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اثر افزودنی خوراکی لیزوفسفولیپیدها (لیزولستین) و ویتامین C در دوره پایانی بر عملکرد، خصوصیات لاشه و پاسخ ایمنی جوجه های گوشتی در شرایط تنش گرمایی و دمای عادی | ||
| علوم دامی | ||
| مقاله 14، دوره 31، شماره 119، شهریور 1397، صفحه 155-168 اصل مقاله (1.14 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/asj.2017.115146.1516 | ||
| نویسندگان | ||
| سمیرا زنگنه1؛ مهران ترکی* 2؛ هوشنگ لطف الهیان3؛ علیرضا عبدالمحمدی2 | ||
| 1دانشجوی دکتری تخصصی تغذیه دام، گروه علوم دامی، دانشکده علوم و مهندسی کشاورزی، دانشگاه رازی، کرمانشاه | ||
| 2دانشیار و عضو هیئت علمی گروه علوم دامی، دانشکده علوم و مهندسی کشاورزی، دانشگاه رازی، کرمانشاه | ||
| 3استادیار موسسه تحقیقات علوم دامی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران. | ||
| چکیده | ||
| این آزمایش به منظور بررسی تأثیر لیزوفسفولیپید و ویتامین C بر عملکرد، خصوصیات لاشه و پاسخ ایمنی جوجههای گوشتی تحت شرایط تنش گرمایی و دمای عادی انجام شد. تعداد 1680 قطعه جوجه گوشتی مخلوط (کاب 500) در دوره پایانی (38-21 روزگی) به دو گروه تقسیم شدند و در گروه اول 480 قطعه جوجه در چهار تیمار و چهار تکرار (30= n) در دمای عادی (1± 24 درجه سلسیوس) پرورش یافتند و در گروه دوم 1200 قطعه جوجه در چهار تیمار و 10 تکرار (30= n) در دمای بالا (1± 34 درجه سلسیوس به مدت 8 ساعت در روز) قرار گرفتند. در هر دو گروه چهار جیره بر اساس آزمایش فاکتوریل 2×2 شامل لیزوفسفولیپید (صفر یا 1000 میلیگرم در کیلوگرم) و ویتامین C (صفر یا 500 میلیگرم در کیلوگرم) تنظیم شد. در هردو گروه استفاده از لیزوفسفولیپید موجب افزایش ضریب تبدیل خوراک و کاهش افزایش وزن شد (سطح احتمال05/0). در گروه تنش گرمایی، افزایش قابلیت زنده مانی، تیتر آنتیبادی علیه برونشیت، وزن نسبی بورس و تیموس در جوجه های تغذیه شده با لیزوفسفولیپید و افزایش وزن نسبی تیموس و طحال در جوجههای تغذیه شده با ویتامین C در مقایسه با گروه شاهد مشاهده شد(سطح احتمال05/0) . در پرندگان تغذیه شده با لیزوفسفولیپید در شرایط عادی، افزایش معنی-دار طول نسبی ژئوژنوم دیده شد(سطح احتمال05/0). اثر متقابل معنیداری بین لیزوفسفولیپید و ویتامین C بر پاسخ به فیتوهماگلوتنین A مشاهده شد. بهطورکلی بر اساس نتایج بدست آمده در این بررسی، استفاده از لیزوفسفولیپید و ویتامین C موجب بهبود پاسخ سیستم ایمنی جوجههای گوشتی شد. | ||
| کلیدواژهها | ||
| جوجه گوشتی؛ لیزوفسفولیپیدها؛ ویتامین C؛ تنش گرمایی؛ دمای معمولی | ||
| عنوان مقاله [English] | ||
| Effects of dietary lysophospholipids (lysolecithin) and vitamin C as feed additive in finishing period on performance, carcass characteristics and immune response of broiler chickens reared under thermonatural and high ambient temperature | ||
| نویسندگان [English] | ||
| Samira Zangeneh1؛ Mehran Torki2؛ houshang lotfollahian3؛ Alireza Abdolmohammadi2 | ||
| 1Animal Science Department, Razi University | ||
| 2Animal Science Department, Razi University | ||
| 3Member of Scientific Board Animal Science Research Institute of Iran | ||
| چکیده [English] | ||
| This experiment was conducted to evaluate the effect of lysophospholipid and vitamin C on performance, carcass characteristics and immune response of broiler chicks reared under thermonatural and high ambient . A total of 1680 mixed sexes broiler chicks (Cobb 500) in finishing rearing period (days 21-38 of age) allotted to two groups. In the first group, 480 chicks were subjected to four treatments with four replicates (n=30) and maintained in usual ambient temperature (24±1°C, thermonatural group: TN). In second group, the 1200 chicks were subjected to four treatments with 10 replicates (n=30), and exposed to high ambient temperature (34±1°C for 8 h daily, heat-stressed group: HS). Based on a 2 × 2 factorial arrangements in both groups, four experimental diets including LPLs (0 or 1000 mg/kg) and VC (0 or 500 mg/kg) were formulated and fed the chickens. In both groups, LPLs decreased body weight gain and increased FCR (P<0.05). In HS group, increased livability, antibody against bronchitis, relative weight of bursa and thymus were observed in chickens fed LPLs-supplemented diet (P<0.05) and increased relative weight of thymus and spleen were detected in chicks fed the VC-supplemented diet (P<0.05). In TN group, increased relative length of jejunum in birds fed LPLs-supplemented diet (P<0.05) and a significant interaction between LPLs and VC on response to phytohemagglutinin were detected. In conclusion, dietary supplemental LPLs and VC improved immune response of broiler chickens. | ||
| کلیدواژهها [English] | ||
| broilers, Lysophospholipids, vitamin C, Heat stress, Thermonatural | ||
| مراجع | ||
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