| Author | Thet, Thet Nwe |
| Call Number | AIT Thesis no. AE-92-37 |
| Subject(s) | Lemnaceae
Ducks--Feeding and feeds
|
| Note | A thesis submitted in partial fulfillment of the requirements for
the degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | The general a:i m of the study was the development of the
feeding system of duck rearing by using protein-rich duckweed as
substitutes for concentrate feed. The study involved raising of
ducks receiving different levels of duckweed. More specifically ,
attention was also paid to invest:i.ga t e the growth of performance
and survival of ducks based on the duckweed substitution. The
subsidiary aim was to investigate the gowth performance and
survival of muscovy male and khaki campbell male ducks which were
usually reared for the purpose of meat consumption within the
s mall- scale farmers' level .
The experiment can be described as t wo parts. Th e first
included mal e starter ducks which were raised intensively in
cages for 3 weeks fed different levels of concentrate diet a nd
duckweed ad libitum. Growth of ducks, mortality and faecal
composition were recorded and compared between treatment levels
and species in order to know the effect of duckweed substitution
on starter stage of ducks.
The second part of the experiment was run for 8 weeks grower
period. In this part, the male grower duck were raised semi-intensively, allowed to scavenge free range during the day time
and fed village rice bran ad libitum as supplementary in the
evening after coming back to the shed from scavenging area. Body
weight, mortality and feed consumption were recorded, and
compared not only between treatment levels but also between
species in order to know how do the duckweed substitution of
starter stage affect on the grower stage of ducks.
An increase in the level of concentrate feed :is accompanied
by an increase in the growth of ducks in both muscovy and khaki
campbell. At the end of the experiment, survival of muscovy ducks
was unaffected until the level of concentrate feeding was reduced
to 40% of the ad 1ibitum level . At lower concentrate feeding
levels, survival of khaki campbell hybrid was particularly
affected . Complete mortality occurred :in both ducks when
concentrate feed was less than 20% of ad libitum levels.
Muscovy respond to duckweed substitution w:ith a higher rate
in growth, survival, carcass yields, feed conversion and disposal
of waste. The composition of feedstuffs given to the ducks affect
on the quality of manure. An increase in the level of concentrate
feed is accompanied by a n increase in the level of dry matter,
total nitrogen and total phosphorus. |
| Year | 1992 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| 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) | Little, David C. ;Upasena, Selawa H.
|
| Examination Committee(s) | Suthad Setboonsarng; |
| Scholarship Donor(s) | Japan; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1992 |
