Iranian Journal of Fisheries Sciences
مجله علوم شیلاتی ایران
IJFS
Agriculture
http://jifro.ir
1
admin
1562-2916
10.18869/acadpub.ijfs
en
jalali
1390
4
1
gregorian
2011
7
1
10
3
online
1
fulltext
en
Growth, Molting and Survival Response of Juvenile Narrow Clawed Crayfish, Astacus leptodactylus, Fed Two Sources of Dietary Oils
Biology & physiology
Biology & physiology
پژوهشي
Orginal research papers
<p> The influence of five pure diets of isonitrogenous and isoenergic with different ratios of <i>Clupeidae</i> fish oil (F) and soybean oil (S) on growth, molting and survival of narrow-clawed crayfish, <i>Astacus leptodactylus</i>, was evaluated during an 8-weeks trial. As soybean oil replaced with fish oil in each treatment, gently. Test diets were inclusive F0/S100, F30/S70, F50/S50, F70/S30 and F100/S0 fish oil per soybean oil percent. The test organism housed in fiber-glass tanks of 100 l capacity with flowing water and aeration in tanks are supplied. The test followed a Randomized complete design. Each treatment organized with 6 replicates and totally 30 rearing tanks involved. At the end of the trial, the crayfish offered diet containing <i>Clupeidae</i> fish oil (rich in n-3 fatty acids) showed the lowest food conversion ratio and highest weight gain performance as well as molting and survival rates. In contrast, the diet containing soybean oil (rich in fatty acids n-6) contributed least to growth and other indices. Statistical test showed the differences between this two formulated diets were significant (P<0.05). Results indicated that n-3 series of fatty acids are required in the diet of <i>A. leptodactylus</i>.<strong></strong></p>
Astacus leptodactylus, Diet, Fish oil, Soybean oil , n-3, n-6 , Growth, Survival, molting
505
518
http://jifro.ir/browse.php?a_code=A-10-1-106&slc_lang=en&sid=1
A.
Valipour
valipour32@yahoo.com
10031947532846001603
10031947532846001603
Yes
F.
Shariatmadari
10031947532846001604
10031947532846001604
No
A.
Abedian
10031947532846001605
10031947532846001605
No
S. J.
Seyfabadi
10031947532846001606
10031947532846001606
No
A.
Zahmatkesh
10031947532846001607
10031947532846001607
No