کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5796401 1110704 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Seasonal changes in sperm DNA fragmentation of Murciano-Granadina goats: The compelling case for dynamic assessment
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
پیش نمایش صفحه اول مقاله
Seasonal changes in sperm DNA fragmentation of Murciano-Granadina goats: The compelling case for dynamic assessment
چکیده انگلیسی

Evidence is provided of seasonal changes in the rate of DNA fragmentation dynamics of sperm collected from goats Murciano-Granadina breed), in a Spanish Breeding Centre at 41°N latitude. Results show that the initial assessment of sperm DNA fragmentation (T0) was not sufficient to differentiate sperm DNA fragmentation of bucks collected at different times of the year (Kruskal-Wallis 2.399; P = 0.493). However, when thawed semen was subsequently incubated at 37 °C for periods of between 2 and 48 h, differences were recorded in the rate of sperm DNA fragmentation (r-SDF), that are indicative of seasonal changes in reproduction (Log Rank: Mantel-Cox; χ2 = 158.6; DF = 3; P < 0.001). Goat semen collected and cryopreserved in the Spanish winter and spring resulted in a poor post-thaw sperm DNA longevity and recorded a r-SDF of 0.8 and 1.3 per hour, after 48 h of incubation respectively. The r-SDF subsequently decreased to 0.16 and 0.36 per hour during summer and autumn. It is therefore, recommended that semen samples from Murciano-Granadina goats housed above the 40°N latitude be collected and cryopreserved in the summer and early autumn. This would result in a more stable DNA molecule, which is likely to improve the reproductive success.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Small Ruminant Research - Volume 100, Issue 1, September 2011, Pages 50-53
نویسندگان
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