FEED RESTRICTION DURING PREGNANCY WITH DIETARY VITAMIN E INCLUSION: EFFECT ON WEIGHT OF GESTATING RABBIT DOES IN A TROPICAL ENVIRONMENT

This study evaluated the effect of feed restriction and vitamin E inclusion during pregnancy on weight of does.Sixty rabbits of 20 weeks old ranging from 1.7-2.0 kg were randomly assigned into 12 treatments of 5 replicatesduring pregnancy. The rabbit does were subjected to two levels of quantitative feed restriction (0%, 15%) at threeperiods of gestation (15-19 days, 20- 24 days and 25-29 days) with or without vitamin E inclusion (0 and300mg/kg). Data obtained were arranged in a 2×3×2 factorial arrangement. Interactive effects showed that higherdoe weight at kindling was obtained for rabbit does with 15% restriction at 15-19 days of gestation withoutvitamin E inclusion. Levels and periods of feed restriction applied during pregnancy did not have detrimentaleffects on the body condition of the does. Furthermore, higher doe weight at weaning obtained for gestating does(15% restriction) with vitamin E inclusion at 15-19 days and 20-24 days of gestation showed that the rabbit doeswere able to gain more weight after kindling. Hence, it was concluded that feed restriction, and periods of feedrestriction, with or without vitamin E inclusion during pregnancy improved body condition of does as there wasno abortion or excessive weight loss of the does. Thus, feed restriction can be exploited for gestating rabbit doesduring the periods of feed scarcity as this will not affect the body conditions of the pregnant female rabbits

Denture impaction in the oesophagus: correlation of site and duration of impaction with sequelae

Background: Denture restores aesthesis and function of missing teeth. Accidentally swallowed denture is an otorhinolaryngology emergency. The types of denture base and oesophageal anatomy infuluence the site of impaction.Objective: To review site of denture impaction and factors associated with site of impaction. To correlate site and duration of denture impaction before removal with associated sequelae.Method: A retrospective study of 27 patients managed in Otorhinolaryngology Department of University College Hospital Ibadan, Nigeria for oesophageal partial denture impaction, between August 2006 and September 2016. The demographic and clinical data of the patients were extracted from the hospital records, and statistical tables were used to illustrate the data.Results: A total of 27 patients; 14(51.9%) males and 13(48.1%) females, (M: F, 1.1:1) were studied. The age ranged from 24 to 77 years (mean age 49.0 ± 14.2years). Dentures were worn for 3 to 30 years (mean 3.8 ± 2.3years) without follow-up visit to dentist and 85.2% were upper dentures. All patients had history of accidental ingestion of denture, and the mean site of impaction was 18.2 ± 3.2cm from upper incisor, typically at upper cervical oesophagus in elderly patients and in lower oesophagus in females. There was no association between site of denture impaction, duration of denture impaction and operative findings.Conclusion: Advanced age and female gender are associated with site of denture impaction. Late hospital presentation significantly promotes sequelae associated with management of impacted dentures. It is recommended that fundamental changes in denture designs, education on regular follow-ups and avoidance of ill-fitting dentures would reduce the prevalence of denture impaction.Keywords: Denture impaction, Health education, Oesophagus, Oesophagoscopy and Nigeri

Carryover effect on carcass characteristics of growing rabbits from does subjected to feed restriction during pregnancy with or without vitamin E inclusion

Several studies have been carried out on quantitative feed restriction and its impact on carcass characteristics of growing rabbits and findings concluded that feed restriction helps in reducing carcass fat deposition in growing rabbits. Feed restriction during breeding periods have been carried out extensively in pregnant rabbit does, however, the carryover effect on the carcass characteristics of growing rabbits from does subjected to such feeding regimen have not been examined. A total of one hundred and eighty (180) weaned rabbits harvested from rabbit does subjected to maternal feed restriction (0% and 15% feed restriction) at three pregnancy periods (15-19 days, 20-24 days and 25-29 days) with or without (+/-) vitamin E were profiled for this study. Kits were randomly assigned to 12 treatments of 5 replicates, each consisting of 3 rabbits per replicate. Data obtained for carcass weight, dressed weight, chest, back, hindlimb, forelimbs, loin, back, kidney, liver, spleen, lungs and heart; these were arranged in a 2×3×2 factorial arrangement. Significantly (p<0.05) higher carcass weight and dressing percentage were obtained for growing rabbit from does fed ad libitum during pregnancy. However, significant influence recorded for carcass and dressing percentage cannot be attributed solely to the treatment during gestation since all results obtained were within acceptable or recommended ranges for healthy rabbits. Therefore, it can be concluded that maternal feed restriction during pregnancy positively influence carcass yield and dressing percentage of growing rabbits from does subjected to feed restriction between 20 – 24 days with or without Vitamin E was influenced (p<0.05)

Pharyngo-cutaneous fistula post total-laryngectomy: A local experience

Background: Pharyngo-cutaneous fistula is a major complication of total laryngectomy. Despite its significant impact on the patients' nutrition and management outcome, there is lack of consensus for recognising high-risk patients and factors associated with fistula formation. Hence, this study was aimed at determining the incidence of pharyngocutaneous fistula and factors associated with fistula formation.Methods: A retrospective collection of data on all cases of laryngeal cancer diagnosed histologically and had total laryngectomy, in the  Otorhinolaryngology Department of a tertiary centre in Southwestern, Nigeria, from 2007 – 2016. The data collected includeage, gender, tumour stage, tracheostomy, adjuvant therapy extent of laryngectomy procedure and factors for pharyngo-cutaneous fistula.Results: Forty-two patients had total laryngectomy, male to female ratio was 7.4:1 and mean age was 52.3 ± 2.1 years. All patients had pathological diagnosis of stage 3 (83.3%) and stage 4 (16.7%) laryngeal cancer, respectively. The incidence of pharyngo-cutaneous fistula was11.9% and the factors related to fistula formation were prior radiotherapy treatment and diabetes. Age, gender, neck dissection procedures, site of primary tumor and emergency tracheostomy did not contribute to fistula formation. Spontaneous fistula closure was achieved in all cases except one patient who had surgical closure.Conclusion: Pharyngo-cutaneous fistula formation post-surgery is related to the presence of co-morbidities. The high percentage of spontaneous closure underscores the need for a conservative management approach. Keywords: Laryngeal Cancer, Laryngectomy, Neck dissection, Pharyngo-cutaneous fistula, Post-surgery, Radiotherap

Selectivity of three aquatic weeds as diet for Nile tilapia (Oreochromis niloticus)

A total of sixty juvenile Oreochromis niloticus (Nile tilapia) were fed three species of aquatic weed, namely Azolla filiculoides (water fern), Elodea sp. and Pistia stratiotes (water lettuce) to determine which of the weeds will be selectively consumed, and preferred of all. A control group of twenty Nile tilapia was fed compounded feed. The selectivity of the weeds was observed based on their utilization as food source, and Azolla filiculoides was found to be highly utilized, followed by Elodea sp. and the roots of Pistia stratiotes. The growth response of the fish to the diets was found to be highest for fish fed compounded feed followed by Azolla filiculoides and Elodea sp., while Pistia stratiotes produced a negative growth trend. It is therefore postulated that Azolla filiculoides and Pista sp. are good feedstuffs for O. niloticus especially when used together with other feedstuff

The Fear of COVID-19 Infection and Its Correlates with Clinical Practice among Nigerian Dentists

Background: The COVID-19 pandemic was not without its consequences like fear and effect on the economy and health care systems, with dentists being at a high risk of contracting the infection. Objectives: The study aimed to assess the fear and risk of contracting the disease among Nigerian dentists. It also assessed a self-reported economic impact of the outbreak of COVID-19 disease on dental practices in Nigeria. Methods: An online cross-sectional survey was conducted among Nigerian dentists. The survey link was forwarded on social media platforms of Nigerian dentists. The questionnaire inquired about fear/anxiety, self-reported effect on clinic income, adequacy of knowledge on COVID-19, and use of N95 facemask, among others. The statistical level was set at 5%.  Results: A total of 314 dentists (184 males and 130 females) within the age range of 22 to 63 years responded. The majority (214; 68.2%), were confident about their knowledge of the COVID-19 disease. Almost all the participants (298; 94.9%) entertained fears of contracting the disease through practice and transmission to family members, while 54.1% strongly agreed that theN95 mask should be worn routinely. However, all (100.0%) reported an economic impact of the pandemic on dental practice. Conclusion: The fear of contracting COVID-19 infection was high among dentists. Therefore, adequate and regular use of protective and preventive measures such as N95 face mask should be a priority among dentists. Attention should be paid to constant medical evaluation to those at risk. &nbsp

EVALUATION OF TWO-STAGE SUBSURFACE FLOW CONSTRUCTED WETLANDS FOR ABATTOIR WASTEWATER MANAGEMENT

Abattoir wastewater is high in organic content, the waste recovery and treatment facility is expensive and this results in indiscriminate dumping into streams without adequate treatment. The effectiveness of using a two-stage subsurface flow constructed wetland to treat abattoir effluent was examined in this study. Diluted abattoir wastewater from Lafenwa Abattoir, Abeokuta, Ogun State, Nigeria was fed into a two-stage Vegetated Subsurface Bed Constructed Wetlands (VSBCW). The VSBCW consisted of 500 mm deep 10-15 mm diameter granite with 150 mm thick overlay of well graded sand planted with locally available Vetiveria nigritana. Grab samples were collected at selected points along Ogun river and measurement of physico-chemical parameters such as: Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD5), Electrical Conductivity (EC), Total Dissolved Solids (TDS) and Total Suspended Solid (TSS) of the influent and effluent from the VSBCW were carried out. Irrigation with water and diluted abattoir wastewater to examine the variation in plant growth rate was also investigated. The results revealed a pollution load reduction as the wastewater moves away from the discharge point but inadequate to meet the FEPA (1991) standard for wastewater discharge into rivers. The VSBCW was observed to reduce the concentration of BOD5, COD, EC, TDS and TSS in the abattoir wastewater by 88.71, 87.28, 45.72, 56.89 and 72.27 % respectively. The growth rate of the V. nigritana reduced by 1.9% when irrigated with abattoir wastewater. The study revealed that locally available V. nigritana in VSBCW is effective in abattoir wastewater treatment and could be use to curtail the pollution caused by discharge of untreated wastewater into rivers.     &nbsp

Chemical and Mechanical Properties of Reinforcing Steel Bars from Local Steel Plants

Steel bars are important engineering materials for structural application. In Nigeria, due to incessant building collapse occurrences, it is important to further investigate some of the mechanical and chemical properties of reinforcing steel bars produced from scrap metals in order to ascertain their compliance with the required standard. Three diameters (10, 12 and 16 mm) of the reinforcing steel bars were chosen from each of the eight steel plants (A–H). Chemical composition analyses and mechanical tests (yield strength, ultimate tensile strength and percentage elongation) were performed using optical emission spectrometer and Instron Satec Series 600DX universal testing machine, respectively. Hardness values of the samples were obtained by conversion of tensile strength based on existing correlation. The results showed that carbon contents, hardness values, yield and ultimate tensile strengths of some of the steel bars were found to be higher than the BS4449, NIS and ASTM A706 standards. The steel bar samples were also found to possess good ductility with samples from steel plants C and D. By observation, all the 12 mm steel bars from steel plants A to H met the required ASTM and BS4449 standards except samples from plant G. This study revealed that most of the investigated reinforcing steel bars have reasonable yield strength, ultimate tensile strength, ductility and hardness properties when compared with the relevant local and international standards. Therefore, they are suitable for structural applications where strength and ductility will be of paramount interest