts traditionally used in Kenya, mainly for management of infectious conditions, were chosen and screened for their antibacterial activity against Gram-negative (Pseudomonas aeruginosa and Escherichia coli) and Gram-positive (Bacillus cereus and Staphylococcus aureus) bacteria. Antibacterial activity was tested using the...

Igarashi, I., Njonge, F. K., Kaneko, Y., and Nakamura, Y. 1998.Babesia bigemina:In vitroandin vivoeffects of curdlan sulfate on growth of parasites.Experimental Parasitology90, 290–293.