Now showing items 1-4 of 4

    • Article

      Growth and survival of Penaeus monodon postlarvae fed shrimp head meal and fish meal as primary animal sources of protein 

      F Piedad-Pascual & WH Destajo - Fisheries Research Journal of the Philippines, 1979 - Fisheries Research Society of the Philippines
      Penaeus monodon postlarvae with mean weights of 2 to 3 g were fed shrimp head meal (Diet B), fish meal (Diet C), mussel (Diet E), a combination of equal amounts of shrimp head meal and fish meal (Diet A) or one part shrimp head meal and 2 parts fish meal (Diet D) as primary sources of protein. The larvae were reared for 30 days in cylindrical fiberglass tanks containing 150 l of aerated seawater. Mean weight gains were significantly highest among those fed combinations ofish meal and shrimp head meal. Diets A and D, 0.88 g and 0.59 g, respectively. Mean weight gains among those fed one main source of protein, Diets B, C and E were not significantly different from each other and were very low. Highest survival rate was observed among hose fed Diet C (85%) and the lowest recorded (45%) was obtained from those fed mussel. Those fed Diet B grew the slowest and had the lowest survival rate of the groups given formulated diets. Shrimp head meal and fish meal complement each other in the diet formulations. Shrimp head meal alone does not provide for growth and survival, but fish meal can provide for high survival rate. The addition of shrimp head improves the diet. Cholesterol which is present in shrimp could have caused the difference.
    • Article

      Polymethylolcarbamide as binder of prawn diets 

      F Piedad-Pascual - Fisheries Research Journal of the Philippines, 1990 - Fisheries Research Society of the Philippines
      The binding effect of polymethylolcarbamide (PMC) at the levels 0.5% and 1.0% of a practical diet was compared to that of the other binders such as kappa-carrageenan, sodium alginate, carboxymethylcellulose, cornstarch and agar. PMC was found more effective at 0.5% and 1.0% levels as a binder for the formulated practical diet than the other binders used. However, PMC was found ineffective at the same levels, even at 2%, when employed in the semi-purified diet.
    • Conference paper

      Status of shrimp nutrition and feed development in Southeast Asia. 

      F Piedad-Pascual - In S De Silva (Ed.), Fish Nutrition Research in Asia. Proceedings of the Third Asian Fish Nutrition Network Meeting, 6-10 June 1988, Bangkok, Thailand, 1989 - Asian Fisheries Society. AFS Spec. Publ. 4
      World demand for shrimp has increased significantly in the last decade. Of the 32 species investigated, the most commonly cultured in Southeast Asia is the Penaeus monodon . Formulated feed constituted around 50% of the operational costs in shrimp culture and hence there is a need to develop low, cost effective feeds. However, due to limited information on feeding habits and nutritional requirements, development of feeds for P. monodon has been mainly dependent on data derived from other penaeid species.

      Studies on P. monodon nutrition and feed development and constraints to shrimp culture common to the Southeast Asian region are reviewed. Standardization of methodologies for nutrition research and husbandry to hasten collection of data is recommended.
    • Article

      Survival and some histological changes in Penaeus monodon Fabricius juveniles fed various carbohydrates 

      F Piedad-Pascual, RM Coloso & CT Tamse - Aquaculture, 1983 - Elsevier
      Juveniles of P. monodon Fabricius (initial mean weight 1.76 g) were reared on semipurified diets containing 10 or 40% maltose, sucrose, dextrin, molasses, cassava starch, corn starch or sago palm starch for 6 weeks. Highest survival (56%) was obtained in juveniles fed with a diet containing 10% sucrose. Within 10 days of rearing, complete mortality was observed in prawns fed with higher levels of maltose and molasses. After 6 weeks, among the starches, sago palm starch provided for the best survival at 10% level. There was no relationship between time to death and size of the prawn (r = −0.10). Significant differences were observed between the type, as well as the level, of carbohydrate in the diet on the survival of juvenile prawn. Histopathological changes in the hepatopancreas, gills and exoskeleton of juveniles fed with the various carbohydrates were also studied.