AQD Journal Articles: Recent submissions
Ipinapakita ngayon ang mga item 801-820 ng 1249
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Improvised filter unit for agar extraction/filtration
(San Carlos Publications, University of San Carlos, 1993)Agar is a high-priced phycocolloid usually extracted from red seaweeds (Rhodophyta). It has many uses in the food and pharmaceutical industry (Chapman 1970, Armisen and Galatas 1987). Worldwide production of agar has reached ... -
Evaluation of agar from three species of Gracilaria from Panay and Guimaras islands
(San Carlos Publications, University of San Carlos, 1993)Agar from three species of Gracilaria, G. changii G. coronopifolia, and Gracilariopsis heteroclada, collected form Panay and Guimaras islands was evaluated. Each species was pretreated with NaOH solution before extraction. ... -
Effects of gel depth and gel surface area on agar gel strength
(San Carlos Publications, University of San Carlos, 1993)Agar is a high priced phycocolloid extracted from red seaweeds (Rhodophyta) called agarophytes. It is a mixture of polysaccharides whose basic monomer is galactose (Armisen and Galatas 1987). Agar has many uses in the food ... -
Effects of long-term exposure to a mixture of cadmium, zinc, and inorganic mercury on two strains of tilapia Oreochromis niloticus (L.)
(Springer Verlag, 1993)Tilapia are an economically important group of fish. They have a short generation period of 3-6 months, and exhibit successive breeding. In addition, their fast growth, herbivorous or omnivorous feeding habits, high food ... -
Effect of rotenone and saponin on the shell quality of juvenile tiger shrimp, Penaeus monodon
(Society of Israeli Aquaculture and Marine Biotechnology, 1993)Tiger shrimp (Penaeus monodon) juveniles were exposed to varying concentrations of rotenone and saponin to determine their effects on survival and shell quality. The highest concentrations tested, 50 ppm rotenone and 100 ... -
Assimilation of aquatic macrophytes in Penaeus monodon
(Taylor & Francis, 1993)The macrophytes Najas graminea and Ruppia maritima are common aquatic plants found in brackishwater ponds in the Philippines. The assimilation efficiencies of these plants by male and female Penaeus monodon (30-40 g wet ... -
Requirements of juvenile milkfish (Chanos chanos Forsskal) for essential amino acids
(American Society for Nutrition, 1993)The dietary requirements of juvenile milkfish (Chanos chanos Forsskal) for essential amino acids were determined in a series of experiments. The fish (< or = 8.0 g) were reared in fiber glass tanks provided with flow-through ... -
Production of Penaeus monodon (Fabricius) using four natural food types in an extensive system
(Elsevier, 1993)Growth, survival, and production of P. monodon feeding on four types of natural food, i.e., lablab (benthic mat of cyanobacteria, diatoms, and associated fauna), Ruppia maritima, lumut (filamentous green algae and attached ... -
Sulphide tolerance and adaptation in the California killifish, Fundulus parvipinnis, a salt marsh resident
(Wiley-Blackwell, 1993)Hydrogen sulphide is a toxicant naturally produced in hypoxic marine sediments, hydrocarbon and brine seeps and hydrothermal vents. The California killifish, a salt marsh resident, is remarkably tolerant of sulphide. The ... -
Thyroxine injection of female rabbitfish (Siganus guttatus) broodstock: changes in thyroid hormone levels in plasma, eggs, and yolk-sac larvae, and its effect on larval growth and survival
(Elsevier, 1993)The thyroid hormone levels in female rabbitfish, Siganus guttatus, plasma, eggs, and yolk-sac larvae were measured before and after thyroxine (T4) injection in female spawners at doses of 1, 10, and 100 μg ... -
Responses of a non-migratory stock of brown trout, Salmo trutta, to ovine growth hormone treatment and seawater exposure
(Elsevier, 1993)The ability of ovine growth hormone (oGH) to enhance the hypo-osmoregulatory performance of a non-migratory stock of the brown trout (Salmo trutta) was investigated. Three groups of juvenile fish were intraperitoneally ... -
Growth and survival of Penaeus monodon juveniles fed a diet lacking vitamin supplements in a modified extensive culture system
(Elsevier, 1992)Penaeus monodon juveniles with mean initial weight from 0.11 to 0.17 g were fed diets with and without vitamin supplement. The diets contained 34% protein and 8% fat. The animals were stocked at 5/m2 in ... -
Egg cannibalism by milkfish (Chanos chanos Forsskal) spawners in circular floating net cages
(Blackwell Publishing, 1992)Egg cannibalism by milkfish spawners in a circular floating net cage was investigated. The cage was lined with a fine mesh hapa net to retain spawned eggs and to prevent the entry of fish egg predators. Water samples were ... -
Withdrawal of exogenous 17-alpha methyltestosterone causes reversal of sex-inversed male grouper Epinephelus suillus (Valenciennes)
(San Carlos Publications, 1992)The protogynous hermaphrodite groupers Epinephelus suillus were given bi-weekly injections of 17 alpha-methyltestosterone (MT) intramuscularly for three to six months. Spermatogenesis occurred after three months of MT ... -
Induction of oocyte maturation and ovulation in the freshwater Asian catfish, Clarias macrocephalus by LHRHa and pimozide
(Blackwell Publishing, 1992)Three experiments were conducted to determine the effects of a simultaneous injection of varying doses of luteinizing hormone-releasing hormone analogue (LHRHa; 0.005–0.10 μg)/body weight (BW) in combination with a fixed ... -
Chicken manure, rice hulls, and sugar-mill wastes as potential organic fertilizers in shrimp (Penaeus monodon Fabricius) ponds
(Elsevier, 1992)Shrimp (Penaeus monodon Fabricius) were cultured (3000 juveniles/ha) in 50-m2 earthen ponds fertilized with composted agricultural and industrial wastes at a basal application rate of 2 ton/ha. The following ... -
Cysteine concentration regulates cysteine metabolism to glutathione, sulfate and taurine in rat hepatocytes
(American Society for Nutrition, 1992)The effect of cysteine concentration and cysteine source [cysteine, methionine or 2-oxo-thiazolidine-4-carboxylate (OTC)] on the metabolism of [35S]cysteine was studied in isolated rat hepatocytes. Production of each of ... -
Acceptability of territorial use rights in fisheries: towards community-based management of small-scale fisheries in the Philippines
(Elsevier, 1992)The granting of territorial use rights in fisheries (TURFs) to fisherfolk associations, similar to that practiced in Japan, is recommended as a management tool for small-scale fisheries in the Philippines. This study, ... -
A survey of small-scale fishermen's credit practices in Panay, Philippines
(University of San Carlos Publications, 1992)In the Philippines, small-scale fishermen have traditionally relied on informal lenders in view of the limitations of self-finance and the lack of access to bank credit. An assessment of credit practices and its availability ... -
Genotype environment interaction in the response of three strains of Nile tilapia to poor nutrition
(Elsevier, 1992)Experiments were conducted to determine the effects of poor nutrition on the growth of three Oreochromis niloticus strains fed protein-deficient diets. Four-week-old fry from the three "test" strains were paired with a ...
