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采用进口新西兰外源激素(FSH),对波尔山羊进行超数排卵处理及手术法回收6日龄胚胎,移植于同步发情的本地种羊.纯种波尔山羊发情第14d每日递减肌注FSH 3d(总剂量10IU).其结果为超排点25个,回收胚胎23枚,胚胎回收率为92%(23/25),可用胚胎18枚.同步发情处理采用进口澳大利亚阴道栓,对10头本地山羊进行处理,9头发情,发情率为90%(9/10).对9头发情本地羊进行胚胎移植,5头受孕,受胎率55.56(5/9),其中1头流产,4头正常分娩,产下7头波尔山羊(3(↑○),4(○ )),产羔率175%(7/4). 相似文献
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对79只波尔山羊采用不同制剂FSH进行超排处理。结果:①宁波产FSH在38Iu、42Iu剂量下所获得的平均可用胚胎数(12.39±3.31)枚(38Iu)、(13.06±4.26)枚(42Iu)无显著差异(P>0.05)。②进口FSH在8mL、10mL剂量下获得的平均可用胚胎数(18.35±4.45)枚、(17.40±5.12)枚无显著差异(P>0.05)。③用进口FSH超排处理时所获得的平均排卵数、采集胚胎数、采集的可用胚胎数均显著高于国产FSH(P<0.05)。 相似文献
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用促性腺激素 FSH(280IU 和340IU)、PMSG(1000IU)对海门山羊进行超数排卵处理,并比较它们的超排效果.试验结果表明:用280IU 的 FSH 超排,排卵数平均为7.5±4.6;用340IU 的 FSH 超排,排卵数平均为8.6±6.2;用 PMSG 超排,排卵数平均为5.5.FSH 处理超排效果比 PMSG 处理效果好。FSH 组的两种剂量间的效果差异不显著(P>0.05);卵巢对激素的反应比较明显,卵泡多,卵巢体积增大.经观察,胚胎发育在发情配种后的第3天,以单细胞受精卵到2细胞阶段的胚胎趋多;第4天,以4—8细胞阶段的胚胎趋多;第5天,以16—32细胞阶段趋多;第6天,发育到桑椹胚;第7—8天,以囊胚趋多。这一结果,为海门山羊今后进行胚胎工程提供了参考价值。 相似文献
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波尔山羊重复超排FSH用量的调整方法与效果 总被引：1，自引：1，他引：0
根据218只2～5岁经产波尔山羊的第1次超排反应及回收胚胎数将第2次超排母羊分为5个组（1组只有卵泡未排卵;2组母羊处理后未发情;3组黄体数≤4个;4组黄体数5～14个;5组黄体数≥15个）,2次连续超排时间间隔60 d以上,采用递减法用FSH（Folltropin V）进行超排处理,第2次FSH给量根据第一次的超排效果进行调整。结果表明,1～5组的有效供体利用率分别为100%、75%、71.88%、93.10%和93.65%,5组有效供体比例差异不显著（P＞0.05）;1～5组的总胚胎数分别为14.00±5.73、12.10±6.78、11.77±7.26、13.84±7.04、18.03±9.06枚,5组的总胚胎数极显著高于其他4组(P＜0.01);1～5组的回收可用胚胎数分别为12.81±6.04、10.33±8.12、10.08±7.14、11.34±6.58和15.37±7.64枚,5组超排后可用胚胎数显著高于2、3、4组(P＜0.05),与1组间差异不显著（P＞0.05）。根据供体首次超排效果调整波尔山羊重复超排FSH给量方案可行,首次超排无反应或超排反应差的个体,重复超排时增加FSH给量,可以使70%以上的个体成为有效供体。 相似文献
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①弥勒红骨山羊两次超排间排卵数、回收胚胎数、回收率、可用胚数、可用胚率均无显著性差异(P＞0.05),但第2次超排后的排卵数、回收胚胎数、可用胚胎数的标准差较大,说明供体羊第2次超排效果均匀度较第1次低.②放牧+补饲和全舍饲两种养殖模式奶山羊同期发情率无显著差异(94.12％vs 88.89％)(P＞0.05),但发情受体的利用率差异显著(81.25％vs 56.25％) (P＜0.05).③放牧+补饲条件下饲养的奶山羊和圭山山羊同期发情率无显著差异(94.12％vs 84.85％) (P＞0.05),但圭山山羊发情受体的利用率较奶山羊低(57.14％vs 81.25％),差异显著(P＜0.05).④移植单胚的圭山山羊和奶山羊妊娠率、产羔率、胚胎获得羔羊的效率无明显差别,移植1～3枚胚胎的奶山羊受体,随移植胚胎数的增加,受体妊娠率逐步提高,从单胚的58.33％提高到双胚的65.22％和三胚的88.89％,母羊产羔率也显著提高,但胚胎获得羔羊的效率无明显差别. 相似文献
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布尔山羊超数排卵胚胎移植试验 总被引：2，自引：0，他引：2
本试验采用置入炔诺酮阴道栓 FSH 氯前列烯醇同期发情、超数排卵处理方法，对8只布尔山羊(供体羊)、90只洪洞奶山羊(受体羊)进行了同期发情和超排数排卵胚胎移植试验。其结果如下：(1)8只供体羊回收胚胎数量、可用胚胎数量、羊均回收胚胎数量、羊均可用胚胎数量、可用胚比率分别为182枚、172枚、22．8枚、21．5枚、94．5％；(2)90只受体羊共有81只羊达到同期发情效果，发情同期率为90．0％；(3)150枚可用胚胎共移植洪洞奶山羊73只，妊娠51只，产羔80只，妊娠率69．9％，胚胎成羔率53．5％。 相似文献
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提高波尔山羊超排效果及移植妊娠率研究初报 总被引：3，自引：3，他引：3
以波尔山羊为供体、本地白山羊及其用萨能奶山羊改良的高代杂种羊为受体,开展提高超排效果及移植妊娠率研究。结果表明:在提高超排效果研究方面,注射P4+LRH-A3组较对照组头均获胚胎数及可用胚胎的百分率分别提高5.4枚和17.7％;注射P4组、注射LRH-A3组较对照组头均获可用胚胎的百分率分别提高18.99％和14.87％。在提高受体移植妊娠率研究方面,移单胚、双胚、三胚的受体羊移植妊娠率组间差异不显著,但移三胚的受体羊产羔率较移单胚、双胚分别提高66.92％和36.09％,差异极显著;受体羊移入胚胎发育阶段相同的1枚或2枚同等级胚胎(A级或B级),妊娠率和产羔率无显著影响,但移入2枚A级囊胚受体羊的产羔率较移入2枚A级桑椹胚的产羔率高36.23％,差异显著;移植受体的一侧卵巢上有3个以上黄体的妊娠率显著高于1个黄体和2个黄体,分别高31.55％和29.23％,差异显著。移入胚胎的受体羊卵巢上黄体和卵泡同时存在,将卵泡刺破使卵泡液流失,与卵巢上只有黄体存在的受体羊移植妊娠率无显著差异;向子宫角方向和逆子宫角方向移植胚胎对受体羊移植妊娠率无显著差异。 相似文献
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使用美国产FSH,采用减量和等量2种注射方式分别对8只龙陵黄山羊进行超排.结果表明：减量注射组的排卵数、回收总数、可用胚胎数分别为14.88个±3.87个、13.25枚±4.83枚、12.63枚±5.37枚,等量注射组排卵数、回收总数、可用胚胎数分别为10.38个±3.46个、9.25枚±2.31枚、8.75枚±2.12枚,减量注射组的排卵数、回收总数均显著高于等量注射组（P＜0.05）;两组间卵巢上卵泡数、回收率、可用胚胎数、回收胚胎可用率均无显著差异（P＞0.05）. 相似文献
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22只波尔山羊供体用CIDR FSH PG 进行超排处理, 用手术法采胚,共获138枚可用胚, 头均获可用胚为6.27 ( 138/22) 枚,其中超排育成羊6只,只均回收可用胚5.50枚,经产母羊16只,只均回收可用胚6.57枚,经产羊平均回收胚胎总数高于育成羊;手术法移植78只受体羊,妊娠53只,妊娠率68.00%,产羔71只,其中产双胎的有18只受体,占妊娠总数的34.00%. 相似文献
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Beran GW 《Preventive veterinary medicine》2008,86(3-4):198-207
When early people made their appearance, zoonotic infectious diseases were already waiting, but epidemic diseases did not appear in human history until people began to live in large numbers under conditions of close contact, mainly during the last 10,000 years. Disease has decimated urban populations, conquered armies, and disrupted society. The focus here is on (1) the plague of Athens and the Black Death; (2) smallpox, influenza, and rabies; (3) avian influenza prion diseases, and foot & mouth disease; and (4) emerging and re-emerging diseases. All have veterinary public health associations. In Athens, Greece, in 430 BC, when the Spartans ravaged the countryside, hordes crowded into Athens so that orderly movements, space in which to live, and adequate supplies of food became impossible. Crowding of any population fosters disease transmission; chaos and disorder enhance it all the more. Out of northern Egypt came a terrible plague from across the Mediterranean Sea. The identity of the plague of Athens remains unsure, but the well-considered conclusion is Rift Valley Fever, a mosquito borne, viral zoonosis. The Black Death, also called the Plague, raged in Asia for centuries. In 1347, the Black Death was brought by a ship out of Asia to Sicily. The scenes of devastation were repeated throughout Europe, with 90% or more of the people dying in city after city. Influenza, too, has been a cause of periodic human epidemics, but the great pandemic of influenza occurred in the last months of World War I. In the years of highest occurrence, more than half the world's population became clinically infected. If veterinary public health had been born earlier, it could have led to elucidating the epidemiology of influenza and the plagues of Athens, Europe, and Asia. In turn, smallpox had also caused continual tragedy. In 1796, Edward Jenner began to harvest pustules of cowpox from children or infected cows and inject them into susceptible children. In 1980, the World Health Organization declared that smallpox had been eliminated from the world. Rabies, though, still strikes terror. A number of animal diseases, broadly termed emerging and re-emerging diseases, need surveillance because they have the potential to impact human health. From late in 2003 to 2007, the highly pathogenic H5N1 influenza virus in poultry infected at least 121 people and caused 62 deaths in four countries. The prion diseases, too, all have very high numbers in concentrated contacts. To control these diseases, veterinary public health is essential, with diagnosis, epidemiological surveillance, clinical manifestations, and prevention as primary measures. 相似文献
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Dekker A Dercksen D Snoep J van Wuyjckhuise L 《Tijdschrift voor diergeneeskunde》2007,132(18):695-701
On 26th of july 2007 a new case of bluetongue was notified in the Netherlands and on 2nd of august 2007 foot-and-mouth disease was diagnosed in Surrey, England, which raised the threat of having both infections simultaniously in one area. Bluetongue and foot-and-mouth disease have a different pathogenesis, but symptoms may resemble each other at a later stage of infection. The pathogenesis and possible clinical symptoms of both infections are discussed and illustrated with pictures. 相似文献
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在动物的异常行为中以刻板行为最为常见,而咽气癖又是马最常见的口部刻板行为之一。作者就咽气癖在生理方面和心智方面对马体产生的影响、行为基础、诱因的研究进展及常见的防治措施进行综述。 相似文献
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近几年,世界饲用添加剂市场增长较快,预计今后将进一步增长,据世界粮农组织(FAO)首领会议的倡议,到2015年,将使世界营养不良的人口削减一半,其间,肉制品将会以每年2％的速度增长,特别是加快猪肉和禽肉增长。这将促进世界添加剂,尤其是蛋氨酸和赖氨酸需求量的增加。 相似文献
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