| Author | Gouthaman, Gopalan |
| Call Number | AIT Thesis no. AE-90-31 |
| Subject(s) | Fishes--Feeding and feeds
|
| Note | A thesis submitted in partial fulfillment requirements for the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | An experiment was conducted for a period of 64 days to
de t ermine the efficacy of macrophytes
pa r ag r ass, rice and water spinach)
gonionotus in an unfertilized system.
tested on cassava a nd water spinach . as t he control .
(cassava , duckweed, chopped
fed ad li bi t um t o Puntius
The effect of c hopping was
Commercial pellet was used
The feed intake /da y on a dry weight basis was negative l y
related t o the fib re a nd positively relate d to t he protein
content of the feed. But protein and fibre contents di d not fully
explain the difference in intake of different feeds. Protein
intake (dry weight basis) was positively related to the feed
intake (dry weight basis ) . Growth ex pressed as we ight gain (g), %
weight gain , da ily weight gain (g) and relative growth rate ( g/kg
fish/ day ) showed a positive relationship with protein intake. The
lower total dirge stability in relation to hi her protein
digestibility and lack of correlations between . growth and food
conversion ratio , protein efficiency ratio and protein conversion
efficiency showed that most of calculated non-protein energy was
unavailable in all fee ds except for pellet , hence protein was an
important energy source. Duckweed with higher protein was fed
more and resulted in better growth . The paragrass and rice with
the lowest protein content were fed less and resulted in poor
growth. The growth parameters for all other feeds lay in between
and overlapped .
An experiment on the feeding rate of small fish of size 2.8-
4 . 5 cm showed they were able to feed on water spinach leaves a nd
Lemna . But a growth trial is needed t o study t he feeding value of
these macrophytes f or these smaller silver barb. |
| Year | 1990 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Edwards, Peter ;Yakupitiyage, Amararatne |
| Examination Committee(s) | Little, David C. |
| Scholarship Donor(s) | The Royal Thai Government |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1990 |