fa تاثیر اسید لینولئیک جفت شده (CLA) بر صفات تولیدی و مورفولوژی روده کوچک جوجه های گوشتی تخصصي Special پژوهشي Research <p align="right" style="DIRECTION: rtl"><font face="Times New Roman"><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" lang="AR-SA" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="">در آزمایشی به منظور بررسی تاثیر اسید لینولئیک جفت شده بر صفات تولیدی و خصوصیات مورفولوژیک روده کوچک، از 300 قطعه جوجه گوشتی در قالب یک طرح کاملاً تصادفی با 5 تیمار و 4 تکرار و 15 جوجه در هر تکرار استفاده شد. جیره های آزمایشی عبارت بودند از جیره&shy;های حاوی 7% روغن سویا، 7% </span><span 12pt="" 2="" ar-sa="" black="" color:="" en-us="" font-size:="" mso-ansi-language:="" mso-bidi-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="">CLA</span><span dir="rtl"></span><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" lang="AR-SA" mso-ansi-font-style:="" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="" yes=""><span dir="rtl"></span>،</span><i style="mso-ansi-font-style: normal"><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" lang="AR-SA" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="">&nbsp;</span></i><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" lang="AR-SA" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="">5/3% </span><span 12pt="" 2="" ar-sa="" black="" color:="" en-us="" font-size:="" mso-ansi-language:="" mso-bidi-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="">CLA</span><span dir="rtl"></span><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times=""><span dir="rtl"></span> <span lang="AR-SA"><font size="5">+ 5/3% روغن سویا، 10 درصد روغن هیدروژنه و جیره شاهد فاقد چربی. کمترین افزایش وزن و مصرف خوراک در تیمار حاوی 7% </font></span></span><span 12pt="" 2="" ar-sa="" black="" color:="" en-us="" font-size:="" mso-ansi-language:="" mso-bidi-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="">CLA</span><span 14pt="" 2="" ar-sa="" black="" color:="" en-us="" font-size:="" mso-ansi-language:="" mso-bidi-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="">&nbsp;</span><span dir="rtl"></span><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times=""><span dir="rtl"></span><font size="5"><span style="mso-spacerun: yes">&nbsp;</span><span lang="AR-SA">مشاهده گردید اما تاثیر تیمار مذکور بر ضریب تبدیل غذایی معنی دار بود (05/0 ></span></font></span><span 12pt="" 2="" ar-sa="" black="" color:="" en-us="" font-size:="" mso-ansi-language:="" mso-bidi-font-family:="" mso-bidi-font-style:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="" yes="">P</span><span dir="rtl"></span><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" lang="AR-SA" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times=""><span dir="rtl"></span>). بطور کلی جیره حاوی روغن سویا و نیز جیره فاقد چربی منجر به کاهش معنی&shy;دار</span><span dir="ltr"></span><span 14pt="" 2="" ar-sa="" black="" color:="" en-us="" font-size:="" lang="AR-SA" mso-ansi-language:="" mso-bidi-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times=""><span dir="ltr"></span> </span><span dir="rtl"></span><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" lang="AR-SA" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times=""><span dir="rtl"></span>(05/0 ></span><span 12pt="" 2="" ar-sa="" black="" color:="" en-us="" font-size:="" mso-ansi-language:="" mso-bidi-font-family:="" mso-bidi-font-style:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="" yes="">P</span><span dir="rtl"></span></font><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" lang="AR-SA" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times=""><span dir="rtl"></span><font face="Times New Roman">) در ارتفاع پرزهای روده در بخش&shy;های دئودنوم و ژژنوم گردیدند ولی در ایلئوم فقط جیره حاوی روغن سویا منجر به بروز چنین کاهشی شد<br> (05/0 ></font></span><span 12pt="" 2="" ar-sa="" black="" color:="" en-us="" font-size:="" mso-ansi-language:="" mso-bidi-font-family:="" mso-bidi-font-style:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="" yes="">P</span><span dir="rtl"></span><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" lang="AR-SA" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times=""><span dir="rtl"></span><font face="Times New Roman">). جوجه های تغذیه شده با جیره حاوی 5/3% روغن سویا + 5/3% </font></span><span 12pt="" 2="" ar-sa="" black="" color:="" en-us="" font-size:="" mso-ansi-language:="" mso-bidi-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="">CLA</span><span dir="rtl"></span><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" lang="AR-SA" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times=""><span dir="rtl"></span><font face="Times New Roman"> دارای بلند ترین طول پرز بودند. جیره 5/3% روغن سویا + 5/3% </font></span><span 12pt="" 2="" ar-sa="" black="" color:="" en-us="" font-size:="" mso-ansi-language:="" mso-bidi-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="">CLA</span><span dir="rtl"></span><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times=""><span dir="rtl"></span><font face="Times New Roman">&nbsp;</font><span lang="AR-SA"><font face="Times New Roman" size="5">منجر به کاهشی معنی&shy;دار در تعداد سلول گابلت و نیز ضخامت اپیتلیوم گردیدند. تیمار حاوی 7% روغن سویا و نیز جیره فاقد چربی منجر به افزایش<br> معنی&shy;داری در ضخامت اپیتلیوم شدند. عمق کریپت در بخش دئودنوم و ژژنوم توسط جیره حاوی<span style="mso-spacerun: yes">&nbsp; </span>5/3% روغن سویا + 5/3% </font></span></span><span 12pt="" 2="" ar-sa="" black="" color:="" en-us="" font-size:="" mso-ansi-language:="" mso-bidi-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="">CLA</span><span dir="rtl"></span><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times=""><span dir="rtl"></span><font face="Times New Roman">&nbsp;</font><span lang="AR-SA"><font face="Times New Roman" size="5">افزایش یافت بطوریکه تفاوت مشاهده شده بجز با تیمار حاوی 7% روغن سویا در دئودنوم، در مقایسه با سایر تیمارها در هر دو بخش از نظر آماری معنی&shy;دار بودند<br> (05/0 ></font></span></span><span 12pt="" 2="" ar-sa="" black="" color:="" en-us="" font-size:="" mso-ansi-language:="" mso-bidi-font-family:="" mso-bidi-font-style:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="" yes="">P</span><span dir="rtl"></span><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" lang="AR-SA" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times=""><span dir="rtl"></span><font face="Times New Roman">). نتایج تحقیق حاضر نشان داد که اسید لینولئیک جفت شده در سطح 7% جیره بطور نامطلوبی صفات تولیدی را در جوجه</font></span><span 14pt="" 2="" ar-sa="" black="" color:="" en-us="" font-size:="" mso-ansi-language:="" mso-bidi-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times="">&shy;</span><span 14pt="" 2="" ar-sa="" black="" color:="" dir="rtl" en-us="" font-size:="" lang="AR-SA" mso-ansi-language:="" mso-ascii-font-family:="" mso-bidi-language:="" mso-fareast-font-family:="" mso-fareast-language:="" mso-hansi-font-family:="" mso-no-proof:="" new="" style="FONT-FAMILY: " times=""><font face="Times New Roman">های گوشتی تحت تاثیر قرار داده اما در سطح 5/3% منجر به اثرات مطلوبی بر مورفولوژی روده و بویژه افزایش طول پرز گردید. </font></span></p> &nbsp;<br> &nbsp;&nbsp;&nbsp;&nbsp; The effects of conjugated linileic acid on performance and small intestine morphology were studied using 300 broiler chickens in a compeletly randomized design with 5 treatments and 4 replicates and 15 chickens in each replicate. The experimental diets were contained 7% soybean oil, 7% CLA, 3.5% CLA + 3.5% soybean oil, 10% hydrogenated oil and control oil free diet. The lowest weight gain and feed intake were observed in the group fed with 7% CLA, but this treatment improved feed conversion ratio. The villi hieght was reduced in duodenum section of birds fed with diet containing soybean oil or control, but in ileum section just the soybean oil diet caused the same effect. The chicks fed with 3.5% soybean oil + 3.5% CLA had the highest villi length. The diets with 7% soybean oil and 3.5% soybean oil + 3.5% CLA &nbsp;decreased epithelium thickness. Crypth depth in duodenum and jejunum increased with 3.5% soybean oil + 3.5% CLA diet so that the differences with other treatmernt were significant ecxept with the 7% soybean oil diet in duodenum. The results of the present study showed that CLA at 7% level adversly affect performance but the diet containing 3.5% CLA improved morphological parameters of small intestine especially villi length. اسید لینولئیک جفت شده, مورفولوژی روده کوچک, جوجه گوشتی Conjugated linileic acid, Small intestime morphology, Broiler chickens 22 36 http://rap.sanru.ac.ir/browse.php?a_code=A-10-1-40&slc_lang=fa&sid=1 Meysam Alipour میثم علیپور 10031947532846009827 10031947532846009827 Yes University of Mohaghegh Ardabili دانشکده علوم دامی، دانشگاه محقق اردبیلی Bahman Navidshad بهمن نویدشاد 10031947532846009828 10031947532846009828 No University of Mohaghegh Ardabili دانشکده علوم دامی دانشگاه محقق اردبیلی Masoud Adib Moradi مسعود ادیب مرادی 10031947532846009829 10031947532846009829 No Faculty of veterinary medicine, University of Tehran دانشکده دامپزشکی دانشگاه تهران Reza Seyed Sharifi رضا سید شریفی 10031947532846009830 10031947532846009830 No University of Mohaghegh Ardabili دانشکده علوم دامی دانشگاه محقق اردبیلی