افزايش مقاومت به استرس هاي محيطي PH و دما در لاروهاي قزل آلاي رنگين كمان از طريق تغذيه با آرتمياي غني شده با اسيدهاي چرب غيراشباع بلند زنجيره

Increasing the resistance to environmental stress (pH and temperature) in larvae of Oncorhynehus mykiss by feeding of n-3HUFA enriched Artemia nauplii

This experiment was conducted to increase the resistance to environmental stress in larvae of Rainbow trout by feeding of n-3 HUFA enriched Artemia, uauplii. Larvae were reared until 20 days in 4 treatment: 1= artificial food, 2= newly hatched Artemia, 3= enriched Artemia and 4= 50% enriched Artemia and 50% artificial food.The best result of resistance to pH stress was abserved in larvae that reared on treatment 3 with 98.9 +. 1.9 percent ofʹ survival in low pH stress and 66.5 + 3.7 percent of survival in high pH stress (p< 0.05). The best result ofʹ resistance to temprature stress was observed in treatment 3 and 4 with 77.8 percent of survival in high temprature stress(p<0.05).