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Search Results: 1 - 10 of 572 matches for " OA;Coneglian "
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Studies with sanguinarine like alkaloids as feed additive in broiler diets
Vieira, SL;Berres, J;Reis, RN;Oyarzabal, OA;Coneglian, JLB;Freitas, DM;Pe?a, JEM;Torres, CA;
Revista Brasileira de Ciência Avícola , 2008, DOI: 10.1590/S1516-635X2008000100010
Abstract: this research included two studies evaluating the live performance of broilers fed sangrovit? (minimum of 1.5% sanguinarine, a quaternary benzo[c]phenanthridine alkaloid extracted from macleaya cordata). both studies were conducted using ross 308 female broiler chicks. birds were fed corn-soybean meal all-vegetable diets without growth promoters with 5 treatments and 8 replications in each study. in the first study, treatments were composed of a negative control without feed additive and four diets with graded increases of sangrovit of 12.5, 25, 37.5, and 50 ppm. in the second study, chicks received a similar diet from placement to 21 days of age and subsequently were given feeds with graded reductions in crude protein (cp) as follow: a negative control with 19.7% cp without sanguinarine, and then 19.7, 19.2, 18.8 and 18.3% cp supplemented with sangrovit at 20 ppm. it was demonstrated that body weight was increased when birds were fed 50 ppm of sangrovit at 21 d when compared to the negative control. also comparatively to the negative control, cumulative feed conversion was improved for birds fed with sangrovit at 37.5 ppm as well as feed intake from placement to 7 days at 12.5 ppm. no differences were observed in feed intake. birds supplemented with sangrovit and 18.8% cp had similar body weight gain and feed intake as the negative control with 19.7% cp. mortality in both studies was not correlated with the treatments. results from both studies indicate benefits of the supplementation of sangrovit in diets for broilers.
Distal Renal Tubular Acidosis, an Uncommonly diagnosed Cause of Failure to Thrive: Report of Five Cases.
OA Ajayi, OA Mokuolu
Nigerian Journal of Paediatrics , 2001,
Abstract: Five cases of distal renal tubular acidosis aged between 2 weeks and 2 months are described. The presenting features included lethargy, refusal to feed, high density of periodic respiration, vomiting and recurrent episodes of unexplained metabolic acidosis. A constant feature was failure to thrive despite caloric intakes in excess of normal requirements. The diagnosis of distal renal tubular acidosis (DRTA) was based on a urine pH>5.5 in a freshly voided urine despite concurrent or induced metabolic acidosis. All the babies responded dramatically to sodium bicarbonate supplement, as baking soda or bicarbonate of soda. The need for increased index of suspicion of DRTA in the evaluation of children in early infancy for failure to thrive and the simplicity of treatment using baking soda is discussed. Nigerian Journal of Paediatrics 2001; 28:21. pp. 21-24
Prion biology and bovine spongiform encephalopathy
Peralta,OA;
Archivos de medicina veterinaria , 2011, DOI: 10.4067/S0301-732X2011000200002
Abstract: the complex nature of prions has intrigued the scientific community during the last 70 years. since the first indication of scrapie infectivity and the experimental transmission of the scrapie agent in 1937, prions and their associated transmissible spongiform encephalopathies (tses) have been under constant investigation. tses are neurodegenerative and fatal diseases with no early diagnosis, treatment or cure. despite their diverse presentations, all tses stem from the infectious, spontaneous or hereditary conversion of the host-encoded cellular prion protein prpc into the pathogenic isoform prpsc. based on the prion hypothesis, prpc has the autocatalytic or induced capacity to change its secondary configuration from a mainly α-helix structure into predominant β-sheet configuration. another enigmatic aspect of the prion biology is the potential physiological function of prpc, a protein that is widely distributed in mammalian tissues and intensely expressed in the nervous system. prpc has been associated to several biological roles including cellular adhesion, protection and differentiation. the unpredictable properties of the prpsc and the complex presentation of tses have opened many questions yet to be answered. the potential zoonotic transmission of the bovine spongiform encephalopathy (bse) has generated intense concern in the international community over animal product biosecurity. during the last years, research in prion biology has mainly focused on determination of the pathogenesis of tses and the development of diagnostic and therapeutic methods. however, further research in prion biology is required in order to understand the complex nature of tses and how these diseases can be controlled.
Climate impacts, forest-dependent rural livelihoods and adaptation strategies in Africa: A review
OA Somorin
African Journal of Environmental Science and Technology , 2010,
Abstract: The long term contribution of forests to the livelihoods of the rural poor had been long appreciated. More than half of Africa’s fast-growing population rely directly and indirectly on forests for their livelihoods. As the continent faces stresses from poverty and economic development, another major uncertainty is looming that could alter many of the relationships between people and forests. This uncertainty is climate change. Climate impacts such as changes in temperature and rainfall patterns resulting in drought, flooding, all exert significant effect on forest ecosystems and their provision of goods and services, which form the safety nets for many African rural poor. Building adaptation strategies becomes an option for forest-dependent households and communities, and even countries whose economies largely depend on the related sectors. The review details cases of impacts, underlying causes of vulnerability, and identified coping and adaptation strategies, as reported in their National Communications by many African countries to the United Nations Framework Convention for Climate Change.
Nutritive potentials and utilization of garden snail (Limicolaria aurora) meat meal in the diet of Clarias gariepinus fingerlings
OA Sogbesan
African Journal of Biotechnology , 2006,
Abstract: The possibility of using garden snail (Limicolaria aurora) meat meal as a protein source in fish feeds was tested in Clarias gariepinus fingerlings. Five isonitrogenous (43% crude protein) diets in which garden snail meat meal was used to replace fish meal at 0%, (control diet), 25, 50, 75 and 100% inclusion levels were used for the study. The fish were fed ad-libitum for 8 weeks. Garden snail meat meal used had a crude protein content of 66.76% and ash content of 4.10%, while crude protein and ash content of fishmeal used were 72.46% and 18.22% dry weight, respectively. The lipid content of garden snail meat meal and fishmeal; 7.85% and 7.97%, respectively, was not significantly different (p0.05). The mean weight gain, relative growth and specific growth rates were highest in fish fed 25% garden snail meat meal diet. The best food conversion ratio (1.21) and protein efficiency ratio (3.69) were also recorded in fish fed 25% garden snail meat meal diet. Visceral somatic indices (2.71-17.24%) increased significantly (p0.05) with increase in the garden snail meat meal inclusion in the diets.
Where does Islamic Arbitration fit into the Judicially Recognised Ingredients of Customary Arbitration in the Nigerian Jurisprudence?
OA Ladapo
African Journal on Conflict Resolution , 2008,
Abstract: In recent times, there has been a renaissance of the Islamic heritage in the consciousness of adherents of the Islamic faith and this has sought expression in their quests to conduct their affairs in accordance with Islamic injunctions. This has become noticeable in areas where Islam is the predominant religion. In northern Nigeria, in the past decade, there has been a renewed focus on the Islam Shariah Law system, with six of the nation's thirty-six states symbolically adopting it in public proclamation. There is, however, a dearth of scholarly research on the operation of Islamic conflict resolution mechanisms in Nigeria. This situation has led to arbitrariness and uncertainty in the use of these mechanisms. This article analyses the nature and principles of Islamic arbitration, and its applicability within the wider Nigerian legal framework vis-à-vis judicially recognised alternative dispute resolution mechanisms, particularly the principles and practice of customary arbitration. African Journal on Conflict Resolution Vol. 8 (2) 2008: pp. 103-130
Impact of National Universities Commission (NUC) Accreditation Exercise on University Administrative Structure
OA Oribabor
African Research Review , 2008,
Abstract: The study examined the impact of National University Commission (NUC) accreditation exercise on university administrative structure of four selected Nigerian universities between 1995 and 1999. Data were collected through questionnaires administered to 400 staff and 200 students of four Nigerian universities. The universities were; Obafemi Awolowo University Ile-Ife, University of Ibadan, Ibadan, Olabisi Onabanjo University Ago Iwoye, and University of Ado-Ekiti. One hypothesis was generated for the study. The two sets of questionnaires - one for the students and the other for staff were used to elicit information from the respondents. The responses were tested at 0.05 level of significance using chi-square statistics. The study revealed that the accreditation exercise had no impact on administrative structure (X2 c = 70.30, X2 t = 12.59, df = 6, p<0.05) and efficiency of university staff (X2 c = 35.55; X2 t = 24.99; df = 15; p<0.05). Based on the findings of this study, recommendations were made. African Research Review Vol. 2 (3) 2008: pp. 222-235
A Critical Review of the Involvement of Teachers and Students’ Interest in Current English Language Curriculum in Nigerian Secondary
OA Oribabor
African Research Review , 2009,
Abstract: This paper evaluated the appropriateness of teaching English language in some selected secondary schools in both Urban (Ile-Ife) and Rural (Ibodi) areas respectively of former Oranmiyan and Atakunmosa Local Government Areas of Osun state, Nigeria. 150 Senior Secondary School students whose ages ranged from seventeen years six months to eighteen years three months were used for the study. Also investigated were the attitudes of the teachers to the philosophy and implementation of the new English Language curriculum. The interest of the students in the new English language curriculum was also assessed. An attitude scale and a questionnaire were used to test the relationship among the variables identified for the study. Data collected in the study were analysed using percentages and t-test to test the hypotheses generated for the study. Results showed that teachers in both urban and rural settings did not differ in their opinion that they were not involved in the planning of the new English language programme. It was discovered by the paper that there is need to involve the teachers in both rural and urban schools settings in the identification and planning of programme objectives. The non-availability of recommended instructional materials was equally discovered. The paper suggested the need for an urgent re-assessment of existing strategies for implementing the new English language programme.
Influence of timing and duration of feed restriction on growth and economic performance of finisher broiler chickens
OA Makinde
African Journal of Food, Agriculture, Nutrition and Development , 2012,
Abstract: The study investigated different feed restriction programs during an 8-week broiler chicken growing cycle as a management strategy for reducing cost of production. Initially, 90 Hubbard day-old chicks fed ad libitum a commercial starter feed supplying 24% crude protein and 3000 kcal of ME/kg for 4 weeks. Thereafter, they were randomly allotted to five different feed restriction programs (R0, R5, R56, R67 and R57) utilizing finisher diets supplying 19% crude protein and 2850 kcal of ME/kg from 5-8 weeks. Each program had three replicates and six birds per replicate. Unrestricted (R0) was the control where birds fed ad libitum. In R5, birds were restricted the 5th week; R56, 5th and 6th weeks; R67, 6th and 7th weeks, and R57, 5th and 7th weeks. However, all the feed-restricted birds fed ad libitum in the 8th week. Feed restriction involved feeding one-third feed intake of R0 birds starting from 14.00 to 18.00 h daily and performance parameters recorded. Feed restriction negatively affected growth performance as the severity of restriction increased. Final body weight, carcass weight, average daily gain and average daily feed intake were similar (P>0.05) for R0 and R5 but higher than R56, R67 and R57. However, feed restriction did not significantly affect (P>0.05) carcass and breast yields or feed conversion ratio except for R67, the least (P<0.05) feed efficient. Feed cost, cost of production and revenue declined as the period of restriction increased. However, profit or profit/kg live weight, economic efficiency (EE) of feed and relative EE of feed were highest for R0 followed by R5, R56, R57 and R67 in that order. Generally, birds restricted for 1 week performed better than those restricted for 2 weeks and birds restricted continuously for 2 weeks before the last week of re-alimentation and slaughter were inferior to others. These results suggest that the duration and timing of feed restriction can reduce cost in broiler meat production without seriously affecting performance or economics of production depending on the restriction program applied.
Multivariate Regression of Liver on Intestine of Mice: A Chemotherapeutic Evaluation of Plant Extracts
OA Adelodun
African Research Review , 2010,
Abstract: Mice infected with 50 cercariae of Schistosoma mansoni in unequal group sizes were challenged with some doses of Zingiber officinale extracts, Cremophore and Praziquantel. Data were available for the number of male and female parasites, weights of liver and intestine, and egg per gramme liver and intestine tissues. Using an analysis of covariance model, the effects of the extracts and compound on intestine were predicted. The findings revealed, with the aid of likelihood-ratio statistic, a marked improvement in the precision of the estimates of the effects on intestine when the liver was taken into consideration. Key Words: Shistosomiasis; Multivariate Regression; Likelihood-Ratio Statistics.
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