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1.
为了充分利用野生动物资源,本试验首次对野生盘羊与巴什拜羊杂交F1代公羊精液低温和冷冻保存方法进行了研究。结果:在低温(4±0.5)℃条件下稀释保存F1代羊精液,其中采用葡萄糖-蔗糖-柠檬酸钠-卵黄稀释液(III液)低温保存绵羊精子的时间和活率(168 h,0.35)显著优于葡萄糖-柠檬酸钠-卵黄稀释液(II液)(72 h,0.30)、葡萄糖-乳糖-卵黄稀释液(IV液)(48 h,0.35)和葡萄糖-乳糖-卵黄稀释液(I液)(18 h,0.42);采用4种不同冷冻稀释液制作杂交F1代公羊细管冻精,用III液冷冻保存后解冻效果最佳,解冻后精子活率为(48.6±0.4)%,畸形率为(11.20±2.02)%、顶体完整率为(58.4±3.68)%。 相似文献
2.
本实验旨在探究一种更为高效可行且有利于绵羊精液在 4℃条件下延时保存的稀释液配方。采用含有不同成分及含量脱脂牛奶、维生素 A、维生素 D、维生素 E 等物质的 6 个稀释液配方稀释精液,每隔 6 h 测定稀释后精液中精子的畸形率、死亡率、活力以及运动速率,持续检测 96 h。结果表明:72 h 时配方四稀释液稀释后精子畸形率为 15.89%、死亡率为 48.52%、活力为 41.05、运动速率为 42.10 μm/s,精子畸形率和死亡率极显著低于其他 5 个稀释液配方(P<0.01),精子活力和运动速率极显著高于其他 5 个稀释液配方(P<0.01);通过测定分析,配方四精液稀释液中添加脱脂牛奶、维生素 A、维生素 D、维生素 E、卵黄、恩诺沙星、双抗和高浓度柠檬酸钠有助于提高精子活力和保存时间,筛选出的最佳精液稀释液配方操作过程简便有效,快速可行,精液保存 48 h 后精子活力达 68.17%,可用于绵羊人工授精。 相似文献
3.
根据无角道赛特公羊精液在不同稀释液中的保存效果观察,筛选出保存效果较好的A配方稀释液.该稀释液低温保存36 h后精子的活力仍为0.75,用A液稀释精液,常温下细管封装,低温输送到配种点,进行常规人工授精,输配小尾寒羊的情期受胎率78.2%(79/101)、产羔率249%(174/69),与对照组情期受胎率76.7%(69/90)、产羔率238%(186/78),差异不显著(P＞0.05). 相似文献
4.
乌兰察布市四子王旗在“杜蒙”肉羊经济杂交改良配种中,采取阴道海棉栓加血促性素(PMSG)同期发情技术,对待配母羊实施人工授精配种。笔者为提高种公羊利用率和配种受胎率,在人工授精配种中的精液稀释保存环节上,经过多次筛选和应用试验,推广使用了“葡萄糖-柠檬酸钠”稀释液做为同期发情配种中种羊精液的首选稀释液,经过对稀释后精液进行常(低)温保存试验和大量生产应用效果观察显示,用“葡萄糖-柠檬酸钠液”对种公羊精液做3~6倍的稀释后,在常温环境下(20~25℃),1~3 h之内完成输精,取得了平均情期受胎率达79.2%的良好配种受胎效果。 相似文献
5.
6.
甘肃高山细毛羊虽经十多年的选育提高,仍存在类型不一、腹毛偏短、羊毛综合品质差等缺陷,1990年引入澳美公羊进行杂交试验。为了提高澳美公羊的利用率,开展了绵羊精液大倍稀释保存技术的试验示范。选择以脱脂奶为主要成分的稀释液。确定一次输入的有效精子数为1500万个,稀释比例为1:10,最大为1:14。大倍稀释精液在室温10—20℃,12小时内精子活力仍保持0.8以上。在0—5℃条件下保存24小时,精子活力保持在0.6左右。大倍稀释鲜精一个情期一次输精0.1ml,授配母羊375只,受胎母羊284只,情期受胎率75.73%; 相似文献
7.
[目的]为测试牛细管冷冻精液解冻后在常温水中的保存时间对精子活力的影响,为非定点配种寻求有效简便的冻精携带方法,观察精子在不同解冻温度下的存活时间及受胎率。[方法]选择5个解冻温区及不同时间解冻肉牛细管冻精,解冻后置于常温水(17℃~19℃)中保存,观测解冻温度和精子存活时间对受胎率的影响。[结果]50℃、60℃、70℃、解冻后精子的保存时间差异不显著,保存至72h时精子活力均低于0.35;受胎率差异不显著;随保存时间延长,受胎率呈下降趋势,在48h以内情期受胎率和总受胎率分别维持在61.8%~67.1%和91.9~95.8。[结论]70℃各时间段解冻后保存效果最佳,60℃解冻组次之,二者在精子活力≥0.35时情期受胎率和总受胎率达到63.0%、92.5%,略高于当地黄牛两项受胎率的平均值61.1%、91.7%,解冻后细管精液置于常温水中携带到较远的区域输精对精子活力、母牛受胎率无影响。 相似文献
8.
绒山羊精液冷冻保存技术的研究 总被引：1，自引：0，他引：1
为了使绒山羊精液得到长期保存,充分发挥和提高优良种公羊的利用率,本实验对绒山羊精液冷冻保存技术进行了研究,比较了4种自行研制的保存稀释液的冷冻效果。结果表明:采用Ⅰ液(葡萄糖-卵黄-柠檬酸钠)冷冻保存绒山羊精液,解冻后精子活率(0.508±0.010)极显著高于Ⅱ液(葡萄糖-卵黄-乳糖-柠檬酸钠)(0.275±0.008)、Ⅲ液(葡萄糖-卵黄-蔗糖-柠檬酸钠)(0.354±0.012)和IV液(葡萄糖-卵黄-蔗糖-乳糖-柠檬酸钠)(0.319±0.006)(P<0.01);Ⅲ液极显著高于Ⅱ液(P<0.01)和显著高于Ⅳ液(P<0.05)。解冻后Ⅰ液的精子顶体完整率(59.4%±0.5%)极显著高于Ⅱ液(47.1%±0.8%)、Ⅲ液(52.4%±0.6%)和IV液(51.3%±0.5%)(P<0.01)。精液解冻后在室温(23±2)℃下避光培养,Ⅰ液中精子活率在5h内能够保持0.30以上,Ⅱ、Ⅲ液和Ⅳ液精子活率维持在0.3不到2h。 相似文献
9.
《当代畜牧》2019,(7)
低温造成的氧化损伤是精液品质下降的主要原因。本试验旨在研究4℃低温保存对绵羊精子运动参数、线粒体活性和抗氧化水平的影响。采集3只杜泊公羊的精液,使用常规卵黄稀释液进行8倍稀释后放入4℃冰箱保存,分别在0 h、24 h、48 h和72 h后检测精子运动参数和抗氧化水平。结果表明,随着保存时间的延长,精子活率和运动参数逐渐下降,但72 h后精子活力仍保持在50%左右,活率高于70%;GSH-Px酶活性和T-AOC逐渐降低,MDA逐渐升高,72 h后精子线粒体活性显著低于0 h,但与48 h相比差异不显著。研究表明,精液在低温保存72 h后,其质量、抗氧化水平和线粒体活性均会显著下降,可以考虑在这个时间段加入线粒体靶向抗氧化剂,以延长精子的保存时间,减缓精液品质下降程度。 相似文献
10.
大熊猫人工授精的几个问题 总被引：4，自引：0，他引：4
大熊猫利用人工授精繁殖后代在我国首获成功,自1978年至1980年三年中,共输精16只,四只产仔。大熊猫原精液为乳白色,pH值为6.4至7.4,每毫升有17亿至20亿精子。在0～5℃下保存时用卵黄—葡萄糖—柠檬酸钠液稀释,原精液与稀释液的容量比为1:3或1:4时,保存效果较好,保存72小时后精子活率在30％以上。在超低温(-196℃)条件下保存时用蔗糖—甘油—卵黄液稀释,原精液与稀释液的容量比为1:3,滴冻后置入液氮中保存到二年时复苏后活率仍维持在入存时的水平。此外,还比较详细地介绍了雌大熊猫发情时行为、食欲和生殖器官的某些规律性变化。当出现求偶行为时,上述变化达到高潮。此时动物处在发情期,是输精的最适时间。北京动物园人工授精繁殖的四胎,均在此时输精。关于采精和输精问题,作者认为,输精比较难,其技术关键是准确地将精液注入子宫颈中,这对于提高受胎率是至关重要的。 相似文献
11.
Tsutsui T Tezuka T Mikasa Y Sugisawa H Kirihara N Hori T Kawakami E 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2003,65(3):307-312
Cooled canine semen solutions for storage were investigated with three stock solutions: egg yolk-citrate-glycine-glucose solution, egg yolk Tris-fructose citrate solution (EYT-FC), and egg yolk sodium citrate dihydrate solution (EYCD). For the control group, the second fraction of semen was examined. Nine male beagles and 37 female (47 experimental cases) beagles for artificial insemination (AI) were used. The qualities of semen stored at 4 degrees C deteriorated earlier in the control and EYCD groups. In the other two groups, sperm motility was 60% or higher after storage for 6 days and 20% or higher after storage for 12 days. On a comparison of these two groups, the sperm motility and viability were slightly higher in the EYT-FC group. A high conception rate was obtained by AI using semen stored at a low temperature for a maximum of two days in the control group and four days in the EYT-FC group. 相似文献
12.
为加强濒危珍稀动物种质资源的保护,开展了濒危珍稀禽类—红腹锦鸡的人工授精研究。2005年5月26日~6月8日,对8只红腹锦鸡用手按摩其背、尾部采精12次。初测其精液品质,结果表明,采精量平均(0.114±0.016)mL(0.01~0.2 mL),每毫升精液中精子平均3.2亿个(3.0~3.3亿),活力9级以上,pH值6.5,偏酸性,淡乳白色(半透明似冲熟的藕粉),微腥。鲜精分别加11%蔗糖—卵黄稀释液(3号液);11%蔗糖—0.1%柠檬酸三钠—卵黄稀释液(5号液);5%葡萄糖—卵黄稀释液(8号液)。精子活力达8~9级。用3%柠檬酸三钠—卵黄稀释液(2号液)稀释,精子活力2级。冷冻时,用11%蔗糖溶液100 mL中加16 mL鲜卵黄,加5 mL甘油,配制的3号冷冻稀释液稀释,解冻后,精子活力达4级。优于试验中选拟的其它配方(加入5 mL甘油的5号冷冻液,解冻后精子活力为3级;加入5 mL甘油的8号冷冻液,解冻后未见活的精子)。如果冷冻稀释液中甘油改为6 mL,则解冻后精子全部死亡。 相似文献
13.
Tsutsui T Tanaka A Takagi Y Nakagawa K Fujimoto Y Murai M Anzai M Hori T 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2000,62(12):1247-1251
Frozen feline semen was prepared using two types of extenders, egg yolk Tris-fructose citric acid (EYT-FC) and egg yolk sodium citrate solution (EYC), and the semen qualities after thawing and the conception rates obtained by unilateral intrauterine horn insemination (UIUI) were investigated. Cats used in the experiment were six males and 11 females aged 2-12 years (the number of experimental cases was 17). For preparation of frozen semen, semen collected by the artificial vagina method was adjusted to I x 10(8) sperm/m/ and 7% glycerol, put in 250 microl straws, and then frozen using a cell freezer. The mean sperm motility after thawing was 30.0+/-9.7 (SE) % in the semen prepared with EYT-FC and 30.0+/-3.3% in the semen prepared with EYC. Four of seven animals were fertilized by UIUI using two straws in both extenders, and the conception rate was 57.1%. The mean ratios of number of kits to the number of ovulations in the inseminated side were 61.1+/-24.5% and 30.5+/-3.4% for EYT-FC and EYC, respectively, showing that the ratio tended to be higher in the semen prepared with EYT-FC. The above findings, comparing the two extenders for preparation of frozen feline semen, showed that EYT-FC is slightly superior to EYC. To increase conception and fertility rates, it may be important to increase the sperm count for insemination and to inseminate both uterine horns. 相似文献
14.
北极狐、乌苏里貉精液细管冷冻技术研究 总被引：1，自引：0，他引：1
为了对濒危珍稀动物种质资源的进行保护,完善精液冷冻技术方案,对北极狐37只次、乌苏里貉32只次的精液进行细管冷冻技术研究,结果表明,北极狐精液用3%柠檬酸三钠—卵黄—甘油作冷冻稀释液,乌苏里貉精液用11%蔗糖—卵黄—甘油作冷冻稀释液,在5℃冰箱内平衡1 h后,进行细管冷冻(液氮-196℃),冻溶粒子活力达4~5级。速冻法优于缓冻法。细管冻精在50℃温水中快速溶化,北极狐精液用3%柠檬酸三钠作解冻液,乌苏里貉精液用7%葡萄糖液作解冻液效果较佳。 相似文献
15.
Cauda epididymal spermatozoa were obtained from testicles collected from abattoir(s). The pooled sperm samples were divided into four aliquots. Each aliquot was washed separately with the buffer of respective extender and finally extended with the four extenders viz. egg yolk–citrate (EYC), egg yolk–citrate–fructose (EYCF), Tris–citric acid–egg yolk–fructose (TCEYF) and egg yolk–Mcillvaine glucose (EYMG) and preserved at 4°C. The per cent sperm motility for EYC, EYCF, TCEYF and EYMG at 0 h was 50.83%, 56.67%, 75.00% and 31.67%, respectively, and at 72 h was 24.17% (EYC), 30.83% (EYCF), 51.67% (TCEYF) and 7.50% (EYMG). The corresponding figures for live sperm count at 0 h was 83.17%, 86.33%, 90.42% and 81.75% and at 72 h was 64.75%, 73.92%, 76.00% and 57.67%. The corresponding figures for mean per cent intact acrosome at 0 h was 95.33%, 95.50%, 90.92% and 97.25% and at 72 h was 86.17%, 83.92%, 77.58% and 86.33%. The sperm motility was significantly (p < 0.05) higher for TCEYF at different h of preservation from 0 h through 72 h. The sperm motility, live sperm count and per cent intact acrosome declined significantly (p < 0.05) with the advancement of storage time in all the four extenders. Our study concluded that TCEYF was best out of the extenders studied for preservation of cauda epididymal spermatozoa after double centrifugation and extension at 4°C up to 72 h of preservation. However, EYCF also has better potential for the preservation of cauda epididymal spermatozoa as viability was in close proximity and acrosomal integrity was higher compared with TCEYF extender. 相似文献
16.
Takahashi T Itoh R Nishinomiya H Katoh M Manabe N 《Reproduction in domestic animals》2012,47(1):92-97
Despite normal eucrasia, mating desire and semen quality, sire bulls sometimes have spermatozoa with poor freezing tolerance. This study assessed effects of the addition of linoleic acid albumin (LAA) and long-term (LT) equilibrium to frozen semen on their sperm freezing tolerance. Immediately after collection using an artificial vagina and a breeding mount, semen was diluted with yolk citrate buffer; then, it was cooled slowly to 4°C during more than 5 h. Equilibrium treatment at 4°C was applied using the same extender supplemented with glycerol. Semen of bull A, with low sperm freezing tolerance, was treated with 1 mg/ml of LAA added to the first extender. The equilibrium treatment at 4°C was prolonged to 30 h. Significantly higher motility rates were obtained for the LT + LAA-treated sperm before and after freezing-thawing. However, for semen of bulls B and C with normal sperm freezing tolerance, the LT + LAA treatment barely exhibited a small effect on the motility rate. Almost no difference was found among bulls A, B and C in the motility rates of LT + LAA-treated sperm after freezing-thawing. No difference of fertility was apparent on LT + LAA-treated frozen sperm in comparison with normal sperm in embryonic collection and in vitro fertilization. It was not an aberration of fertility in vivo or in vitro. In addition, the conception rate of artificial insemination did not have a difference, and a normal calf was obtained. Results show that addition of LAA to an extender for frozen bovine spermatozoa and 30 h of low-temperature equilibrium might improve the motility of freezing-thawing spermatozoa with poor freezability. Sperm exhibited normal fertilization capability and ontogenic capability. 相似文献
17.
Fertility after insemination of cryopreserved boar semen is currently below that of fresh semen. In an attempt to improve the post-thaw motility and acrosome integrity of boar sperm, semen was frozen using an adapted Westendorf method in which the chicken egg yolk was replaced by either duck or quail egg yolk. The different composition of the yolk types, particularly the amount of cholesterol, fatty acids and phospholipids, were thought to potentially afford a greater level of protection to sperm against damage during freezing and thawing. Sperm frozen in medium containing chicken egg yolk displayed higher motility immediately after thawing, but there was no difference in the motility of sperm frozen with different types of egg yolk 3 or 6 h after thawing and maintenance at 37 degrees C. Sperm frozen in media containing chicken or duck egg yolk had a higher proportion of intact acrosomes immediately after thawing than sperm frozen in medium containing quail egg yolk, but 6 h after thawing and maintenance at 37 degrees C the sperm that had been frozen in medium containing chicken egg yolk had a higher proportion of intact acrosomes than the sperm frozen in media containing duck or quail egg yolk. Analysis of the composition of the different yolk types showed that the basic components of the yolks were similar, but the ratios of fatty acids and phospholipid classes differed. Duck egg yolk had more monounsaturated fatty acids (MUFA) than chicken egg yolk, which had more MUFA than quail egg yolk. Duck egg yolk contained more phosphotidylinositol (PI) than chicken or quail egg yolks and quail egg yolk contained more phosphotidylserine than either chicken or duck egg yolks. The differences in post-thaw motility and acrosome integrity of boar sperm when frozen in media containing the different types of egg yolk may be due to the variation in composition. 相似文献
18.
本实验旨在探讨添加低剂量大豆卵磷脂稀释液对绵羊精液低温保存效果。实验一采用6个浓度(0%、0.25%、0.5%、0.75%、1.0%、1.25%)大豆卵磷脂替代TRIS专利稀释液中卵黄低温保存绵羊精液,在第0、1、4、7、10、12、18天检测精子活率、顶体完整率;实验二选用实验一中最优添加组(0.5%组)和TRIS专利稀释液制成粉剂低温保存绵羊精液,在保存第0、1、4、7、10、12天对精子活率和顶体完整率进行测定,并在保存第10天对绵羊进行人工授精。结果表明:实验一中,0%组从第1天精子活率低于其他组(P<0.05),0.25%组精子活率观测值从第10天开始低于0.25%以上浓度组(P<0.05),0.5%、0.75%、1.0%、1.25%组保存第10天精子活率均大于50%,0.5%组保存第18天精子活率高于1.0%、1.25%组(P<0.05);各组顶体完整率缓慢下降,各时间点均无显著性差异;实验二中,0.5%组与TRIS组在各时间点的精子活率、顶体完整率与受胎率均无显著性差异,保存第10天精子活率均高于50%;0.5%组受胎率为65.49%,略低于TRIS组67.65%(P>0.05)。本实验条件下,绵羊精液低温保存稀释液中添加0.5%大豆卵磷脂替代卵黄效果最佳。 相似文献
19.
【目的】 探究在冷冻稀释液中添加大豆卵磷脂代替10%卵黄对梅花鹿精液冷冻保存效果的影响,为梅花鹿人工授精体系的完善提供参考。【方法】 采用电刺激法采集梅花鹿精液,以精液冷冻稀释液中分别添加1%、2%、3%、4%和5%大豆卵磷脂代替10%卵黄作为试验组,添加20%卵黄作为对照组,分别进行各组精液冷冻保存。5 d后,进行精液解冻,检测解冻后各组精子的活力、质膜完整率、顶体完整率、线粒体活性、存活时间,筛选合适浓度的大豆卵磷脂。选取4~5岁健康雌性梅花鹿,肌肉注射300 IU孕马血清促性腺激素（PMSG）和0.4 mg氯前列醇钠进行同期发情处理,发情后第20 h用20%卵黄组与筛选出的大豆卵磷脂组冻精进行人工输精,输精后30 d使用B超检测仪检测妊娠情况,统计妊娠率。【结果】 与对照组相比,1%大豆卵磷脂组冻融后的精子活力、向前活动力、快速前进活力、活率、质膜完整率、顶体完整率及线粒体活性均显著提高（P<0.05）;随着稀释液中大豆卵磷脂浓度的增加,其冻融后精子活力、向前活动力、快速前进活力、活率、质膜完整率、顶体完整率以及线粒体活性呈下降趋势,精子存活时间也随浓度的增加而减少。1%大豆卵磷脂组冻融精子人工授精梅花鹿的妊娠率为61.11%,高于对照组、2%和3%大豆卵磷脂组,但差异均不显著（P>0.05）。【结论】 在梅花鹿精子冷冻稀释液中添加1%大豆卵磷脂替代10%卵黄,能有效提高梅花鹿冻融精子的质量,为进一步筛选新型梅花鹿精液冷冻稀释液提供理论基础。 相似文献
20.
Singh AK Singh VK Narwade BM Mohanty TK Atreja SK 《Reproduction in domestic animals》2012,47(4):596-600
Egg yolk-Tris is most commonly used semen extender; however, its use involves hygienic risk, interference with fertility and poor microscopic examination. Therefore, replacement of egg yolk with a plant-based component with protective effects on spermatozoa would be advantageous. In present study, we observed effect of soya milk-based extenders on dilution and liquid preservation of Murrah buffalo bull semen at 5°C up to 72 h in comparison with conventional egg yolk-Tris extender (Ext.1). In experiment one, a total of 32 buffalo semen ejaculates from four animals were extended and preserved at 5°C for 72 h in soya milk-based extender (Ext.2) with different percentages (10%, 15%, 20%, 25% and 30%) of soya milk for optimization of soya milk concentration. Semen quality was assessed for individual motility, viability, membrane integrity and acrosome integrity at 0, 24, 48 and 72 h of liquid preservation. The results of experiment one indicated that 25% soya milk is an optimum concentration for buffalo bull semen extender preparation. A modified method was used to prepare another soya milk-based extender (Ext.3). In the second experiment, two soya extenders (Ext.2 and 3) with optimized concentration (25%) of soya milk were comparatively assessed with egg yolk-Tris extender (Ext.1) for semen quality parameters at 0, 24, 48 and 72 h of liquid preservation. The individual sperm motility at 0 and 24 h following dilution were found non-significant among extenders. However, after 48 h of dilution, individual motility in Ext.3 was observed significantly (p < 0.05) higher than Ext.1. After 24, 48 and 72 h of dilution sperm membrane integrity in Ext.3 was found significantly (p < 0.05) higher than Ext.1. Overall, comparative evaluation of sperm parameters obtained revealed that Ext.3 containing 25% soya milk can be used as a substitute of egg yolk-based extender for buffalo semen liquid preservation. 相似文献