Relative efficacy of egg yolk and soya milk-based extenders for cryopreservation (-196 degrees C) of buffalo semen

被引:30
作者
Chaudhari, D. V. [1 ]
Dhami, A. J. [2 ]
Hadiya, K. K. [2 ]
Patel, J. A. [2 ]
机构
[1] Sabarmati Ashram Gaushala, Ahmadabad, Gujarat, India
[2] Anand Agr Univ, Coll Vet Sci & Anim Husb, Dept Anim Reprod Gynaecol & Obstet, Anand, Gujarat, India
关键词
buffalo semen; cryopreservation; extenders; egg yolk; relative efficacy; soybean milk;
D O I
10.14202/vetworld.2015.239-244
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
Aim: The aim was to compare commercially available soybean milk-based extenders, viz. Bioxcell (R) and Optixcell (R) (IMV, France) with standard Tris-citrate-fructose-egg yolk-glycerol (TFYG) extender for cryopreservation of buffalo semen. Materials and Methods: Semen was collected twice a week in artificial vagina from six sexually mature, 4-6 years old, healthy breeding bulls of Surti buffalo breed. In all 48 qualifying ejaculates (8 per bull) having initial motility > 70% were split into three equal aliquots and were diluted (at 34 degrees C keeping 100x106 sperm ml-1) in TFYG, Bioxcell and Optixcell extenders. The French mini straws filled from each aliquot were gradually cooled to 4-5 degrees C, equilibrated at 4 degrees C for 4 h and frozen in liquid nitrogen 2 vapor using programmable biofreezer. Just before freezing (post-equilibration) and 24 h after frozen storage, the samples were evaluated for various sperm quality parameters using standard protocols. Frozen semen straws were thawed in a water bath at 37 degrees C for 30 s. The post-thaw incubation survival (37 degrees C for 1 h) was assessed through motility rating at 0, 30 and 60 min of incubation. Results: The mean percentages of prefreeze sperms in TFYG, Bioxcell and Optixcell extenders in terms of progressive motility (69.48 +/- 0.37, 68.02 +/- 0.49, 70.94 +/- 0.38), viability (79.21 +/- 0.39, 77.38 +/- 0.48, 81.58 +/- 0.38), total abnormalities (7.90 +/- 0.14, 8.60 +/- 0.16, 7.08 +/- 0.15), intact acrosome (89.54 +/- 0.18, 88.58 +/- 0.22, 90.52 +/- 0.21) and hypoosmotic swelling (HOS) reactivity (67.96 +/- 0.32, 65.65 +/- 0.42, 70.23 +/- 0.37) varied significantly (p<0.05) between extenders. Similar pattern of significant (p<0.05) variations between these extenders for post-thaw sperm progressive motility (47.71 +/- 0.79, 44.38 +/- 0.85, 49.90 +/- 0.90), viability (57.19 +/- 0.79, 53.85 +/- 0.84, 59.67 +/- 0.91), total abnormalities (12.33 +/- 0.17, 12.75 +/- 0.21, 11.27 +/- 0.18), intact acrosome (76.83 +/- 0.23, 75.90 +/- 0.27, 78.50 +/- 0.25) and HOS reactivity (45.02 +/- 0.84, 42.31 +/- 0.82, 47.81 +/- 0.90) was also observed for TFYG, Bioxcell and Optixcell extenders. The recently launched improved soybean milk-based extender Optixcell excelled the older Bioxcell extender and even standard TFYG in respect of some of the sperm quality parameters. Conclusion: The advantages of soy lecithin-based bovine semen extenders over egg yolk regarding sanitary issues are unquestionable but still egg yolk-based semen extenders are widely used because of the cost factor and good in vivo fertility results.
引用
收藏
页码:239 / 244
页数:6
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