Fatty Acid Composition of Fat-Tail and Visceral Fat Depots from Chaal and Zandi Pure Bred Lambs and Their Crosses with Zel (Three Iranian Breeds)
محورهای موضوعی : Camelم. مؤمن 1 , ن. امام جمعه کاشان 2 , س.د. شریفی 3 , م. امیری رودبار 4 , ا. آیتالهی مهرجردی 5
1 - Department of Animal Science, Faculty of Agriculture, Shahid Bahonar Unviersity of Kerman, Kerman, Iran
2 - Department of Animal Science, College of Abouraihan, University of Tehran, Tehran, Iran
3 - Department of Animal Science, College of Abouraihan, University of Tehran, Tehran, Iran
4 - Department of Animal Science, Faculty of Agriculture, Shahid Bahonar Unviersity of Kerman, Kerman, Iran
5 - Department of Animal Science, Faculty of Agriculture, Shahid Bahonar Unviersity of Kerman, Kerman, Iran
کلید واژه: Zel, fatty acid profile, fat-tail, Chal, pure and cross bred lamb, saturated and unsaturated, visceral, Zandi,
چکیده مقاله :
The present study was done to evaluate the breed, sex and sampling site influence on fat-tail and visceral fatty acid composition of five pure and cross bred lambs from three Iranian sheep breeds. Particularly, on the content of saturated and unsaturated fatty acids from two cut-able fat depots (fat-tail and visceral). All animals were managed and finished up together and received the same diet. Statistically significant differences (P0.05). The result showed that SFA in Zel × Zandi, Chal × Chal and Zandi × Zandi lambs are more than the USF (P<0.05). In all the five groups, the most content of total saturated fatty acids (SFA) was made of palmetic acid (C16:0) and stearicacid (C18:0) and also, palmitoleic (C16:1 n7), oleic (C18:1) and linoleic acids (C18:2 n6) compromised most part of unsaturated fatty acids (UFA). However, the overall content of SFA and UFA was significantly affected by sampling site (P<0.01).
مطالعه حاضر به منظور بررسی اثر نژاد، جنس و محل نمونه برداری بر ترکیب اسیدهای چرب در چربی دنبه و احشایی در پنج گروه برههای خالص و آمیخته حاصل از سه نژاد ایرانی انجام شد. محتوای اسیدهای چرب اشباع و غیر اشباع در این دو منبع چربی قابل جدا شدن از لاشه (دنبه و احشایی) به طور ویژه بررسی شد. تمامی برهها در شرایط یکسان تغذیه و پروار شدند. تفاوت آماری معنیداری در دوسطح 5 درصد و 1 درصد در نسبت برخی از اسیدهای چرب در بین نژادها، دو جنس و محل نمونه برداری مشاهده شد. مقادیر اسیدهای چرب غیراشباع (USF) در چربی دنبه بسیار بیشتر از چربی احشایی بود (01/0P<). علاوه بر این، تفاوت معنیداری از لحاظ مجموع کل اسیدهای چرب اشباع (SFA) در بین چربی احشایی و دنبه مشاهده نشد (05/0P>) و همچنین این دومنبع چربی تحت تأثیر جنس قرار نگرفتند (05/0P>). نتایج نشان داد که میزان SFA در برههای نژاد زل × زندی، شال × شال و زندی × زندی بیشتر از USF می باشد (05/0P<). در تمامی پنج گروه ژنتیکی مورد مطالعه بیشتر محتوای اسیدهای چرب اشباع (SFA) متشکل از پالمتیک اسید (C16:0) و استئاریک اسید (C18:0) و همچنین، پالمیتو لئیک (C16:1 n7)، اولئیک (C18:1) و لینولنیک اسید (C18:2 n6) بخش اعظمی از مجموع اسیدهای چرب غیر اشباع را تشکیل میدادند. به طورکلی، محتوای کلیSFA و USF به طور معنیداری تحت تأثیر محل نمونه برداری قرار گرفت (01/0P<).
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