بررسی اثرمتقابل عصاره‌های گیاهی (کنوکارپوس، یوکا و پالونیا) بر عملکرد رشد، فعالیت آنزیمی هپاتوپانکراس و کیفیت آب محیط پرورش میگوی وانامی در دو سیستم پرورش (محیط بیوفلاک و بدون بیوفلاک)

اﯾﻦ ﻣﻄﺎﻟﻌﻪ ﺑﻪﻣﻨﻈﻮر ﺑﺮرﺳﯽ اﺛﺮ ﻣﺘﻘﺎﺑﻞ ﺳﯿﺴﺘﻢ ﭘﺮورش (ﺑﯿﻮﻓﻼک و ﺑﺪون ﻓﻼک) و اﻓﺰودﻧﯽﻫﺎی ﻏﺬاﯾﯽ (ﯾﻮﮐﺎ، ﮐﻨﻮﮐﺎرﭘﻮس، ﭘﺎﻟﻮﻧﯿﺎ و ﺷﺎﻫﺪ) ﺑﺮ ﻋﻤﻠﮑﺮد رﺷﺪ و ﺗﻐﺬﯾﻪ، ﻓﻌﺎﻟﯿﺖﻫﺎی آﻧﺰﯾﻤﯽ و ﮐﯿﻔﯿﺖ آب ﻣﺤﯿﻂ ﭘﺮورش ﻣﯿﮕﻮ ﭘﺎﺳﻔﯿﺪ اﻧﺠﺎم ﺷﺪ. ﻣﯿﮕﻮی ﭘﺎ ﺳﻔﯿﺪ ﺑﺎ ﻣﯿﺎﻧﮕﯿﻦ وزن 0/07± 1/47 ﮔﺮم و 0±/37 7/00 ﺳﺎﻧﺘﯽﻣﺘﺮ در 24 ﻣﺨﺰن ﺑﺎ ﺣﺠﻢ آﺑﮕﯿﺮی 50 ﻟﯿﺘﺮ ﺑﺮای 30 روز ذﺧﯿﺮهﺳﺎزی ﺷﺪ. آزﻣﺎﯾﺶ در ﻗﺎﻟﺐ ﻃﺮح ﮐﺎﻣﻼً ﺗﺼﺎدﻓﯽ ﺑﺎ 8 ﺗﯿﻤﺎر و ﻫﺮ ﯾﮏ ﺑﺎ 3 ﺗﮑﺮار ﺑﻮد ﮐﻪ ﺷﺎﻣﻞ؛ ﺑﯿﻮﻓﻼک+ 1% ﻋﺼﺎرهﻫﺎی ﮔﯿﺎﻫﯽ ﯾﻮﮐﺎ (by)، ﮐﻨﻮﮐﺎرﭘﻮس (bco) و ﭘﺎﻟﻮﻧﯿﺎ (bp)، ﺷﺎﻫﺪ (bc) و ﺑﺪون ﺑﯿﻮﻓﻼک+ 1% ﻋﺼﺎرهﻫﺎی ﮔﯿﺎﻫﯽ ﯾﻮﮐﺎ (y)، ﮐﻨﻮﮐﺎرﭘﻮس (co) و ﭘﺎﻟﻮﻧﯿﺎ (p)، ﺷﺎﻫﺪ (c). ﺗﻔﺎوت ﻣﻌﻨﯽداری ﺑﯿﻦ ﭘﺎراﻣﺘﺮﻫﺎی ﺗﻮﻟﯿﺪ ﻣﯿﮕﻮ در ﺑﯿﻦ ﺗﯿﻤﺎرﻫﺎ وﺟﻮد ﻧﺪاﺷﺖ. ﺑﯿﺸﺘﺮﯾﻦ وزن (0/14±4/66 ﮔﺮم) و ﮐﻤﺘﺮﯾﻦ ﺿﺮﯾﺐ ﺗﺒﺪﯾﻞ ﻏﺬاﯾﯽ (0/04±0/92) ﺑﺮای ﻣﯿﮕﻮﻫﺎی ﭘﺮورش ﯾﺎﻓﺘﻪ در ﺗﯿﻤﺎر bcoﺑﺪﺳﺖ آﻣﺪ. ﺑﯿﺸﺘﺮﯾﻦ ﺳﻄﺢ آﻣﯿﻼز، ﻟﯿﭙﺎز و ﭘﺮوﺗﺌﺎز در ﺗﯿﻤﺎرﻫﺎی y و by ﺑﻪدﺳﺖ آﻣﺪ. ﻋﺼﺎره ﮔﯿﺎه ﯾﻮﮐﺎ در ﺟﯿﺮه ﻏﺬاﯾﯽ ﻣﻨﺠﺮ ﺑﻪ ﮐﺎﻫﺶ آﻣﻮﻧﯿﺎک ﺷﺪ. ﻧﺘﺎﯾﺞ ﻧﺸﺎن داد ﮐﻪ ازﻋﺼﺎره conocarpus erectus ﺑﺮای ﺗﻘﻮﯾﺖ ر ﺷﺪ و از ﻋ ﺼﺎره yucca schidigera ﺑﺮای ﺑﻬﺒﻮد ﮐﯿﻔﯿﺖ آب ﻣﯽﺗﻮان در ﺳﯿﺴﺘﻢ ﺑﯿﻮﻓﻼک اﺳﺘﻔﺎده ﻧﻤﻮد.

Interaction of plant extract (Conocarpus erectus, Yucca schidigera and Paulownia fortunei) on growth performance, hepatopancreas enzyme active and culture water quality of Litopenaeus vannamei in two culture system (biofloc and nobiofloc)

This study was carried out to evaluate the combined effect of culture system (biofloc and nobiofloc) and dietary additives (control, Yucca schidigera, Conocarpus erectus and Paulownia fortunei) the feed and growth performance, enzyme activities and culture water quality of Litopenaeus vannamei. White leg shrimp with an average weight of 1.47 ± 0.07 g and 7.00± 0.37 cm were stocked into 24 tanks with 50 L capacity for 30 days. The experiment was based on a completely randomized design with 8 treatments by triplicate including; Biofloc +1% herbal extracts Yucca (BY), Conocarpus (BCO), Palonia (BP), Control (BC) and Without Biofloc+ 1% herbal extracts Yucca (Y), Conocarpus (CO), Palonia (P), Control (C). There were no significant differences in shrimp production parameters between treatments. The highest weight (4.66 ± 0.14 g) and the lowest feed conversion ratio (0.92 ± 0.04) were obtained for shrimp reared in BCO. The highest levels of amylase, lipase and protease are obtained in the Y and BY treatments. Yucca extract in the diet leads to a reduction in ammonia. The results showed that Conocarpus erectus extract could be used to enhance growth and Yucca schidigera extract to improve water quality in Biofloc system.