Research reports
https://hdl.handle.net/20.500.12852/757
2024-03-29T04:37:07ZProximate analysis and palatability of different probable locally available alternative feedstuffs for darag native chicken growers
https://hdl.handle.net/20.500.12852/1716
Proximate analysis and palatability of different probable locally available alternative feedstuffs for darag native chicken growers
Cabarles, Jaime C. Jr.
The study was conducted to establish the baseline on the proximate analysis, palatability and probability of different locally available feedstuffs as alternative feeds for Darag native chicken growers. Proximate analysis revealed that feedstuffs made of leaf meals had higher crude protein, fiber, and ash however; these had lower nitrogen free extract, and moisture. On the other hand, the root meals had lower crude protein, crude fat, fiber, and ash but had higher nitrogen free extract. Banana fruit meal had the highest moisture content. Bread crumbs was the most palatable alternative feedstuff. Chicken fed with leaf meal are likely to produce higher crude protein in dung.
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2008-05-01T00:00:00ZA vacuum fryer for "greenshell" mussels meat
https://hdl.handle.net/20.500.12852/1706
A vacuum fryer for "greenshell" mussels meat
Belonio, Alexis T.
The Appropriate Technology Center of the Department of Agricultural Engineering, College of Agriculture, Central Philippine University, Iloilo City, in collaboration with the Assosasyon sang Magagagmay nga Mangingisda sang Roxas City (AMMARO), had carried out a design and evaluation of a vacuum fryer for frying “greenshell” mussels meat. The project was carried out from May 15, 2002 to November 29, 2002.
The machine has a frying chamber having a diameter of 0.60 m and a height of 1.2 meter. This chamber is made of 1/8-in. thick stainless steel plate to prevent salt corrosion. The lower portion of this chamber is enveloped by another cylinder with a diameter of 0.8 m and a height of 0.7 m which serves as the heating chamber for the fryer. Inlet and outlet pipes are provided for both chambers for loading and unloading of oil. An exhaust pipe is also provided for the heating chamber to automatically release any pressure developed in the chamber during operation. An LPG burner is utilized to heat the oil. It is placed directly beneath the heating chamber to supply the heat needed for frying. Two vacuum tanks were used to generate the required vacuum pressure for the frying chamber. These tanks create vacuum while the water is transferred from one tank to the other.
Performance evaluation showed that the machine uses 160 liters of frying oil and 60 liters of heating oil. A vacuum pressure of up to 15-in. Hg can be generated by the system within 5 minutes. The temperature of the frying oil can be elevated to a level of 130 within 2 hours of continuous firing using the LPG burner. One to two kilos of “greenshell” mussels meat can be satisfactorily fried within 5 to 6 minutes. The products produced are crispy and less oily. Frying recovery of the product averaged at 32%. Electrical power and fuel consumption averaged at 1.27 kW and 1.06 kg per load, respectively.
The initial investment required for the vacuum fryer is P205,000.00. The computed cost of producing vacuum fried green shells meat is P129.96 per kilogram. Assuming a P150.00 cost per sack of “greenshell” mussels, a recovery of 8 kilos of “greenshell” mussels meat per sack, a frying capacity of 15.36 kg/day, and a selling price of P700.00 per kilo of the vacuum-fried product, the total net income that can be derived from the operation is P508,253.18 per year. The return on investment is 247.9% while the benefit cost ratio is 4.27. The computed payback period is 0.40 year.
Research report
2002-01-01T00:00:00ZDesign and evaluation of a deep water pumping wind pump for drip irrigation at Mindanao State University, General Santos City
https://hdl.handle.net/20.500.12852/1354
Design and evaluation of a deep water pumping wind pump for drip irrigation at Mindanao State University, General Santos City
Belonio, Alexis T.; Bustamante, Hayde P.
A deep water pumping windpump was designed and evaluated for drip irrigation at the Demonstration Area of the College of Agriculture, Mindanao State University, Fatima General Santos City (MSU-GSC). The design development of the windpump was done at the Appropriate Technology Center, Department of Agricultural Engineering, Central Philippine University (ATC-DAE-CPU), Iloilo City during the month of February 2001. Fabrication of the head assembly was done at Dennis Metal Craft, Jaro, Iloilo City during the month of March 2001. Construction and installation of various components of the windpump including the drip irrigation system was carried out at the MSU-GSC from April 1, 2001 to January 31, 2002.
The windpump has a rotor diameter of 4.39 m with 24 arch steel blades and a four-legged truss-type tower with a height of 9.14 m. The rotational motion of the rotor is converted by a crank-type transmission system to a reciprocating motion of a 1-1/4-in diameter deep well pump installed 40.24 m below the ground surface. The length of stroke was 0.20 m with an average stroke obtained during the test of 36.72 strokes per min. The water source was at a depth of 59.45 m using a 6-in. diameter steel pipe casing.
Performance testing and evaluation employing 16 runs, revealed that at the average wind speed of 3.88 m/s, a flow of 256.37 mL/s and hydraulic power of 43.16 W were obtained. It was observed that the wind flow and the hydraulic power continue to increase to 380.00 mL/s and 113 W at a wind velocity of 12.73 m/s. However, it started to decrease to 323.63 mL/s and 96.65 W at a wind speed of 12.84 m/s.
Wind velocity was observed to effect on wind power. At a wind velocity of 3.88 m/s, the wind power was 442.05 W. It increased to 16,032.91 W at the highest wind speed of 12.8 m/s.
It was also noted that the overall system efficiency decreased as the wind velocity increased. Its value ranged from 0.60% to 12.91%.
During the months of November 2001, December 2001, and January 2002 the mean depth of rainfall, evaporation rate, and wind velocity at the area where windpump and drip irrigation system were installed were 6.82, 1.74, and 1.80 mm per day, 3.49, 3.67, and 4.62 mm/day, and 2.44, 2.22, and 3.30 m/s, respectively.
Of the three different kinds of drip lines used for windpump, the pressure compensating dripper was observed to perform well. This can be attributed to its very low pressure operating characteristics.
The cost of operating the system, both for the windpump as well as the drip irrigation system, is relatively high due to low pumping output as a result of low wind stream in the area.
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2002-09-01T00:00:00ZA comparative study on the effectiveness of nature farming and conventional farming technologies on the growth and yield of Dapit-saka rice selection
https://hdl.handle.net/20.500.12852/1350
A comparative study on the effectiveness of nature farming and conventional farming technologies on the growth and yield of Dapit-saka rice selection
Patricio, Hope G.; Seredrica, Ma. Victoria C.
Insects found feeding on rice at the early stage, that is, at three weeks after transplanting (WAT) were the rice whorl maggots (Hydrillia philippina), white leafhoppers (Cofana spectra), green leafhoppers (Nephotettix virescens), rice stemborers (Scirpophaga innotata) and grasshoppers (Oxya hyla intricata). Natural enemies observed included a mirid bug (Cytorhinus lividipennis), orange lady beetle (Micraspis crocea), damselfly (Agriocnemis spp.), and spiders (Lynx spiders, Oxyopes spp. ; dwarf spider, Atypena formosana; Orb spider, Argiope catenulate; and long-jawed spider, Tetragnatha maxillosa). It was noted that the use of nature farming technology and the absence of pesticides in the control had attracted more spiders. However, plants grown in conventional farming technology were significantly taller and had the most number of tillers both at maximum vegetative and productive stages. These favorably increased the population of white leafhoppers which likewise favored the surge of insect predators. As the number of insect pests increased on the sixth WAT, a number of species of the natural enemies also increased with the addition of vespid wasps and ground beetle (Ophionea nigrofasciata). The heaviest panicles were produced by plants applied with chemical inputs. These resulted in the highest grain yield of 3,466 kg/ha, a net income of P19,643.00 and an ROI of 130.80% . These values exceeded those of plants in the nature farm technology by 1,641 kg/ha, P14, 737.65, and 94.05 %, respectively.
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2004-09-01T00:00:00Z