کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5538734 | 1552359 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Urinary purine derivatives excretion, rumen microbial nitrogen synthesis and the efficiency of utilization of recycled urea in Tibetan and fine-wool sheep
ترجمه فارسی عنوان
دفع مشتقات پورین ادرار، سنتز نیتروژن میکروبی شکمبه و بهره وری استفاده از اوره بازیافت شده در تبت و گوسفند پشم گوسفند
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کلمات کلیدی
ADFNDFH2SO4PDNPNISABDNA - DNA یا اسید دزوکسی ریبونوکلئیکLAB - آزمایشگاهdeoxyribonucleic acid - اسید deoxyribonucleicRNA - اسید ریبونوکلئیکribonucleic acid - اسید ریبونوکلئیکsulphuric acid - اسید سولفوریکacid detergent fiber - الیاف پاک کننده اسیدDigestible energy - انرژی قابل هضمneutral detergent fiber - فیبر مواد شوینده خنثیThe Qinghai-Tibetan Plateau - قطعه چینگهای-تبتانهdry matter - ماده خشکPurine derivatives - مشتقات پورینurinary purine derivatives - مشتقات پورین ادرارNitrogen - نیتروژنTibetan sheep - گوسفند تبتی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
چکیده انگلیسی
Urinary purine derivatives (PD) excretion, rumen bacterial purine bases and nitrogen (N) variations, estimated microbial N synthesis and the efficiency of utilization of recycled urea-N were determined in Tibetan and Gansu Alpine fine-wool sheep offered 4 diets with different N concentrations [11.0, 16.7, 23.1 and 29.2 g N/kg dry matter (DM)] in 2 concurrent 4 Ã 4 Latin square designs. Urine output increased linearly with increasing dietary N concentration (P < 0.001), and was lower in Tibetan than in fine-wool sheep (P < 0.05). With an increase in dietary N, urinary PD and the components increased linearly (P < 0.05), except for uric acid (P > 0.10); however, the purine nitrogen index (PNI) decreased (P < 0.001). For the lowest N diet, allantoin, total PD and PNI were greater in Tibetan sheep than in fine-wool sheep (linear dietary N Ã breed, P < 0.05). As dietary N increased, rumen bacterial purine bases [ribonucleic acid (RNA) equivalent] decreased linearly (P < 0.05), whereas total N content increased (P < 0.05). Compared to fine-wool sheep, rumen bacteria of Tibetan sheep contained higher RNA and lower N content (P < 0.01). Total microbial N production and microbial N from recycled urea-N increased linearly with dietary N but did not differ between breeds at low N diets (P > 0.05). As a proportion of total microbial N synthesis or hepatic urea-N production, recycled urea-N was utilized more efficiently in Tibetan than in fine-wool sheep (P < 0.05). These results suggest that Tibetan sheep are better able to cope with a low protein diet, which is characteristic of the Qinghai-Tibetan Plateau during the long-cold season, than are Gansu Alpine fine-wool sheep.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Animal Feed Science and Technology - Volume 227, May 2017, Pages 24-31
Journal: Animal Feed Science and Technology - Volume 227, May 2017, Pages 24-31
نویسندگان
J.W. Zhou, J.D. Mi, A.A. Degen, L.M. Ding, X.S. Guo, Z.H. Shang, W.W. Wang, R.J. Long,