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KMID : 1005220130280020113
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Journal of Embryo Transfer
2013 Volume.28 No. 2 p.113 ~ p.119
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Duration of Preservation Affect the Quality of Chilled Black Bengal Buck Semen
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Pradhan Md Gulshan Anowar
Rahman Md Saidur
Kwon Woo-Sung
Mishra Dipendra
Kamal Md Mostofa
Bhuiyan Mohammad Musharraf Uddin
Shamsuddin Mohammed
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Abstract
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The study focuses on the quality assessment of Black Bengal buck semen preserved at chilled condition. In this in vitro trial, collected semen from Black Bengal bucks was preserved at chilling temperature (4～5℃) in tris-glucosecitrate yolk medium of 1:5 ratios for four days. Artificial Vagina (AV) method was utilized to collect semen from buck. General evaluation of semen includes the color, mass activity and density were measured by direct visual examination. However, computer-assisted sperm analysis (CASA) and phase contrast microscopy were used to figure out the motility (%), hyper-activated (HYP) motility (%) and number of abnormal spermatozoa (%) initially, and at every 24 h intervals. The result revealed that spermatozoa preserved at chilling temperature showed significantly (P<0.05) lower motility and HYP motility with the progression of preservation. The number of phenotypically abnormal spermatozoa significantly (P<0.05) increased following preservation. Although significant positive correlation (r=0.945; P<0.05) was existed between % motile and % HYP motile spermatozoa however, the % of morphologically abnormal spermatozoa was negatively correlated with % motile (r=-0.997; P<0.05) and % HYP motile spermatozoa (r=-0.946; P<0.01). Therefore, we concluded that the quality of chilled semen progressively losses its viability and doesn't remain useable after certain period of preservation with respect to its motility and morphology.
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KEYWORD
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Black Bengal buck , semen , chilled , preservation , spermatozoa
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