TY - JOUR JF - ornamaqu JO - 3 VL - 2 IS - 1 PY - 2015 Y1 - 2015/4/01 TI - Effects of different levels of dietary prebiotic Immunogen on reproductive performance of angelfish (Pterophyllum scalare) breeders and larval survival resulting in a sudden increase of temperature stress TT - اثرات سطوح مختلف پربیوتیک ایمونوژن جیره غذایی بر شاخص‌های تولید‌مثلی مولدین ماهی آنجل (Pterophyllum scalare) و ارزیابی بقای لاروهای حاصله در مواجهه با تنش افزایش ناگهانی دما N2 - In this research, the effects of different levels of prebiotic Immunogen on reproductive performance of angelfish (Pterophyllum scalare) were investigated. 16 pairs of angelfish breeders with average weight 8.67±033 were fed till saturating for 50 days and after this period, reproductive indices such as absolute fecundity, hatching percent, larval survival until yolk-sac absorption, gonadosomatic index and larval tolerance against high temperature stress to amount 10 °C were evaluated. The experiment was carried out in completely randomize design with four levels 0 (control), 1% (T1), 1.5% (T2) and 2% (T3) that each treatment had 3 replications.  Amount of absolute fecundity in T2 significantly was higher than control (p0.05). Gonadosomatic index in T2 and T3 was upper than control and T1 that this difference was significant (p SP - 1 EP - 9 AU - Farahi, A AU - Sudagar, M AD - KW - Prebiotic KW - Immunogen KW - Reproductive performance KW - Angelfish (Pterophyllum scalare). UR - http://ornamentalaquatics.ir/article-1-36-en.html ER -