Title of article
Effect of early tail-docking on luteinizing hormone pulse frequency in fat-tailed Tuj ewe-lambs
Author/Authors
كايا، محمت نويسنده Department of Physiology, Faculty of Veterinary Medicine, Ondokuz Mayis University, Samsun, Turkey Kaya, M , سنسيز، متين نويسنده Department of Physiology, Faculty of Veterinary Medicine, Ondokuz Mayis University, Samsun, Turkey Cenesiz, M , اوندر، فياض نويسنده Vocational School of Health Services, Akdeniz University, Antalya, Turkey Onder, F , اوزون، متهان نويسنده Department of Physiology, Faculty of Medicine, Canakkale Onsekiz Mart University, Canakkale, Turkey Uzun, M , ييلديز، صدات نويسنده Department of Physiology, Faculty of Medicine, Inonu University, Malatya, Turkey Yildiz, S
Issue Information
فصلنامه با شماره پیاپی 44 سال 2013
Pages
4
From page
250
To page
253
Abstract
هدف از انجام اين مطالعه اثر دم چيني بر فرکانس پالس هورمون LH در برههاي ماده نژاد تاژ بود. 12 راس بره ماده در دو گروه مساوي تقسيم شدند. حلقه لاستيکي در قاعده دم آنها قرار داده شد تا دم قطع گردد. هر بار نمونههاي خون به مدت 8 ساعت در سن 4 و 8 ماهگي برهها جمعآوري شد تا ترشح پالسي LH ارزيابي گردد. براي آناليز غلظت پروژسترون، از سن 6 ماهگي نمونههاي خون سه بار در هفته جمعآوري گرديد. پالس هورمون LH در اولين زمان آناليز غلظت LH وجود نداشت، اما پالسهاي اين هورمون در دومين زمان آناليز غلظت LH در هر دو گروه مشاهده شد. تعداد پالسهاي LH بين گروهها تفاوتي نداشت. در سرتاسر فصل توليد مثل، غلظت پروژسترون پلاسما کمتر از 1 نانوگرم در هر ميلي ليتر بود. در نتيجه، دم چيني برههاي ماده نژاد دنبهدار تاثيري بر پالس هورمون LH نداشت.
Abstract
The aim of the study was to investigate the effect of tail-docking on the LH pulse frequency in female Tuj lambs. Twelve female lambs were assigned into two equal groups. A rubber ring was applied to the base of the tail for shedding off. Blood samples were collected for 8 h in the 4th and 8th months of age to determine pulsatile secretion of LH. Starting from the age of 6 months, blood samples were taken thrice weekly for progesterone analyses. There was no LH pulse in the first LH analysis but the pulses were observed in both groups in the second LH analysis. However, number of pulses was not different between groups. The plasma progesterone level was less than 1 ng/ml throughout the breeding season. In conclusion, there was no effect of the tail-docking on pulsatility of LH in fat-tailed female lambs.
Journal title
Iranian Journal of Veterinary Research (IJVR)
Serial Year
2013
Journal title
Iranian Journal of Veterinary Research (IJVR)
Record number
1595902
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