November 2012
Genome size, morphological and palynological variations, and heterostyly in some species of the genus Linum L. (Linaceae) in Iran
Heterostyly is the occurrence of flowers with different sexual organ arrangements in different plants of the same species. This floral polymorphism occurs in four sections of genus Linum. The present study compares the morphological, palynologycal and genome size (C-value content) characteristics in the long-styled and short-styled plants in three Linum species, that...
November 2012
Induction of somatic embryogenesis in recalcitrant sweetpotato (Ipomoea batatas L.) cultivars
Genetic transformation is considered as one of the most promising options for improvement of crop traits. Current transformation methods for sweetpotato depend on plant regeneration through organogenesis or somatic embryogenesis. Somatic embryogenesis and plant regeneration at a high frequency has been restricted to a few sweetpotato varieties. Three auxins namely: 2,4-dichlorophenoxyacetic acid...
November 2012
Comparative antimicrobial activity of clove and fennel essential oils against food borne pathogenic fungi and food spoilage bacteria
Antifungal and antibacterial activities of essential oils obtained from fennel seeds (Feoniculum vulgare Mill) and clove buds (Syzygium aromaticum) were studied by agar well dilution technique. Both essential oils (EOs) from fennel and clove exhibited pronounced and varying degrees of growth inhibition against fungal (86 to 39%) and bacterial pathogens (42 to 20%). Fennel oil depicted...
November 2012
Antibiotic resistance profile in community-associated Staphylococcus aureus strains isolated from a Nigerian peri-urban community
The present study was undertaken to determine the antibiotic resistance profile and the prevalence of community-associated methicillin resistant Staphylococcus aureus(CAMRSA) in Ile-Ife, south-Western Nigeria. Ear, eye, skin and soft tissue swabs were collected from 50 subjects at the Primary Health Centre of a university teaching hospital at Ile-Ife. Isolation, identification and susceptibility pattern...
November 2012
Control of whiteflies and aphids in tomato (Solanum lycopersicum L.) by fermented plant extracts of neem leaf and wild garlic
Whitefly (Bemisia tabaci, Homoptera: Aleyrodidae) and aphid (Homoptera) on tomato (Solanum lycopersicum L.) are economically important insect pests that are difficult to manage due to their resistance to a wide range of chemical pesticides. Field experiments were conducted to assess the effects of fermented plant extracts of neem (Azadirachta indica A. Juss.) leaf and wild garlic (Tulbaghia...
November 2012
Characterization of a newly isolated green microalga Scenedesmus sp. as a potential source of biodiesel
An oil-producing microalga SP-01 belonging to the genus Scenedesmus was shown to be able to grow on a media containing 5 to 30 g L-1 NaCl. Under mixotrophic condition, the maximum cell dry weight of 3.1 g L-1 and specific growth rate of 0.034 h-1 were obtained at 0.5 g L-1 NaNO3 and 6 g L-1 acetate. The effects of salinity on the biomass, lipid, and carotenoid...
November 2012
The effects of Echinacea purpurea dried extract on humoral immune response of broiler chicks to Newcastle vaccination
Nowadays, using of live and killed vaccines is usually done to prevent Newcastle disease of poultry; however, some of the poultry farms are being encountered with this disease because the available vaccines do not produce enough antibody titers. In this research, an attempt was made to investigate the effect of using an immune stimulator Echinacea purpurea on antibody production against Newcastle...
November 2012
Performance of chicken broilers fed with diets substituted with mulberry leaf powder
The effect of substituting commercial broiler diet with mulberry leaf powder on feed intake, growth rate and feed conversion efficiency was studied. Treatment diets were prepared by substituting 20, 30, 40 and 50% with mulberry leaf powder to commercial broiler feed. The crude fibre and crude protein contents of the treatment diets were higher than those of the control (100% commercial feed) but the...
November 2012
Generation of transgenic mice producing fungal xylanase in the saliva as a model for improving feed digestibility
The cell wall of animal feed grains contain a high proportion of xylan. Monogastric farm animals lack xylan-hydrolyzing enzymes in their gastro-intestinal tract. The indigestible dietary xylan impairs normal digestive function of single-stomached livestock by preventing efficient breakdown and assimilation of feed nutrients. The digestive capability of simple-stomached animals could be improved by providing...
November 2012
Safety evaluation of the leaf aqueous extract of Aloe ferox Mill extract in rats
Aloe ferox is used by communal farmers in the Eastern Cape in the treatment of gastrointestinal parasites in goats. In this study, the leaf aqueous extract of A. feroxwas evaluated for its potential toxicity, using the acute, sub-acute and chronic toxicity models in rats. The plant extract was administered by oral route at doses ranging from 200 to 1600 mg/kg. No deaths were recorded in acute...
November 2012
Antioxidant status, immune system, blood metabolites and carcass characteristic of broiler chickens fed turmeric rhizome powder under heat stress
This experiment was conducted to evaluate the effects of dietary turmeric rhizome powder (TP) on performance, blood metabolite, immune system, antioxidant status, and relative weight of organs in pre and post heat stressed broilers. Two hundred and sixty-four (264) day-old male Arian broiler chicks were randomly allotted to three dietary treatments containing 0, 0.4 or 0.8% turmeric powder. Each diet was fed to four...
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