the effect of vitamin c on fatty acid compositionof caspian brown trout (salmo trutta caspius) fry

Authors

مریم خواجوی

دانش آموخته کارشناسی ارشد عبدالمحمد عابدیان کناری

عضو هیات علمی گروه شیلات دانشکده علوم دریایی دانشگاه تربیت مدرس

abstract

the objective of this study was to evaluate the effect of five dosage of vitamin c (0, 50, 250, 750 and 1500 mg vitamin c per kg diet) on fatty acid composition of caspian brown trout fry (salmo trutta caspius). fish (initial average body weight of 0.1 ± 0.02 g) were fed by formulated diets for 6 weeks in triplicate. the findings of growth parameters and survival showed significant difference among groups (p< 0.05). the lowest amount of sgr, bwg and survival was observed in control group while the group of 750 mg/kg had the highest amount of sgr, bwg and survival than those from others.the results showed that fish fed 750 mg/kg diet had a higher pufa, hufa, n-3 and n-6 fatty acids than those from other groups without significantdifference (p > 0.05). control treatment had a lower amount of pufa, hufa, n-3 and n-6 fatty acids than those from other treatments without significant (p>0.05). the sfa fatty acids had a higher amount in 1500 mg/kg diet than those from others without significant difference (p > 0.05). these results showed that vitamins c could be have an important role in protection of fatty acids against oxidation.

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Journal title:
بهره برداری و پرورش آبزیان

جلد ۳، شماره ۳، صفحات ۱-۱۴

Keywords
[ ' t h e o b j e c t i v e o f t h i s s t u d y w a s t o e v a l u a t e t h e e f f e c t o f f i v e d o s a g e o f v i t a m i n c ( 0 ' , 5 0 , 2 5 0 , ' 7 5 0 a n d 1 5 0 0 m g v i t a m i n c p e r k g d i e t ) o n f a t t y a c i d c o m p o s i t i o n o f c a s p i a n b r o w n t r o u t f r y ( s a l m o t r u t t a c a s p i u s ) . f i s h ( i n i t i a l a v e r a g e b o d y w e i g h t o f 0 . 1 ± 0 . 0 2 g ) w e r e f e d b y f o r m u l a t e d d i e t s f o r 6 w e e k s i n t r i p l i c a t e . t h e f i n d i n g s o f g r o w t h p a r a m e t e r s a n d s u r v i v a l s h o w e d s i g n i f i c a n t d i f f e r e n c e a m o n g g r o u p s ( p < 0 . 0 5 ) . t h e l o w e s t a m o u n t o f s g r ' , ' b w g a n d s u r v i v a l w a s o b s e r v e d i n c o n t r o l g r o u p w h i l e t h e g r o u p o f 7 5 0 m g / k g h a d t h e h i g h e s t a m o u n t o f s g r ' , ' b w g a n d s u r v i v a l t h a n t h o s e f r o m o t h e r s . t h e r e s u l t s s h o w e d t h a t f i s h f e d 7 5 0 m g / k g d i e t h a d a h i g h e r p u f a ' , ' h u f a ' , ' n ' , ' 3 a n d n ' , ' 6 f a t t y a c i d s t h a n t h o s e f r o m o t h e r g r o u p s w i t h o u t s i g n i f i c a n t d i f f e r e n c e ( p > 0 . 0 5 ) . c o n t r o l t r e a t m e n t h a d a l o w e r a m o u n t o f p u f a ' , ' h u f a ' , ' n ' , ' 3 a n d n ' , ' 6 f a t t y a c i d s t h a n t h o s e f r o m o t h e r t r e a t m e n t s w i t h o u t s i g n i f i c a n t ( p > 0 . 0 5 ) . t h e s f a f a t t y a c i d s h a d a h i g h e r a m o u n t i n 1 5 0 0 m g / k g d i e t t h a n t h o s e f r o m o t h e r s w i t h o u t s i g n i f i c a n t d i f f e r e n c e ( p > 0 . 0 5 ) . t h e s e r e s u l t s s h o w e d t h a t v i t a m i n s c c o u l d b e h a v e a n i m p o r t a n t r o l e i n p r o t e c t i o n o f f a t t y a c i d s a g a i n s t o x i d a t i o n . ' ]

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