کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8962725 | 1646596 | 2018 | 33 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Saturated fatty acids may ameliorate environmental heat stress in broiler birds by affecting mitochondrial energetics and related genes
ترجمه فارسی عنوان
اسیدهای چرب اشباع می توانند استرس گرمایی محیطی را در پرندگان جوجه های گوشتی تحت تاثیر قرار دهند و انرژی های میتوکندری و ژن های مرتبط
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کلمات کلیدی
BWGnitrogen-corrected apparent metabolizable energyANTFCRAMEnUCPcDNA - cDNAComplementary DNA - DNA تکمیلیGC/MS - GC / MSAdenosine Triphosphate - آدنوزین تری فسفاتATP - آدنوزین تری فسفات یا ATPHeat stress - استرس گرماییBody weight gain - افزایش وزن بدنGene expression - بیان ژنadenine nucleotide translocator - ترجمه آدنین نوکلئوتیدیelectron transport chain - زنجیره انتقال الکترونPoultry - ماکیانFeed intake - مصرف غذاMitochondrion - میتوکندریونfeed conversion ratio - نسبت تبدیل خوراکETc - و غیرهUncoupling protein - پروتئین جدا کردنGas Chromatography-Mass Spectrometry - گاز کروماتوگرافی-اسپکترومتری جرمی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم کشاورزی و بیولوژیک (عمومی)
چکیده انگلیسی
Heat stress decreases performance of poultry. The novel strategies to maintain production level, or at least minimizing the decrease in productivity during hot days need to be elucidated. This study was conducted to determine the effect of four fat types on mitochondrial energetics in heat-stressed broilers. In experiment 1, nitrogen-corrected apparent metabolizable energy (AMEn) content of four supplemental fat sources, including olive oil, soybean oil, coconut oil and beef tallow, all supplemented at 3%, 6%, and 9% in the basal diet, was evaluated. The AMEn values of fats were determined as 9738.0â¯Â± 137.9, 8949.0â¯Â± 159.9, 7844.0â¯Â±â¯91.7, and 7368.0â¯Â±â¯190.3â¯kcal/kg for olive oil, soybean oil, coconut oil and beef tallow, respectively. In experiment 2, birds were kept in two separated rooms under 24â¯Â°C or 36â¯Â°C from 32 to 42 d of age. Each room consisted of four experimental groups. Birds in the experimental groups were fed on beef tallow-, coconut oil-, olive oil- or soybean oil-supplemented diets (factorial arrangement with two factors of fat types and environmental temperatures). The birds reared under 24â¯Â°C had higher final body weight (Pâ¯<â¯0.01), weight gain (Pâ¯<â¯0.01), feed intake (Pâ¯<â¯0.05) and lower feed conversion ratio (Pâ¯<â¯0.01) than the birds grown under 36â¯Â°C. There was a temperature by fat type interaction effect on mitochondrial attributes. At 36â¯Â°C, in birds fed on coconut oil- or beef tallow-supplemented diets, the expression levels of avUCP and avANT mRNA were lower (Pâ¯<â¯0.05) but that of HSP70 mRNA was higher (Pâ¯<â¯0.01) in comparison with the birds feeding on the olive oil- or soy oil-supplemented diets. An interaction effect was recorded between the temperature and fat type for ATP concentration and mitochondrial membrane potential (Pâ¯<â¯0.01); with significant differences between birds receiving the coconut oil- or beef tallow-supplemented diets and the birds feeding on the soy oil- or olive oil-supplemented diets. It was also found that unsaturated fatty acids had a more significant effect on avUCP and avANT mRNA expression. It can be concluded that when using fat in the diet of heat stressed-broilers, it is advisable to choose a type, which has a lower effect on the expression of avUCP and avANT, and hence reduces the metabolic heat load in the bird.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Thermal Biology - Volume 78, December 2018, Pages 1-9
Journal: Journal of Thermal Biology - Volume 78, December 2018, Pages 1-9
نویسندگان
Kazem Seifi, Mansour Rezaei, Asad Teimouri Yansari, Gholam Hossein Riazi, Mohammad Javad Zamiri, Reza Heidari,