Nutritive value of composted water hyacinth in pelleted feed for tilapia | |
| Author | Sommai Chiayvareesajja |
| Call Number | AIT Thesis no.AE-84-19 |
| Subject(s) | Tilapia Hyacinths |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources & Development |
| Publisher | Asian Institute of Technology |
| Abstract | Composted water hyacinth, rice bran and cassava were used as ingredients in fish diets to determine the nutritive value of composted water hyacinth and the possibility of using composted water hyacinth to replace fish Meal. There were 8 dietary treatments, 5 diets varying in the content of fish meal and composted water hyacinth, conducted in recirculating water to eliminate fish growth due to phytoplankton, 2 diets conducted in static water to determine fish growth due to pelleted feed and residual fertilizing effects, and one treatment without feeding as a control. All dietary treatments were conducted in duplicated. During the 84 day trial period, fish growth (mean body weight, daily weight gain, & weight gain and specific growth rate), feed utilization (food conversion ratio, protein efficiency ratio, apparent net protein utilization and apparent protein digestibility), chemical composition of experimental diets, fish body and water quality (dissolved oxygen, pH, ammonia, alkalinity, water temperature and chlorophyll a ) were studied. On the basis of daily weight gain, food conversion ratio, protein efficiency ratio and apparent net protein utilization, tilapia growth was not significantly different (p<0.05) among the fish fed on diets containing 0 25% CW so it was possible to replace fish meal with composted water hyacinth up to 50% (diet containing 25% fish meal, 25% composted water hyacinth, 30% rice bran and 20% cassava) and still obtain comparable growth to the diet containing 0% composted water hyacinth. |
| Year | 1984 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Edwards, Peter; |
| Examination Committee(s) | Wee, Kok Leong ;Colman, John.A; |
| Scholarship Donor(s) | Kubota; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1984 |