000			04165cas a2200421 a 4500
005			20260817163717.0
008			110920s1989 th uu|m rtt 0| a1eng d
035			_a.b10071611
099		9	_aAIT Thesis no. AE-89-34
100	1		_aThomas, John
245	1	3	_aAn assessment of the use of rice bran as a fish feed in four areas of Udonthani province in the northeast Thailand
260			_aBangkok : _bAsian Institute of Technology, _c1989
300			_a70, [48] p.
490	1		_aThesis ; _vno. AE-89-34
500			_aA thesis Submitted in partial fulfilment of the requirements £or the degree of Master o f Science, School of Environment, Resources and Development
502			_aThesis (M.Sc.) - Asian Institute of Technology, 1989
520			_aAn assessment of the use of rice bran as a fish feed was carried out in four areas in Udon Thani province of the North east Thailand, representi11g four agro-ecological zones in the region. The study included a survey of fisl1 farming population in The selected areas to assess t.li e use of rice bran as a fish feed; evaluation of rice .bran samples collected from the field in terms o f the quality; a storage study to evaluate l be quality changes of rice bran on storage and a case study of two villages to study The dynamics of rice bran marketing in the villages. Average area of a fish pond was found to be 1 .16 ha , yielding on an average 1 5 O O Kg/ha of which 20 . 1 per cent was us e d for home consumption. The survey confirmed The earlier observation s l hat rice bran was the most commonly used fish feed being used by 65 % of the fanners. Farmer ' s awareness of the locally available feed stuffs was a1so observed. The common fish pond inputs were vegetables, termites, duck weed, ipomea and cassava leaf. Differences in fish pond inputs used , reflected local availability and agricultural practices of Ll1e area. 77 % of the farmers were found to use less than 1 Kg of rice bran and 44 % of the farmers were found to feed rice bran once every day. Limited availability of rice bran was reported to be the reason for confining the use of rice bran . The low fish yie1d is attributed to the low usage of feed inputs of which rice bran is a major constituent. A clear difference in the proximate composition was observed between the rough, smooth and mixed rice bran available to the farmers. A rapid increase in free fatly acid was observed on storage, indicating development of rancidity which was a major reason restricting the storage of rice bran . Case study of marketing of rice bran revealed that the existing marketing system, was geared to the needs of the village , but the pig and the duck subsystems were found l o be the major consumers of rice bran, leaving the fish subsystems at a disadvantage Seasonal differences in price and availabi1ity was observed depending on the farming activities ln the village.
650		0	_aRice bran
650		0	_aFishes _zThailand _zUdon Thani _xFeeding and feeds
700	1		_aLittle, David C., _eChairperson
700	1		_aEdwards, Peter, _eExamination Committee
700	1		_aDemaine, Harvey, _eExamination Committee
710	2		_aGovernment of Australia., _eScholarship Donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. AE-89-34
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B17885
907			_a.b10071611 _bmnait _cs
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