fa بررسی تأثیر مکمل پودر خوراکی گیاه گزنه (Utrica dioica) بر شاخص‌های رشد و بازماندگی و فعالیت آنزیم‌های کبدی سرم خون کپور معمولی (Cyprinus carpio) تخصصي Special پژوهشي Research <span style="line-height:150%"><span style="direction:rtl"><span style="unicode-bidi:embed"><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:"><span style="color:black">تحقیق حاضر با هدف بررسی تأثیر پودر گزنه بر شاخص&shy;های رشد و بازماندگی و آنزیم&shy;های کبدی سرم خون بچه&shy; ماهیان کپور معمولی</span></span></span></span> <span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:"><span style="color:black">(</span></span></span></span><span dir="LTR" lang="EN-GB" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">ALP</span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">، </span></span></span><span dir="LTR" lang="EN-GB" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">ALT</span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">، </span></span></span><span dir="LTR" lang="EN-GB" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">AST</span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""> و </span></span></span><span dir="LTR" lang="EN-GB" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">LDH</span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:"><span style="color:black">) انجام شد. به همین منظور تعداد 180 عدد کپور معمولی با میانگین وزن 58/1</span></span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span cambria="" style="font-family:"><span style="color:black">&plusmn;</span></span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:"><span style="color:black">41/5 گرم تهیه و به مدت یک هفته قبل از شروع آزمایش جهت سازگاری در شرایط آزمایشگاهی نگهداری و با جیره تجاری فاقد پودر گزنه غذادهی شدند. سپس بچه ماهیان به طور کاملا تصادفی در چهار گروه تیماری به ترتیب حاوی صفر، 1، 2 و 3&nbsp; درصد پودر گزنه به ازای هر کیلوگرم جیره و سه تکرار به ازای هر تیمار،طی مدت هشت هفته غذادهی شدند. در پایان دوره آزمایش، نتایج نشان داد که شاخص&shy;های رشد در تیمار 3% پودر گزنه با میانگین رشد </span></span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:">06/2</span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span cambria="" style="font-family:">&plusmn;</span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:">46/11<span style="color:black"> و ضریب تبدیل غذایی 03/0</span></span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span cambria="" style="font-family:"><span style="color:black">&plusmn;</span></span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:"><span style="color:black">98/2 به طور معنی&shy;داری نسبت به تیمار شاهد کاهش داشت (05/0</span></span></span></span><span dir="LTR" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><span style="color:black">p<</span></span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:"><span style="color:black">). بیشترین درصد بازماندگی نیز در تیمار 3% پودر گزنه (84/3</span></span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span cambria="" style="font-family:"><span style="color:black">&plusmn;</span></span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:"><span style="color:black">77/77 درصد) مشاهده شد که نسبت به تیمار شاهد تفاوت معنی&shy;داری داشت (05/0</span></span></span></span><span dir="LTR" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><span style="color:black">p<</span></span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:"><span style="color:black">). همچنین، در ترکیب شیمیایی لاشه ماهیان مورد آزمایش تفاوت معنی‌داری بین تیمارها مشاهده نشد (05/0</span></span></span></span><span dir="LTR" lang="EN-GB" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><span style="color:black">p></span></span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:"><span style="color:black">). بررسی آنزیم های کبدی در سرم خون ماهیان نشان داد که میزان فعالیت آنزیم </span></span></span></span><span dir="LTR" lang="EN-GB" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><span style="color:black">AST</span></span></span></span> <span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:"><span style="color:black">در ماهیان تغذیه شده با سه درصد پودر گزنه نسبت به ماهیان گروه شاهد دارای افزایش معنی&shy;داری بود(05/0</span></span></span></span><span dir="LTR" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times=""><span style="color:black">p<</span></span></span></span><span lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span b="" nazanin="" style="font-family:"><span style="color:black">). به طور کلی نتایج نشان داد که پودر گزنه خوراکی تاثیری مثبتی بر رشد و کارایی تغذیه در ماهی کپور ندارد. </span></span></span></span></span></span></span> <span style="font-size:11pt"><span style="line-height:150%"><span calibri="" style="font-family:"><span lang="EN" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">This research was conducted with the aim of investigating the effect of nettle powder on the growth and survival indices and liver enzymes in the blood serum (ALP, ALT, AST and LDH) of common carp juveniles.</span></span></span> <span lang="EN" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">For this purpose, 180 common carp with an average weight of 5.41 &plusmn; 1.58 grams were prepared and kept in laboratory conditions for one week before the start of the experiment and fed with a commercial diet without nettle powder.</span></span></span> <span lang="EN" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">Then, the fish were completely randomly divided into four treatment groups containing 0 (control), 1, 2 and 3% of nettle powder per kilogram of diet and three repetitions for each treatment, during a period of eight weeks, based on 3% of their body weight. At the end of the experiment period, the results showed that the growth indices in the treatment of 3% nettle powder with the average growth rate </span></span></span><span dir="RTL" lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">)</span></span></span><span lang="EN" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">11.46&plusmn;2.06 </span></span></span><span dir="RTL" lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">(</span></span></span><span lang="EN" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">and the food conversion ratio </span></span></span><span dir="RTL" lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">)</span></span></span><span lang="EN" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">2.98&plusmn;0.03</span></span></span><span dir="RTL" lang="FA" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">(</span></span></span><span lang="EN" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">significantly decreased compared to the control treatment (p<0.05).The highest percentage of survival rate was observed in the 3% nettle powder treatment (77.77&plusmn;3.84%), which showed a significant difference compared to the control treatment (p<0.05).</span></span></span> <span lang="EN" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">Also, there was no significant difference between the treatments in the chemical composition of the tested fish carcasses (p>0.05).</span></span></span> <span lang="EN" style="font-size:10.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">The examination of liver enzymes in the blood serum of fishes showed that the level of AST enzyme activity in fishes fed with 3% nettle powder had a significant increase compared to the fishes of the control group (p<0.05). In general, the results showed that nettle does not have a positive effect on growth and feeding efficiency in carp.</span></span></span><span style="font-size:10.0pt"><span style="line-height:150%"><span style="font-family:"Times New Roman","serif""></span></span></span></span></span></span><br> &nbsp; پودر گزنه, بازماندگی, رشد, کپور معمولی, آنزیم‌های کبدی سرم خون Nettle powder, survival, growth, common carp, liver enzymes of blood serum 28 35 http://jair.gonbad.ac.ir/browse.php?a_code=A-10-34-4&slc_lang=fa&sid=1 M. Homayounpour محمد همایونپور agharaei551@uoz.ac.ir 10031947532846008340 10031947532846008340 No Zabol U. دانشگاه زابل Gharaei احمد قرایی agharaei551@gmail.com 10031947532846008341 10031947532846008341 Yes Zabol U. دانشگاه زابل Javad Mirdar Harijani جواد میردار هریجانی javadmirdar@gmail.com 10031947532846008342 10031947532846008342 No Zabol U. دانشگاه زابل Abdolali Rahdari عبدالعلی راهداری javadmirdar@yahool.com 10031947532846008343 10031947532846008343 No Zabol U. پژوهشگاه زابل Roghaye Karami رقیه کرمی agharaei551@yahoo.co.uk 10031947532846008344 10031947532846008344 No Zabol U. پژوهشگاه زابل