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008 121014s2010 th ad ||| 000 0 eng d
035 _a.b12143108
099 9 _aAIT Thesis no.AQ-10-02
100 0 _aTran Le Cam Tu
245 1 2 _aA comparative study of energy partioning of Tra Catfish (Pangasius hypophthalmus) fed farm-made feed and commercial feed
260 _aPathum Thani, Thailand :
_bAsian Institute of Technology,
_c2010
300 _a1 online resource (43 leaves) :
_bill., charts
490 1 _aThesis ;
_vno. AQ-10-02
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Aquaculture and Aquatic Resources Management, School of Environment, Resources and Development
502 _aThesis (M.Sc.) - Asian Institute of Technology, 2010
520 _aThis research was conducted to evaluate the energy budget (C, P, F, R, and U) of juvenile (20g) Tra catfish (Pangasius hypophthalmus) fed with two different dietary treatments i.e. moist farm-made feed (FMF) and dry commercial feed (Pellet). There were three different experiments conducted at 30o C. First, a growth experiment was conducted for 50 days, using 288 fish randomly placed in the eight 500L tanks. Fish were fed two times per day and the parameters such as energy intake (C), nitrogen intake (CN), recovered energy (P), and retained nitrogen (PN) were gathered. Second, digestibility experiment using 192 fish placed in eight 170L fecal settlement tanks. Fish were fed with the same feeds but added 1% chromic oxide. Fish were fed until satiation one time per day for seven days. Faecal samples were collected for three consecutive days and pooled. Experimental feeds and feces were analyzed for chromic oxide, gross energy and crude protein. Third, the oxygen consumption of twenty healthy and active starved fish per treatment was measured in a flow-through respirometer, to estimate standard and active metabolism (RS and RA, respectively). Urinary and gill loss of N was estimated from the difference between the nitrogen between intake and expenditure. The amount of energy lost as heat (R) was indirectly computed by the difference between energy intake and retained. The result showed that energy budget of Tra fish can be expressed as 100C = 36.8P + 4.90U + 29.7F + (10.5RS + 7.92RA + 10.6RF) for FMF and 100C = 46.3P + 3.62U + 16.5F + (9.42RS + 7.42RA + 16.8RF) for commercial pelleted feed. Despite the significantly different quantity of food intake between treatments, the daily dietary energy intake of Tra catfish (~20g) is approximately the same (565-605 J/g) for both feed types and the maintenance energy requirement per day is about 101 J/g. However, fecal and excretory energy losses for fish fed FMF were significantly (p < 0.05) higher than that of fish fed commercial pellets. As a result, 20g-Tra catfish fed FMF and commercial pellet retained 4.07 and 5.59 KJ 0f energy, respectively.
650 0 _aCatfishes
_xFeeding and feeds
650 0 _aBioenergetics
700 1 _aYakupitiyage, Amararatne,
_eChairperson
700 1 _aGallardo, Wenresti G.,
_eExamination Committee
700 1 _aThakur, Dhirendra Prasad,
_eExamination Committee
700 1 _aBhujel, Ram C.,
_eExamination Committee
700 0 _aNguyen Thanh Phuong,
_eExamination Committee
710 2 _aSweden (Sida),
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. AQ-10-02
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B01790
907 _a.b12143108
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962 _a000:001:PDF:b1214310:001877:0:0:0:0:0:0
_tAbstract -- AIT Thesis no. AQ-10-02
_vn
945 _lmnait
945 _lmnait
942 _c20
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