http://ir.lib.ruh.ac.lk/handle/iruor/7344 2026-04-05T21:02:38Z http://ir.lib.ruh.ac.lk/handle/iruor/18369 Effect of feeding hearble enriched Artemia on the growth performance and stress resistence of guppy fry (Peicilia reticulata) Sandamail, L.; Kumudu, R.; Rathnapala, J.M.S.N. Artemia is one of the commonly used live-feed in hatchery production in aquaculture industry. The nutrient composition of Artemia can be enhanced by bioencapsulation using various sources. The present study was conducted to evaluate the growth performance and stress resistance of guppy fry (Poecilia reticulata) fed on Artemia enriched with different herbal ingredients ie: green kankung (Ipomoea aquatica) or carrot (Daucus carota). Herbal ingredients were mixed with oil to make the enrichment solution and ІІ instar stage of Artemia (36 hr after hatching) was used for the enrichment. Two days old guppy fry was fed with unenriched Artemia (UE), Artemia enriched with carrot juice (CJ) or Artemia enriched with kankung powder (KP) for 21 days and the growth, survival and stress resistance of fry were evaluated. These comparisons were tested using one-way ANOVA. After a feeding trial of 21 days, the total length was significantly higher in fry in CJ treatment (14.59 ± 0.84 mm) followed by fry in KP treatment (13.83 ± 0.16 mm) and fry in UE treatment (12.14 ± 0.83 mm). Fry fed on CJ and KP enriched Artemia showed higher mean final weight (0.0279 ± 0.0048 g, 0.0263 ± 0.0012 g) and % Specific Growth Rate (SGR) (6.98 ± 0.063, 6.39 ± 0.99) respectively compared to the fry fed on unenriched Artemia (0.0167 ± 0.009 g, 4.64 ± 0.064 g). Fry in all treatments showed 100% survival rate by the end of the experiment period (21 days) and were subjected to stress resistance test. Cumulative Mortality Index (CMI) for salinity stress test was significantly different in the three treatments. Highest CMI (960) value, therefore lower salinity resistance was observed in the fry fed with KP enriched Artemia, and the lowest CMI (0) value and the highest salinity resistance was observed in fry in CJ treatment group. Further fry in CJ (CMI 400) and KP (CMI 320) treatments showed higher thermal resistance compared to fry in UE treatment (CMI 720). The present study reveals that Artemia enrichment using carrot juice can be used to enhance growth and stress resistance of guppy fry in aquarium condition. 2018-01-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/18367 Color enhancement and the growth performance of Buenos Aires (BA) tetra (Hemmigrammus caudovittatus) fed with marigold petal meal (Tagetes erecta) and a commercial feed Rathnapala, J.M.S.N.; Radampola, K.; Dissanayake, A. n,e pre$ent in,cstigotion was aimed at dctcm1ining the effects of dietary supplemenl.ltion of different pigment sources on colour development. gm\\ th. focd conversion and sur.i"al of Buenos Aires {B A) tctm ( lf,m1migmm11111s cm11lovitre11us), Th< fish (0.69-J: 0.02g. n􀀬72) fed on diets e-0ntaining 3% marigold petal meal (MD) and C<lmmercial colour recd '' Super Red" (SR) were compared with the fish fed on a control diet with,,ut 311) pigments (CD) for 72 days. Daily food consumption, length and weight of fish al I\\O wteks intenals and total carotenoid content of skin (meluding tins) of fish at the end of 1hc expcrinoent were measured. The carotenoid content of skin was significantly different (p< 0.05.\ among the fish fed on MO, SR, and CD die1s. The fish fed 011 Mf) diets showed the highc.,t total carotenoid contcll\ (6.15 ± I.SO mg/g_l in their s􀆓in compared 10 fish fed on olher t"o diets. Fish fed on SR feed had 4,86± 2.12 mglg of total carotcnnid cc,ntent m their tissues "hile the lowe.t carotenoid com,·nt wns obscned in tht> fish fed on CO die1 (2.04± 0.Sti nig/g). I he dictar;· carotcnoid sources did not significantly affect U1c grt>"th perfonnancc. 1',:rcc11t:1ge Srx:cific GroMh Rate ranged from 0.92J 0.02 10 1.23 ± 0.20 and teed conversion ranged from 0.90± 0.42 to 1.97± 0.14 of B A tetra fed w􀈥th different diets. <:unoval nttc was equal (100%) for all tl1e treallnents. TI11> present study shows th8t the marigold petal meal can be used as o natural pigment source to prepare a low cost diet wnhout affecting growth, feed conversion and survival of l:l A tetra, 2012-01-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/18366 Effect of pumpkin meal (Cucurbita sp.) on color enhancement and the growth performance of Buenos Aires (BA) tetra (Hemmigrammus caudovittatus) Rathnapala, J.M.S.N.; Radampola, K.; Dissanayake, A. The investig:1tion \\as und1:rtaken to de1em1in1: the effects of dir.:tary supplementation of differem p1gmeni ,Lmrces on color enhancement. growth, feed conversion and survival of A1w110s Aires tDA) tctru (H11111mixrc1111111us caudol'illcll11l). The fish (n=72) (0.69:.: 0.02g) \\t:rt: fod "1th dicrs containing 3% pumpkin meal (PD) and commerc1al color feed .. Super Red· ( C,R) lo ,;om pare ,􀂹 ith the fish fed w11h a control diet without any pigments (CD I for -2 days. Dail) food con,11mp11on and length. weight measurements of fish at two \\ eek, inter-al \\ere taken and at the end of the i:xperiment. t0tal carotenoid content of lish was measured The fi5h fed \\ ith PD diets 􀄓howcd the highest total carotenoid ..:ontenl (6.36 ± 1.16 pg/g) m their skin. fins and flesh followed by the fish fed with SR feed (-l.86± 2. 12􀅁1g/g) while thi: lov.cst cnroteno1d conti:nl was observed in the fish fed w 1th CO diet (2.0,a U 58ftg/g). The carotenoid content was significant!) different (p< 0.05) among the fish fed \\ith PD, SR. and CD diets. The <lietar)' carotenoid sources did not :.igniticantl: affect the growth pcrfonnance while the percentage Specific Growth Rate ranged imm O 9:!J. 0 02 to 1.27.,. 0.0S and feed conversion ranged from 0.79± 0,05 to I 97± 0.1-l of BA tetra fed with different diets (p> 0.05 ). Survival rate of the fish was equal for all the treatments. The profit mdcx of the preparation of PD diet (2.27:: 0.90) was 􀇰ignilicuntl) higher than that of SR feed (0.88-= 0.36) (p>0.05). According to the re,ults, the pumpkin meal can be u􀈑cd as a n3tur..tl piµment source fw n h)w cost as it is nN al1i.:c1111g the gm" th. Iced convep;11111 and ,un h al of 13A tetra. 2014-01-01T00:00:00Z http://ir.lib.ruh.ac.lk/handle/iruor/18364 Effect of pigments extracted from shrimp wastes in diets on skin and flesh colouration of Oreochromis niloticus. Bandera, A.M.K.A.; Cumaranatunga, P.R.T.; Gamage, K.R. Colour of fish 2014-01-01T00:00:00Z