کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10892246 | 1082095 | 2012 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pregnancy rates in mares inseminated with 0.5 or 1 million sperm using hysteroscopic or transrectally guided deep-horn insemination techniques
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Pregnancy rates in mares inseminated with 0.5 or 1 million sperm using hysteroscopic or transrectally guided deep-horn insemination techniques Pregnancy rates in mares inseminated with 0.5 or 1 million sperm using hysteroscopic or transrectally guided deep-horn insemination techniques](/preview/png/10892246.png)
چکیده انگلیسی
Placement of sperm deep in the equine uterine horn allows fewer sperm to be inseminated while maintaining acceptable fertility, and has been promoted for use in circumstances when fertility would be expected to be low if standard insemination were used (e.g., semen from a subfertile stallion, or frozen-thawed semen). Two main techniques, transrectally guided (TRG) and hysteroscopic (HYS) insemination, have been developed for this purpose; however, there is some controversy regarding their comparative efficacy. This study was conducted to compare pregnancy rates when mares were inseminated by TRG or HYS, using sperm numbers approaching and under the minimum threshold, resulting in reduced fertility. When 1 Ã 106 sperm were inseminated, pregnancy rates were not different (P > 0.10) between techniques HYS (10/13, 77%) and TRG (11/15, 73%). Similarly, when 0.5 Ã 106 sperm were inseminated, pregnancy rates were not different (P > 0.10) between techniques HYS (3/15, 20%) and TRG (4/13, 31%). Combined pregnancy rates for the two treatments were 13/28 (46%) for HYS and 15/28 (54%) for TRG (P > 0.10). Pregnancy rates using a subthreshold number of sperm were not significantly affected by a deep-horn insemination technique.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Theriogenology - Volume 78, Issue 4, 1 September 2012, Pages 914-920
Journal: Theriogenology - Volume 78, Issue 4, 1 September 2012, Pages 914-920
نویسندگان
S.S. Hayden, T.L. Blanchard, S.P. Brinsko, D.D. Varner, K. Hinrichs, C.C. Love,