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Modulatory Effects of Curcumin on Antioxidant Status of Benzo[a]pyrene Treated Albino Rats

This study examined the modulatory effects of Curcumin on the antioxidant status of benzo[a]pyrene-treated albino rats. Thirty albino rats were divided into five treatment groups (n=6) namely: control, benzo[a]pyrene only (1 mg/kg), benzo[a]pyrene (1 mg/kg) + Curcumin (50 mg/kg), benzo[a]pyrene (1 mg/kg) + Curcumin (100 mg/kg), Benzo[a]pyrene (1 mg/kg) + Curcumin (200 mg/kg) for 6 weeks. Rats were administered the drug (benzo[a]pyrene and Curcumin) orally, thrice a week.

Environmental Concerns

Potential impacts on the environment from the escape or release of genetically engineered organisms was the committee's greatest science-based concerns associated with animal biotechnology, in large part due to the uncertainty inherent in identifying environmental problems early on and the difficulty of remediation once a problem has been identified. The intent of this chapter is to identify the risks to the environment posed by GE animals, prioritize those risks, and explain the criteria used for selecting them.

Animal Health and Welfare

The effects of genetic engineering on animal health and welfare are of significant public concern (Mench, 1999). Ideas about animal welfare are shaped by cultural attitudes toward animals (Burghart and Herzog, 1989), and animal welfare has proven difficult to assess because it is so multifaceted and involves ethical judgments (Mason and Mendl, 1993; Fraser, 1999).

Strengths and Weaknesses of the Current Regulatory Framework

The executive branch formally announced its biotechnology policy on June 26, 1986, in the form of the Coordinated Framework for Regulation of Biotechnology (OSTP 1986), as reviewed previously and described in more detail in this article. The three lead agencies with responsibility for implementation of the policy were the US Department of Agriculture (USDA), the Department of Health and Human Services (DHHS), and the Environmental Protection Agency (EPA).

The impact of insecticide usage in cowpea, Vigna unguiculata (L.), productivity in Mokwa, Niger state, Nigeria

A checklist of indigenous pests of cowpea, Vigna unguiculata (L.) at Mokwa, Niger state, Nigeria, and their relative abundance were reported. The impacts of two most commonly used insecticides in the locality, i.e. Dimethoate and Cypermethrin, on cowpea productivity were elucidated. Thirteen insect species were listed, three of which were prominent at the seedling and prereproductive stages. These include: - Ootheca mutabilis, Empoasca dolichi and Medythia quarterna.

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Kola production and utilization for economic development

Kola is an important cash crop to a significant proportion of Nigerian population who are involved in kola farming, trading and industrial utilization. Research on the improvement of kola productivity and utilization is one of the major mandates of the Cocoa Research Institute of Nigeria (CRIN), where remarkable achievements have been made on kola. CRIN has developed improved Cola nitida hybrids with short maturation period of 5 years and an annual average yield of about 2000 nuts/tree/year.

Strategies for the control of pests and diseases for sustainable cocoa production in Nigeria

Pests and diseases have largely contributed to the declining productivity of cocoa in Nigeria. About 25 – 30% loss in yield of cocoa has been attribute to the cocoa mired, Sahlbergella singularis. 17% is lost through the feeding of the cocoa pod borer Characoma strictigrapta while losses attributable to the major disease of cocoa (the black pod disease caused by Phytophtora megakarya) range from 30 – 90% in Nigeria. The estimated farm holdings of peasant farmers account for 90% of the 700,000 hectares of land under cocoa cultivation.

Combined mode toxicity of different crude extracts of plants to mango mealybug Rastrococcus invadens Williams

Six acetone extracts of Annona senegalensis root-bark; Tephrosia vogelii root-bark; stem-bark, leaf and seed; Tephrosia candida seed; and two aqueous residue extracts of neem seed kernel and Annona muricata seed kernel were tested for bioactivity against Rasdtrococcus invadens Williams at different concentrations with three replications. The six acetone extracts were highly toxic to adult female R. invadens in the combined mode experiment. T. vogelii stem-bark, followed by its seed; A. senegalensis root-bark and T. candida seeds extracts, was most insecticidal to the mealybug.

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Evaluation of rice breeding lines for combined effect of African rice gall midge and iron toxicity in Nigeria

Thirteen fixed lines from the cross of FARO 12 and 44 were evaluated at Edozhigi and Gara villages, located in central Nigeria. The trial was conducted to select promising lines to be used for African rice gall midge (AfRGM) and iron toxicity endemic areas. The experiment was randomized complete block design replicated three times. The result showed significant differences in grain yield at Gara but not at Edozhigi. Percentage tiller damage for AfRGM was high in both locations. Iron toxicity score was also moderate for the two locations, however higher scores were obtained at Edozhigi.

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Geohelminth eggs in market soils in Benin-City, Nigeria

A survey of soil transmitted helminthes (STH) in different markets of Benin City was carried out using the test-tube floatation method. A total of three hundred (300) samples from different sections of the markets were examined and 82 (27.33%) samples had various geohelminth eggs. The parasite prevalence rates were Ascaris lumbricoides (30.99%), Necator americanus (20.25%), Trichuris trichuria (16.12%), Strongyloides stercoralis (10.33%). The prevalence of these helminth eggs is attributed to indiscriminate disposal of faeces and refuse in and around the markets.

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