UPV Theses and Dissertations
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Item The growth and yield performance of oyster mushroom (Pleurotus ostreatus Fries) using fish wastewater as fertilizerArroyo, Karen T. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2000-04)Oyster mushroom, Pleurotus ostreatus, is an edible wood-inhabiting fungi that continues to gain popularity in the Philippines, as well as in other tropical countries. With the use of modern technology, this mushroom can be grown in the Philippines, provided sufficient moisture is present. Its present cultivation is limited, perhaps due to insufficiency of planting materials and the limited knowledge about its culture. The main objective of the study was to establish the possibility of the replacement of urea, the commonly used fertilizer for mushroom cultivation by fish wastewater. The study also aimed to compare the effects of different concentrations of fish wastewater on the growth of mushrooms and determine which treatment produced the best results. A total of five groups were used: two control groups (positive and negative - using urea and water, respectively) and three experimental groups, the latter with different concentrations of fish wastewater serving as alternative fertilizer (A: 10%, B: 20%, C: 30%). Fruiting bags were inoculated with oyster mushroom spawn, and after a month of incubation, the growing mushrooms were assessed using the parameters of number, weight, length, and diameter. Results showed that the weight of oyster mushrooms was heaviest when the substrate was sprayed with plain water. However, the number of mushrooms harvested, their length, and the width of the pilei were not affected by spraying the substrate with urea or moistening these with up to 30% fish wastewater. The conclusions reached were: 1) when using sawdust as substrate for oyster mushroom cultivation, it is best to simply use water to maintain the moisture of the material; 2) sawdust used in combination with low concentration of fish wastewater (10%) can result in good production; 3) neither nitrogen nor urea may be a critical factor for the growth of oyster mushroom on sawdust; and 4) high amount of phosphorus and low potassium content of fish wastewater are favorable for oyster mushroom growth.Item Project EDI WAM!: Everybody Do It: War Against Malnutrition in Brgy. Roma, San Joaquin, IloiloBalogo, Philip G.; Bomediano, Maria Jonnah R.; Esparagoza, Marevi T.; Gallo, Czareena Anne; Mallari , Maria Katerina; Murillo, Gilbert Guy D.; Ortono, Jevi Marie P.; Oteda, Kristine Joy D.; Pameroyan, Nesly Joy G.; Radones, Charmaine Mae Keyien G.; Santocildes, Camille S.; Tirador, Anna Katharina L. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2015-05)The Millenium Development Goals for the Philippines by 2015 is to reduce the underweight-by-age prevalence to 17.2% among 0-5 years old children. So far in 2013, the prevalence decreased from 20.7% in 2003 to 19.9%. Western Visayas ranks second (26.0%) in the most malnourished regions in the country, with trends increasing in Iloilo from 25.1% in 2008 to 27.4% in 2013. According to the National Nutrition Council, this small change in number for the past 10 years makes it unlikely that the country will achieve its MDG. Project EDI WAM! Every body Do It: War Against Malnutrition in Barangay Roma, San Joaquin, Iloilo aims to decrease the prevalence of malnutrition by 70% among children aged 24 to 72 months. Operation Timbang showed that out of the 42 children, 11 were identified as malnourished, giving a prevalence of 26.19%. Project EDI WAM! aims to decrease the number of undernourished children through health education, feeding, and supplementation programs. A functional core group of 9 members was formed and was later transformed into a Barangay Health Board. Cooking lessons dubbed Pinoy Mother Chef improved the mothers' food preparation practices and behavior. Hygiene and Sanitation increased by 36.60%, while proper meal planning increased by 24.83%. Ready-to-Use therapeutic food (RUTF) was prepared and supplemented to the children. Knowledge of mothers on health and nutrition also increased by 35.54%. Out of the 11 malnourished children, 4 were turned to normal, giving a decrease of 36.36%. The 70% goals was not achieved and may be attributed to the short period of time that the project was implemented. However there is a significant increase in weight among all the recipients (2.79% ) and malnourished (4.92%). A Mothers’ Association was established to continue the project advocacy, making the cooking and feeding program an annual event.Item A novel water-in-oil-in-water emulsion to encapsulate antibacterial agentsBalcarcel, Angelica V. (Department of Chemistry, College of Arts and Sciences, University of the Philippines Visayas, 2018-06)Encapsulating bioactive compounds can protect them from adverse conditions. This study aimed to encapsulate bioactive agents in a stable multiple emulsion system using a material that can be recovered easily from a product abundant here in the country. Results of the study revealed that the method of encapsulation used is effective in encapsulating and releasing the bioactive compound encapsulated. The antibacterial activity determination showed that encapsulated chlorhexidine is effective against both S. aureus and E. coli bacteria. Further investigation was made by encapsulating aqueous guava (Psidium guajava) extract in the same emulsion system (water-in-oil- in-water) using recovered coconut milk protein (CMP) as a gelling agent. The evaluation of the stability of the emulsions revealed that the treatment with 40% guava extract in the aqueous phase of its primary emulsion (Emulsion 3) is the most stable among the other treatments. This treatment showed the smallest droplet size range and most uniformed droplet sizes. The creaming index of this treatment also showed the lowest values after three (3) weeks of storage. On the other hand, the treatment with 60% guava extract in the aqueous phase of its primary emulsion (Emulsion 4) appeared to be the most stable against heating. However, no antibacterial activity was observed for any of the emulsion systems both S. aureus and E. coli bacteria. Additional test revealed that the bioactive compound present in the plant extract was disrupted by the sonication processItem Molluscicidal effect of quicklime, CaO on golden snail (Pomacea canaliculata)Baibado, Joewel Tarra (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1998-03)The golden snail (Pomacea canaliculata) is presently a major pest of rice in lowland and rainfed areas through out the Philippines . The problem of golden snail infestation in rice farming system includes damage to the rice plants, rice yield losses, additional expense, side effects of chemicals and destructive effect on native snails . The study was conducted to evaluate the molluscicidal effect of calcium oxide for the control of golden snails in farmlands and to determine the 96hour LC50 in order to know the lethal concentration of calcium oxide to golden snails. Calcium oxide was found to have a molluscicidal activity on golden snails The golden snails were exposed to different concentrations namely. 100 ppm. 200 ppm. 300 ppm .400 ppm. and 500 ppm Remarkable lethal effects of calcium oxide (p<0.05) has been found in 4(H) and 500 ppm concentrations which has reached 60-100 % after the 96 hour treatment. The 96-hour LC50 within the 95% confidence interval was 322.02 ppm as computed Calcium oxide is safe on rice when used as a molluscicide It performs dual function as fertilizer/soil stabilizer and molluscide. These dual effects are very significant because it means big savings on the part of the rice farmers. Considering the prevalence of this pest, farmers spend much on molluscicides and their application. With calcium oxide, the farmer has a molluscicide and soil stabilizer in one application.Item The health status of school-age children in Barangay Ingore, La Paz, Iloilo CityAmamanglon, Keanne Paula H.; Bragancia, Ira May Joy E.; Gulmatico, Gideon M.; Guzman, Virgi Chrisbelle A.; Mercado, Pauline Victoria M.; Orbase, Jannina Faye O.; Reyes, Mary Camille E.; Yap, Maria Lorna Christy C. March (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2011-03)The study is a cross sectional survey to assess the health status of school-age children in barangay Ingore, La Paz, Iloilo City. The health status of the children was evaluated using nutritional status assessment, child care practices of mothers/caretakers and past and present clinical history of disease, and respiratory function. Anthropometry and Clinical Signs were used to directly assess the nutritional status of the children. An Interview Schedule, with mothers/caretakers as respondents was used to determine the socio-demographic characteristics of the household to where the children belong and also to obtain information on their child health care practices. Respiratory or Lung Function was assessed using Lung Peak Flow and Chest Expansion. The results of Anthropometry using the parameters for Weight-for-Age (WFA), Weight-for-Height (WFH) and Height-for-Age (HFA) revealed that 16.3% of the school-aged children were underweight; 10.7% were thin or wasted; 24.4% were stunted, and 4.0% were overweight/obese. The most common clinical signs indicative of malnutrition were pale conjunctiva and the occurrence of dental carries. Most of the children have been breastfed and availed of complete immunization during their pre-school age period. Almost half of them experienced childhood diseases like upper respiratory tract infections (e.g. cough, common colds, asthma, etc.). Peak flow analysis showed that among male, school-age children the average peak flow was 210.6L/minute while among female it was 195.7 L/minute. The computed average peak flow was 203.2 L/minute. The average chest expansion of the subjects was 2.4 cm and the chest expansion of male and female school-age children was 2.4 centimetres. The results obtained in this study can be used as a baseline for future studies especially in the light of the recent operation of a coal-fired power plant which might affect the health status of vulnerable age groups like pre-school and school-age childrenItem Salinity tolerance of the angelwing clam, Pholas orientalis larvaeAguaras, Lovie Grace P. (Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2011-03)Pholas orientalis, locally known as “diwal” is one of the commercially important bivalves in the Philippines due to its delicate and sweet taste. An experiment was conducted to determine the salinity tolerance of the 24-hour-old larvae of this clam when reared in different salinity levels of 25, 30, 35, and 40 ppt. The experiment lasted for 15 days at a rearing temperature of 25° C - 27° C. Determination of survival rates and water change were done twice every week. The data gathered were then analyzed using one-way ANOVA. Results showed that survival rates were significantly high at salinities of 30-35 ppt and were significantly low at salinity levels of 25 and 40 ppt. It was also observed that there was an increasing trend of mortality with prolonged exposure to different salinity levels. This could be attributed to the limited osmoregulatory capabilities of the larvae. When reared at low salinity levels, larvae were faced with the danger of too much water entry which eventually led to death. Meanwhile, when reared at high salinity levels, the larvae died due to outward movement of water which resulted to dehydration. Information on the salinity levels that could be tolerated by diwal larvae will be an important factor in the development of larval rearing techniques for successful hatchery operations. The juveniles or seeds produced in the hatchery could be used to restock the depleted resources in the wild.Item Determination of the concentration of essential minerals (Ca, Fe, K, Mg, Na, Zn) in honey samples from Negros OccidentalArellano, Lory Mae F. (Department of Chemistry, College of Arts and Sciences, University of the Philippines Visayas, 2018-06)Honey is a natural, sweet and highly nutritional substance produced by bees through a series of nectar collection and chemical processes. Due to the popularity of the product, certain regions in the Philippines has been producing honey and recently, different apiaries from Negros Occidental has been producing its own share of popular product in the market. The products are well received by the consumers, but the problem is the lack of characterization which gives the product doubtful and unconfirmed nutritional value. This study focuses on the quantification of essential minerals (Ca, Fe, K, Mg, Na, Zn) present in local honey samples from Negros Occidental. Eight honey samples were obtained from the different apiaries including an external sample from Mindoro. Samples were acid digested using HNO3/H2O2 solution at 130 °C. The concentration of each minerals in the honey samples were analyzed using AAS. The data reported high concentration (5.71 to 93.20 ppm) of K on most of the samples. The second most abundant mineral in the local honey is Ca ranging from 13.67 to 45.88 ppm. The Mg concentration ranges from 1.19 to 4.09 ppm while Na is in between 0.82 to 3.14 ppm. The mineral Zn and Fe contained the lowest concentration in most of the samples with Zn at 0.46 to 0.86 ppm and Fe at 0.04 to 0.30 ppm.Item An estimation of the supply of cattle in the livestock auction market in Leon, IloiloAndrada, Clyde (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 1991-05)This study was an economic analysis of the supply of cattle by the direct cattle producers in Leon Livestock Auction Market in Leon, Iloilo in 1989. The study includes the estimation of the supply function, the identification of the significant factors affecting the supply and the analysis of the price elasticity. The supply function of cattle were hypothesized to be affected by four (4) factors, namely: price of cattle (X1) value of inputs used in cattle production (Xz), price of related commodities (X3) and the availability of credit (X4). Simple Random Sampling was used in choosing the thirty (30) respondents who, were direct cattle producers who sold their cattle in Leon Livestock Auction Market in 1989. These cattle producers were interviewed with the use of an interview schedule. The data gathered includes total weight and number of cattle supplied in the market by the producers and the prices of resource inputs used in the cattle production. Other data such as the price of cattle per kilogram liveweight were taken from the records of the Bureau of Agricultural Statistics. Regression Analysis was applied to determine the coefficients of the supply function. Specifically, stepwise regression analysis was used. Results of the study showed that the estimated supply function of cattle was Qs = — 1843.4461 + 96.6056 X1, where x; is the average price of cattle per kilogram liveweight. Thus, the only significant factor affecting the supply of cattle was the variable X1. The price elasticity supply is 4.6984. The supply of cattle is therefore price elastic because the percentage change in cattle supplied is greater than the percentage change in price.Item Indigenous knowledge, beliefs, and practices in rice farming of people in Cuyo Island, PalawanAcero, Agnes B.; Prado, Edelyn A. (Division of Social Scviences, College of Arts and Sciences, University of the Philippines Visayas, 2005-03)This study was conducted to determine the indigenous knowledge, beliefs, and practices in rice farming of people in Cuyo Island, Palawan. It also aims to find out the indigenous knowledge, beliefs and practices in planting, harvesting, storing, processing, and selling rice products. Both primary and secondary data are used in this study. Data collection was done using interview schedule. Two sets of respondents were interviewed to collect data - the farmers and some key informants such as the barangay captains, and the oldest people of the two (2) barangays. The study was conducted in the barangays of the Municipality of Magsaysay, Cuyo Island, Palawan. These barangays are Igabas, Emilod, and Balaguen. Data were analyzed using descriptive statistics. Results of the study show that Cuyunon farmers have many existing traditional practices related to planting, harvesting, storing, processing, and selling rice products. It also shows that Cuyunons practice traditional farming in the same way that upland rice farmers in some parts of the Philippines do. Based on the results the researchers recommend that the following aspects about the Cuyunon farmers should also be studied: (1) existing development programs implemented by the Government Agencies, and NGOs related to rice farming in the locality; (2) assessments of farmers attitude towards these programs; (3) accessibility of the technology introduced by these agencies; and (4) feasibility of establishment of a people’s organization among the farmers.Item Documentation of food handling practices in relation to health conditions of children aging 0 to 6 years old in Barangay Lanag Sur, Tubungan, IloiloArcolas, Kezia Lois; Belleza, Noel Francis; De Leon, Mary Antonette; Lebin, Ma. Angeli; Nisorrada, Jea Rochelle; Silva, Alyssa Joy; Rafols, Sofia Aprille Grace (Division of Social Sciences, College of Arts and Sciences, University of the Philippines Visayas, 2012-04)Improper home food handling preparation and consumption practices by consumers, inadequate hygiene practices, consumption of raw and unsafe food, as well as cross contamination by raw food are some factors and practices that have been implicated in food borne outbreaks in the home (Taulo et al., 2006). A survey was conducted to 27 households with children aged 0-6 years old from Barangay Lanag Sur, Tubungan, Iloilo. Of the 27 respondents, majority belong to the 30- 39(46.15%) age group, are housewives(65.38%) who were also in charge of preparing the food(53.8%), with monthly income ranging from 0-4999 pesos(57.69%). Among the respondents, six of them were randomly taken for sources of food sample which was tested for physical and microbial examination. Based on the survey, food preparation practices of households in the barangay is composed of washing, cutting, rewashing, boiling to cook/sterilize (for infant formulas), and cooling to room temperature. Majority of the respondents consume right kind of foods essential for nutritional use and use untreated spring water for its preparation. Food samples taken have pH values ranging from 6.15 to 6.975. The test for coliform indicated that two out of six households were positive for presence of coliform. Among the common illnesses of children recorded, 96% have had a history of acute respiratory infections and 84% have had episodes of gastrointestinal illness. Food handling practice in the community is simple and not capable of eliminating pathogenic substances like coliform bacteria totally.