مقايسه استفاده از اسيد آمينه تورين به صورت مخلوط با غذا و اسپري بر عملكرد رشد و تغذيه و پاسخ هاي فيزيولوژيك ماهي سي باس آسيايي (Lates calcarifer)

Comparison of the use of taurine in combination with feed and sprays in growth and feeding performance and physiological responses of Asian sea bass (Lates calcarifer

هدف از اين مطالعه ﻣﻘﺎﯾﺴﻪ اﺳﺘﻔﺎده از اﺳﯿﺪ آﻣﯿﻨﻪ ﺗﻮرﯾﻦ ﺑﻪ ﺻﻮرت ﻣﺨﻠﻮط و اﻓﺸﺎﻧﻪ ﺑﺎ ﻏﺬا ﺑﺮ ﻋﻤﻠﮑﺮد رﺷﺪ و ﺗﻐﺬﯾﻪ، ﺗﺮﮐﯿﺐ ﻻﺷﻪ و ﭘﺎﺳﺦ ﻫﺎي ﻓﯿﺰﯾﻮﻟﻮژﯾﮏ ﻣﺎﻫﯽ ﺳﯽ ﺑﺎس آﺳﯿﺎﯾﯽ )Lates calcarifer( )0/2 ± 13/62 ﮔﺮم( ﺑﻮد. اﯾﻦ ﻣﻄﺎﻟﻌﻪ در ﻗﺎﻟﺐ ﻃﺮح ﮐﺎﻣﻼً ﺗﺼﺎدﻓﯽ ﺑﺎ 3 ﺗﯿﻤﺎر و 3 ﺗﮑﺮار اﻧﺠﺎم ﺷﺪ. ﻣﺎﻫﯿﺎن ﺑﻪﻣﺪت 6 ﻫﻔﺘﻪ ﺑﺎ ﺟﯿﺮهﻫﺎي ﺣﺎوي ﺻﻔﺮ )ﮔﺮوه ﺷﺎﻫﺪ(،10 ﮔﺮم ﺗﻮرﯾﻦ ﺑﻪ ﺻﻮرت اﻓﺸﺎﻧﻪ ﺗﯿﻤﺎر S و 10 گرم به صورت مخلوط با غذا (تيمار M) در هر كيلوگرم غذا تغذيه شدند. در پايان آزمايش، زن ﻧﻬﺎﯾﯽ، درﺻﺪ اﻓﺰاﯾﺶ وزن ﺑﺪن، ﻧﺮخ رﺷﺪ وﯾﮋه و ﺿﺮﯾﺐ ﺗﺒﺪﯾﻞ ﻏﺬاﯾﯽ ﺑﻪ ﻃﻮر ﻣﻌﻨﯽدار در ﺗﯿﻤﺎر S ﻧﺴﺒﺖ ﺑﻪ ﮔﺮوه ﺷﺎﻫﺪ و ﺗﯿﻤﺎر M ﺑﺎﻻﺗﺮ ﺑﻮد )0/05>p(. ﻣﯿﺰان ﭼﺮﺑﯽ و رﻃﻮﺑﺖ ﻻﺷﻪ ﺑﻪﻃﻮر ﻣﻌﻨﯽدار در ﺗﯿﻤﺎر M ﺑﺎ ﮔﺮوه ﺷﺎﻫﺪ و ﺗﯿﻤﺎر S ﺗﻔﺎوت داﺷﺖ )0/05>p( . ﺑﺎ وﺟﻮد اﯾﻦ، ﻣﯿﺰان ﭘﺮوﺗﺌﯿﻦ ﻻﺷﻪ در ﺗﯿﻤﺎرﻫﺎي M و S ﺗﺤﺖ ﺗﺄ ﺛﯿﺮ ﻗﺮار ﻧﮕﺮﻓﺖ )0/05

The aim of this study was to compare the effects of adding taurine to diet as a mixture with feed and also as spray on growth and feeding performance, body composition and physiological responses of Asian sea bass, Lates calcarifer (13.62 ± 0.2 g). This study was carried out in a completely randomized design as three treatments with triplicates. Fish were fed with feed containing 0 (control group), 10 g/kg taurine in feed as mixture (treatment M) and 10 g/kg as spray on feed (treatment S) for 6 weeks. At the end of the experiment, final weight, weight gain, specific growth rate and feed conversion ratio were significantly higher in treatment S compared to the control and treatment M (p<0.05). Carcass fat and moisture contents significantly varied in treatment M with the control and with treatment S (p<0.05). However, carcass protein value was not influenced by supplemented tuarine (p>0.05). The obtained results indicated that dietary taurine did not enhance Asian sea bass blood biochemical factors and non-specific immune response (p>0.05). Overall, it can be concluded that feeding Asian sea bass with the diet supplemented by 10 g taurine as spray for a period of 6 weeks enhances the growth and feeding performance.