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008			090709s2008 th uu|m rtt 0| a1eng d
035			_a.b12063988
099		9	_aAIT Thesis no.AQ-08-18
100	0		_aOng Moc Quy
245	1	0	_aEvaluation of potential for water hyacinth leaf protein concentrate as a protein source in tilapia feeds : _ba case study in Pak-Phanang Southern Thailand
260			_aPathum Thani, Thailand : _bAsian Institute of Technology, _c2008
300			_a66 leaves : _bill.
490	1		_aThesis ; _vno. AQ-08-18
500			_aA thesis submitted in partial fulfillment of the requirem ents for the degree of Master of Science in Aquaculture and Aquatic Resourc es Management, School of Environment, Resources and Development
502			_aThesis (M.Sc.) - Asian Institute of Technology, 2008
520			_aLeaf protein concentrate extracted from water hyacinth (WH -LPC) was regarded as potential plant protein to supplement in tilapia feed through tw o trials. In trial 1, WH-LPC was extracted by acid and heat coagulated method at acidifi cation at pH lower than 4.0, thermal precipitation at 50 0 C and rinsing with water. The WH-LPC obtained was evaluate d for conversion rate as well as gross composition. In trial 2, to determine alternative level of WH-LPC to soybean in formulated feed for tilapia cage culture. There were seven treatments that included commercial feed and six replacing level of WH-LPC 0%, 5%, 10%, 15%, 20% and 25% crude protein in formulated feed containing 3 0 % crude protein. Nile tilapias ( Oreochromis niloticus ) (average weight 8.0 g) were stocked at 30 fish per cage. The trials were designed by randomized complete block de sign. The result of trial 1 shown that LPC and protein yields obtaine d 0.047g dry matter and 0.017g crude protein 100 g -1 fresh water hyacinth biomass, respectively or 0.43 g dry matter and 0.15 g crude protein 100 g -1 fresh leaf water hyacinth respectively. In addition, proximate compositions of WH-LPC were analyzed at 35.99% crude prot ein, 1.49% crude lipid, 8.89% ash and 12.69 % crude fiber. The result of trial 2 presented that WH-LPC could completel y substitute soybean meal in tilapia formulated feed and replacing level of WH-LPC up to 15% crude protein that could give better growth performance, survival rate and efficienc y of protein of Nile tilapia. However, fish fed diets containing most of plant protein wer e less growth performance, efficiency of feed utilization and economic efficiency tha n fish fed commercial feed (P<0.05). In summary, using WH-LPC as protein sources in tilapia feed was remarked to be uneconomical efficiency, but it contributed a greatly role in i mproving environment, supplying protein sources and creating new jobs to improve livelihood for local people.
650		0	_aWater hyacinth as feed
650		0	_aTilapia _xFeeding and feeds
700	1		_aYakupitiyage, Amararatne, _eChairperson
700	0		_aSomsak Boromthanarat, _eExamination Committee
700	1		_aGallardo, Wenresti G., _eExamination Committee
700	1		_aBhujel, Ram Chandra, _eExamination committee
710	2		_aSwedish International Development Agency (Sida), _eScholarship donor
810	2		_aAsian Institute of Technology. _tThesis ; _vno. AQ-08-18
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B01764
907			_a.b12063988 _bmnait _cu
902			_a240329
998			_b0 _c090709 _dm _ea _fu _g0
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945			_lmnarc
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942			_c40
909			_aBarcode : 30050120697213 _bCREATED : 2013-06-09 _cRECORD # : i1274069x _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 1 _iTOT CHKOUT : 0 _jTOT RENEW : 0
909			_aBarcode : 30050120358576 _bCREATED : 2016-08-06 _cRECORD # : i13026045 _dLPATRON : 0 _eLCHKIN : - _f# RENEWALS : 0 _g# OVERDUE : 0 _hIUSE3 : 0 _iTOT CHKOUT : 0 _jTOT RENEW : 0
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