African Journal of

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Table of Content: 22 November 2012; 11(94)

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...

Author(s): Seyed Mehdi Talebi, Masoud Sheidai, Morteza Atri, Fariba Sharifnia and Zahra Noormohammadi

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...

Author(s): A. Sefasi, J. Kreuze, M. Ghislain, S. Manrique, A. Kiggundu, G. Ssemakulaand S. B. Mukasa

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...

Author(s): Shabnam Javed, Sobia Mushtaq, Ibatsam Khokhar, Rauf Ahmad and M. Saleem Haider

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...

Author(s): Nkem Torimiro and Spencer Eden Adekola Torimiro

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...

Author(s): B. Nzanza, and P. W. Mashela

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...

Author(s): Juan Peng, Kai Yin, Jian-Ping Yuan, Guang-Xia Cao, Min Xue, Chou-Fei Wu and Jiang-Hai Wang

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...

Author(s): Adel Feizi and Farhad Dadian

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...

Author(s): Carlina FREDDIE SIMOL, Andrew ALEK TUEN, Humrawali HAZID AHMAD KHAN, John Keen CHUBO, Patricia Jie Hung KING and Kian Huat ONG

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...

Author(s): Dewu Liu, Mao Zhang, Zicong Li, Hui Xu, Gengyuan Cai and Zhenfang Wu

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...

Author(s): Maphosa, V. and Masika, P. J.

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...

Author(s): S. J. Hosseini-Vashan, A. Golian, A. Yaghobfar, A. Zarban, N. Afzali and P. Esmaeilinasab