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Paper Information

Journal:   PAJOUHESH-VA-SAZANDEGI   WINTER 2007 , Volume 19 , Number 4 (73 IN ANIMAL AND FISHERIES SCIENCES); Page(s) 49 To 58.
 
Paper: 

USE OF ARTEMIA URMIANA DECAPSULATED CYST IN RAINBOW TROUT LARVAE DIET

 
 
Author(s):  YARAHMADI B.*, MOGHADASI F., SIAVASHI R.
 
* FACULTY OF AGRICULTURE AND RESOURCES OF LORESTAN
 
Abstract: 

Nowadays, in larvae aquaculture used from live prey very application. Artemia decapsulated cyst was among aquafeed due to highly nutritive value, more digestibility and simple production such as the resource of important feed in rainbow trout larvae feeding. This research was carried out using of artemia decapsulated cyst replacement protein resources in trout rainbow larvae diet. In view of different levels of artemia decapsulated cyst on growth rate, feed intake and others characteristics of larva was done by a expriment base on completely randomized design. Experimental parameters were measured consist of growth rate (GR),daily weight gain, larvae length, feed conversion ratio (FCR), feed intake(FI)and survival rate. Data were statistically analyzed by MSTATC package and means comparisons by Duncan’s New Multiple Range Test. The treatments were consist of 5, 10,15,20,25 Percentage artimia decapsulated cyst and control treatment that contain of commercial diet. Three replication were marked in each treatment. This experiment was conducted on 1000 larva in fry tank with 18 hatching trough. Initial average weight for larva was 125±25 mg that for 40 days until one grams weight. The diets were formulated with UFFDA (1992) package with pay attention to Artemia constant values. The results showed that treatments 5% and 10% have had the best situation of daily weight gain with 28.54 ±7.29 and 28.85±7.28 mg among the others groups. This treatment was no significant difference with each other (p>0.05) and with others groups were significant difference (p< 0.05). The most measurement SGR and SR were 86.04±2.78 and 2.42 percentage for treatment 5% aremia decapslated cyst among other the groups. So that control treatment was the least daily weight gain with 28.12±6.32 mg. Feed intake in different biometry periods was statistically significant difference. With advanced time of experiment. From the second biometry data to experiment final the treatments 5 and 10% were the least feed intake and the most it’s related to treatment 15,20 and 25% respectively. Feed conversion ratio in treatment 5% was the best among the groups with 0.88 ±0.09 (p< 0.05). Consequently, Pay attention to weight and feed conversion among different groups, treatment 5% aremia decapslated cyst diet was the best treatment in larva rainbow trout. The most measurment SGR and SR were 86.04±2.78 and 2.42 percentage for treatment 5% aremia decapslated cyst among other the groups.

 
Keyword(s): CYST DECAPSULATED, ARTEMIA URMIANA, GROWTH RATE (GR), FEED CONVERSION RATIO (FCR), FEED INTAKE (FI), SURVIVAL RATE(SR), LARVAE RAINBOW TROUT
 
References: 
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