Molecular detection, characterisation and serological survey of chicken astrovirus from broiler flocks in Malaysia

Astroviruses have been associated with enteric and extra-intestinal disorders in many animal species, including chickens. Here, we describe the detection and characterisation of chicken astrovirus (CAstV) in broilers and its seroprevalence in broiler breeder flocks. Based on PCR protocol, viral confirmation was carried out on clinical tissue samples from broiler chickens suffering from uneven growth and poor performance. The tissues were molecularly detected for CAstV with differential diagnostic testing against the Newcastle disease virus, infectious bronchitis virus, avian nephritis virus, avian rotavirus, fowl adenovirus and avian reovirus. Polymerase gene-based phylogenetic analyses of the twenty samples detected positive for CAstV indicate they belong to Group I and are related to strains from the US, UK, India and Poland. From these 20 samples, CastV could be isolated from 3 samples upon inoculation in 5-day-old specific-pathogenfree (SPF) embryonated chicken eggs (ECE); virus-infected embryos showed dwarfing, haemorrhages, oedema and gelatinous lesions at harvest. The enzymelinked immunosorbent assay (ELISA) results revealed a high prevalence of antibodies against CAstV amongst the broiler breeder flocks tested. It is the first study that describes the detection and prevalence of CAstV in broiler chickens and broiler breeder flocks in Malaysia

Polynomial Regression Model of Making Cost Prediction In Mixed Cost Analysis

Regression analysis is used across business fields for tasks as diverse as systematic risk estimation, production and operations management, and statistical inference. This paper presents the cubic polynomial least square regression as a robust alternative method of making cost prediction in business rather than the usual linear regression.The study reveals that polynomial regression is a better alternative with a very high coefficient of determination. Keywords: Polynomial regression, linear regression, high-low method, cost prediction, mixed cost

Predictors of death and production performance of layer chickens in opened and sealed pens in a tropical savannah environment

BACKGROUND: Layer chickens are exposed to high risks of production losses and mortality with impact on farm profitability. The harsh tropical climate and severe disease outbreaks, poor biosecurity, sub-minimal vaccination and treatment protocols, poor management practices, poor chick quality, feed-associated causes, and unintended accidents oftentimes aggravate mortality and negatively affect egg production. The objectives of this study were to estimate the probability of survival and evaluate risk factors for death under different intensive housing conditions in a tropical climate, and to assess the production performance in the housing systems. RESULTS: Daily mean mortality percentages and egg production figures were significantly lower and higher in the sealed pens and open houses (P < 0. 001) respectively. The total mean feed consumption/bird/day was similar for the open sided and sealed pens but the mean feed quantity per egg produce was significantly lower in the sealed pens ((P < 0.005). Seasons differently impacted on mortality with the hot-dry season producing significantly higher risk of mortality (61 times) and reduced egg production. Other parameters also differed except the egg production during the cold-dry season. Layers in sealed pens appear to have higher probability of survival and the Kaplan-Meir survival curves differed for each pen; ≥78 weeks old layer have higher probability of survival compared with the younger chickens and the 19–38 weeks age category are at highest risk of death (P < 0.001). The hazard-ratio for mortality of layers raised in sealed pens was 0.568 (56.8%). CONCLUSION: Reasons for spiked mortality in layer chickens may not always be associated with disease. Hot-dry climatic environment is associated with heat stress, waning immunity and inefficient feed usage and increase probability of death with reduced egg production; usage of environmentally controlled building in conditions where environmental temperature may rise significantly above 25°C will reduce this impact. Since younger birds (19–38 weeks) are at higher risk of death due to stress of coming into production, management changes and diseases, critical implementation of protocols that will reduce death at this precarious period becomes mandatory. Whether older chickens’ better protection from death is associated with many prophylactic and metaphylactic regimen of medications/vaccination will need further investigation.http://www.biomedcentral.com/bmcvetres/am201

Knowledge of School Health Programme among Public Primary School Teachers in Sokoto Metropolis, Northwestern Nigeria

Background: School health program takes care of the health needs of a significant proportion of the population, especially in the third world countries, by ensuring that children of school age remain healthy and benefit maximally from their education. This study aimed to assess the knowledge of School Health Programme (SHP) among primary school teachers in Sokoto metropolis, northwestern, Nigeria.Methods: A cross-sectional study was conducted among 382 public primary school teachers that were selected by multistage sampling technique. Data was collected using a structured, self-administered questionnaire. Proportions and adjusted odds ratios (OR) were calculated with 95% confidence intervals (CI) in a binary logistic regression model. All levels of significance were set at p &lt; 0.05.Results: The mean age of the respondents was 34.8 ± 8.6 years. More than half of the respondents were Nigerian Certificate in Education (NCE) holders 245 (64.1%). Knowledge of SHP was good in 198 (51.8%) of the respondents. The predictors of good knowledge were belonging to other ethnicity (aOR: 3.70; 95% CI=1.11–12.50, p=0.034), having degree or postgraduate qualification in education (aOR: 4.55; 95% CI=2.63–7.69, p&lt;0.001) and having worked for two or more decades (aOR: 4.15; 95% CI=1.34–12.78, p=0.011)Conclusion: Nearly half of the respondents had poor knowledge of SHP and this is likely to deny a large number of school children of being healthy and benefitting from th eir education. Awareness campaigns and trainings on SHP to fill in the knowledge gap is highly recommended

Obstructive urolithiasis in ouda-yankasa ram: case report

Obstructive urolithiasis is the retention of urine subsequent to the lodgement of calculi inthe urinary tract from the kidney up to the urethral orifice. This report describes the postmortem findings and chemical analysis findings of the calculi in an 18-month old Ouda-Yankasa cross ram presented at the Large Animal Clinic of the Veterinary TeachingHospital, Usmanu Danfodiyo University, Sokoto. The patient was presented on 20th ofMarch, 2013 with reports of anorexia, disinclination to drink water and anuria thatdeveloped four days before presentation at the clinic. On clinical examination, urethralblockage and mild ascites were observed. Cystocentesis was performed to relieve thepatient and plain radiograph taken but was not diagnostic. The patient died beforedefinitive diagnosis was made for rational treatment. The post mortem findings includefrothy exudate in the trachea and bronchial airways, congestion of the lungs,hydroperitoneum with recovered fluid measuring 2,350 ml, splenomegaly,hydronephrosis, distended urinary bladder, severe haemorrhagic cystitis, urinary calculiin the bladder and throughout the urethral length and urethral stricture. The urinarycalculi recovered were white, friable and amorphous, ranging from small particles to 5mm in diameter. Histopathologic section of the kidney showed atrophied glomeruli. Itcan thus be concluded that the atrophied glomeruli in turn impaired glomerular filtrationthat invariably pre-disposed the patient to uraemia leading to its death. The chemicalanalysis of the calculi showed that the calculi was either oxalate, phosphate or silicate, orany of these mixtures.Keywords: Ouda-Yankasa ram, Obstructive urolithiasis, Calculi, Urethral blockage, Ascites, Uraemi

STUDENT RESIDENCE AS FACTOR AFFECTING USE OF LIBRARY BY THE UNDERGRADUATE STUDENTS OF TWO FEDERAL UNIVERSITIES IN NORTH-CENTRAL, NIGERIA.

This study focused on student residence as factor affecting use of library by the undergraduate students of two Universities in North-Central Nigeria. It adopted a descriptive survey design and had a population of 11,732 undergraduate students from two selected federal universities in North-Central Nigeria. The study used proportionate stratified random sampling technique to sample 500 undergraduate students. Five hundred (500) copies of questionnaire were distributed and four hundred and twenty nine (429) returned; representing a return rate of 86%. The data collected were analysed using descriptive statistics of percentages as well as mean and standard deviation frequency. The decision rule for research questions one through three was based on whether the mean score value was lower than or above the criterion mean value of 2.50 bench-mark. The findings of the study revealed that the use of library resources among undergraduate students is relatively low. The study also revealed that close proximity of libraries to student’s hostels (36.3%) positively affects the undergraduate students’ use of library resources though the effect is mild. Finally, the study recommended that University and Library Management in the universities studied should always consider the need for students’ hostels to be located close to the university libraries. This would no doubt enhance the students’ use of library. Also, university management should endeavour to provide Internet services in the entire campuses and hostels so as to improve the academic performance of the students

Assessing the viability of a grid-connected PV power plant in Mubi, Adamawa State, Nigeria

This paper is based on a techno-economic analysis and the environmental impact of a proposed 1 MW solar photovoltaic (PV) power plant at the main campus of the Federal Polytechnic Mubi (FPM) in north-eastern Nigeria. A photovoltaic power plant converts solar radiation into electricity that can be used as a source of electrical power to meet the daily energy requirements of homes, equipment, and all tertiary institutions. RETScreen Expert software was used to evaluate the techno-economic and environmental sustainability of installing a grid-connected PV power plant. The research results revealed that with an annual solar radiation of 5.74 kWh/m2/day, the maximum annual energy production was estimated to be 1,550.98 MWh. It was discovered that the maximum energy production in March was 146.89 MWh. The project’s profitability and economic sustainability were determined with a good internal rate of return (IRR) of 11.9% and a positive net present value (NPV) of $681,164. The proposed PV power plant has a simple payback period of 11.4 years. The maximum greenhouse gas (GHG) emission reduction is 670.9 tCO2, equivalent to 61.7 ha of forest-absorbing carbon emissions

Knowledge of health effects and determinants of psychoactive substance use among secondary school students in Sokoto Metropolis, Nigeria

Introduction:&nbsp;psychoactive substance use (PSU) is a patterned use of a drug in which the user consumes the substance in amounts or methods which are harmful to themselves or others. Psychoactive substance use takes a considerable toll on financial status, academic achievement and health status of addicts. In Nigeria, PSU is on the increase, one of the most disturbing health-related problems and a leading cause of premature death among school aged population worldwide. We therefore, determined the knowledge of health effects and determinants of psychoactive substance use among secondary school students in Sokoto Metropolis, Nigeria. Methods:&nbsp;we conducted a cross-sectional study among 430 secondary school students that were selected using multistage sampling in Sokoto, Northwestern, Nigeria from April to May 2019. We collected data using a semi-structured, interviewer-administered questionnaire. We calculated proportions and adjusted odds ratios (OR) with 95% confidence intervals (CI) in a binary logistic regression model. Results:&nbsp;knowledge of health effects of PSU was good in 38.1% of the respondents with a mean score of 19.6 ± 10.0. The overall prevalence of PSU was high among current users (16.3%), male participants (78.6%) and those aged 17-years or more (68.6%). Independent predictors of current use of psychoactive substances were poor knowledge of health effects (aOR: 4.1, 95% CI: 1.7-10.0) and father´s use of psychoactive substances (aOR: 10.3, 95% CI= 1.9-57.1). Conclusion:&nbsp;knowledge of health effects of psychoactive substances was generally poor among the participants with an associated high prevalence among current users. Poor knowledge of its health effects determines the use of psychoactive substances. We conducted awareness campaigns and health talk on health effects of PSU to secondary school students in the state. The Federal Ministry of Education should ensure that PSU-related topics are incorporated in the secondary school curriculum

COVID-19 Preventive Practices, Psychological Distress, and Reported Barriers to Healthcare Access during the Pandemic among Adult Community Members in Sub-Saharan Africa: A Phone Survey

The COVID-19 pandemic has had serious negative health and economic impacts in sub-Saharan Africa. Continuous monitoring of these impacts is crucial to formulate interventions to minimize the consequences of COVID-19. This study surveyed 2,829 adults in urban and rural sites among five sub-Saharan African countries: Burkina Faso, Ethiopia, Nigeria, Tanzania, and Ghana. Participants completed a mobile phone survey that assessed self-reported sociodemographics, COVID-19 preventive practices, psychological distress, and barriers to healthcare access. A modified Poisson regression model was used to estimate adjusted prevalence ratios (aPRs) and 95% CIs to investigate potential factors related to psychological distress and barriers to reduced healthcare access. At least 15.6% of adults reported experiencing any psychological distress in the previous 2 weeks, and 10.5% reported that at least one essential healthcare service was difficult to access 2 years into the pandemic. The majority of participants reported using several COVID-19 preventive methods, with varying proportions across the sites. Participants in the urban site of Ouagadougou, Burkina Faso (aPR: 2.29; 95% CI: 1.74–3.03) and in the rural site of Kintampo, Ghana (aPR: 1.68; 95% CI: 1.21–2.34) had a higher likelihood of experiencing any psychological distress compared with those in the rural area of Nouna, Burkina Faso. Loss of employment due to COVID-19 (aPR: 1.77; 95% CI: 1.47–2.11) was also associated with an increased prevalence of psychological distress. The number of children under 5 years in the household (aPR: 1.23; 95% CI: 1.14–1.33) and participant self-reported psychological distress (aPR: 1.83; 95% CI: 1.48–2.27) were associated with an increased prevalence of reporting barriers to accessing health services, whereas wage employment (aPR: 0.67; 95% CI: 0.49–0.90) was associated with decreased prevalence of reporting barriers to accessing health services. Overall, we found a high prevalence of psychological distress and interruptions in access to healthcare services 2 years into the pandemic across five sub-Saharan African countries. Increased effort and attention should be given to addressing the negative impacts of COVID-19 on psychological distress. An equitable and collaborative approach to new and existing preventive measures for COVID-19 is crucial to limit the consequences of COVID-19 on the health of adults in sub-Saharan Africa