Evaluation of Yucca schidigera extracts addition in rainbow trout diet (Oncorhynchus mykiss) under ammonia stress: growth performance, feed efficiency, and water quality

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 287

نسخه کامل این مقاله ارائه نشده است و در دسترس نمی باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

BIOCONF20_087

تاریخ نمایه سازی: 28 اردیبهشت 1398

چکیده مقاله:

The present study was aimed at determining the effects of dietary Yucca schidigera extract on growth, feed and water quality of rainbow trout (Oncorhynchus mykiss) under stress ammonia. Fish with an average weight of 18.89± 1.65 g and 12.40± 0.77 cm was tested in four treatments, each with three replicates for 60 days. Experimental treatments included adding different levels of extract to base food, 0% (control), 0.5% (Y1), 1% (Y2) and 1.5%(Y3) respectively. Comparison of mean values obtained from final weight, weight gain, daily growth rate and specific growth rate showed a significant difference between Y3 and control treatment. There was a statistically significant difference in the amount of feed conversion ratio (FCR) between different treatments, so that was obtained the lowest in Y2 (0.94 ± 0.16) and the highest in control (1.25 ± 0.16). The physical and chemical parameters were within the recommended range for R.trout. The highest amounts of ammonia and nitrate were observed in control and the least was in Y1 treatment, while there was no statistical difference between treatments. The results of this experiment showed that increased dietary content of Yucca increase growth performance and feed efficiency compared with control treatment

نویسندگان

Seyed Hamed Masoumi

Department of Fisheries, Faculty of Agriculture Science and Natural Resources, University of Gonbad Kavous

Hossein Adineh

Department of Fisheries, Faculty of Agriculture Science and Natural Resources, University of Gonbad Kavous

Mohammad Harsij,

Department of Fisheries, Faculty of Agriculture Science and Natural Resources, University of Gonbad Kavous

Hojat Allah Jafaryan

Department of Fisheries, Faculty of Agriculture Science and Natural Resources, University of Gonbad Kavous