猪人工授精新技术

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,Title Goes Here,One or two lines as needed,猪人工授精新技术,（,美国南达科达州立大学供稿,）,施学仕 博士,美国大豆协会,-,国际项目,上海代表处,Training Boars for Semen Collection,训练公猪进行采精,Select a person who is patient and enjoys working with animals.,选择一个有耐心并乐于与动物相处的人,Begin training during the isolation process by building a trust between you and the boar.Spend a few minutes each day scratching,rubbing and talking with the boar.,训练开始于隔离过程中，这时要在操作者和公猪之间建立信任，每天花几分钟对公猪抓痒、擦拭和“对话”,Boars vary in their rate of sexual development.Some 7 mo old boars are ready to be trained and others require 4-6 wks longer.,不同公猪的性成熟速度各异，有些7月龄的公猪就可投入训练，而另一些可能要晚46周才行。,Training Boars(cont),公猪训练(续),Provide a clean,dry,well lighted area free of distractions.A breeding mat helps provide footing.A boar that slips during mounting may be shy about attempting it again.,训练场地应该清洁、干燥、光照良好且无干扰。地上铺上一个防滑垫可有助于公猪站稳，公猪在爬跨时滑倒会羞于再次爬跨,。,Keep the area about 8 x 10 ft,so that the boar is focused.,训练区域大小应在810英尺左右，以便公猪能够集中精力。,If possible,collect a previously trained boar first.The odor and sound may stimulate the“rookie,”,if he is located next to the collection area.,如有可能,先对先前接受了训练的公猪采精。令新公猪站在近旁,采精时的气味和声响会对新公猪产生刺激,Adjust the dummyso that it is equal to or slightly lower than the boar being trained.,调整假母猪的高度，使其等于或略高于训练公猪的高度。,Plan for short training sessions(15-20 min).Some boars may mount the dummy immediately but others may want to explore the pen and dummy for several session.,每次训练时间应该短些(15 20分钟)。有些公猪会立即爬跨假母猪，而有些公猪在开始几次训练中只是探究猪圈和假母猪。,Training Boars(cont),公猪训练(续),Some boars require coaxing.Crouchdown near the dummy,allow the boar to smell your hand and clothes and talk in a reassuring tone.Try pouring semen from a previous collection on the dummy.,对有些公猪需要哄骗。要在假母猪旁边蹲下，让公猪嗅闻你的手和衣服，采用使公猪安定的声调召唤公猪。,Keep the boar focused on the dummy.If needed,use winged gates to keep him in front of the dummy.,要使公猪集中关注假母猪。需要时可用,winged gate,使公猪呆在假母猪的前面。,Training Boars(cont),公猪训练(续),New Technologies,新技术,Boar semen extenders,公猪精液稀释剂,Intra-uterine Insemination,子宫内输精,Sexing of boar semen,公猪精液性别化,Cloning and embryo transfer,克隆和胚胎移植,Reasons for developing new long-term boar semen extenders,研制长效公猪精液稀释剂的原因,More favorable work hours in boar stud,增加人工授精站的有效工时,Reduction or elimination of weekend collections,减少或避免周末采精,Reduced transportation cost of semen,降低精液运输成本,Testing of semen for PRRS before shipping/using semen,可在精液运输/应用之前测试其是否受到猪繁殖和呼吸综合征病毒污染,Longer storage life of,延长精液储存时间,Fewer discards at the farm,减少猪场中精液浪费,New Long-Term Extenders,新的长效稀释剂,Non-published formula,未发表配方,Androhep EnduraGuard,Androhep EnduraGuard,Shelf-life is 9 days,有效期9天,Antibiotics,抗生素,SafeCell Plus,SafeCell Plus,Shelf-life is 9 days,有效期9天,Liquid concentrated extender,液态浓缩稀释剂,Specific blend of antibiotics,与抗生素混合,Mulberry III,Mulberry III,Shelf-life is 7 to 14 days,有效期714天,Antibiotic,抗生素,Intra-uterine Insemination,子宫内输精,Intra-uterine“body”insemination(IUBI),子宫内输精(子宫体内输精),Deep intra-uterine“horn”insemination(DIUHI),深部子宫内输精(子宫角内输精),Suggested beneficial aspects of intra-uterine body AI:,子宫体内输精的好处,Less back-flow,减少精液回流,Fewer sperm cells per dose,可减少每次输精的精子数,Smaller volume required,可减少每次输精的精液量,Less time needed to inseminate,可减少每次输精花费的时间,Less boars will be needed to produce sperm cells,公猪的头数,Genetic cost will be lower?,可降低种猪成本？,Percentage of sows inseminated that have backflow with traditional AI,传统输精法的精液回流情况,Time of backflow,精液回流,No.sows evaluated,测试母猪数,No.sows with backflow,有回流母猪数,%,of sows with backflow,有回流母猪%,During AI,输精中,120,76,63.3,0,to.5 hr after AI,输精后,00,.5,小时,112,110,98.2,.5,to 2.5 hr after AI,输精后,0.52,.5,小时,80,78,97.5,Stevernik et al.,Animal Reproduction Science 54:109-119,1998.,Proportion of total volume(80 mL)that was lost during and after traditional Ai,传统输精法,总输精量80毫升中,输精中和输精后的损失比例,Time of backflow,回流时间,No.sows evaluated,测试母猪数,Total volume lost,%,损失量%,Average,平均,Range,范围,During AI,输精中,76,7%,1,to,56%,0,to.5 hr after AI,输精后,00,.5,小时,110,31%,3,to,76%,.5,to 2.5 hr after AI,输精后,0.52,.5,小时,78,36%,1,to 94%,Stevernik et al.,Animal Reproduction Science 54:109-119,1998.,8,inches,Uterine,body,Goldenpig,DeepGoldenpig,IMV International,子宫体,深部,Goldenpig,输精管,Goldenpig,输精管,8英寸,(20.32毫米),Uterus is hostile to sperm,Traditional,placement of,sperm cells,传统方法输精法将精子置于此处,Intra-uterine,body placement,of sperm cells,Phagocytosis,细胞吞噬作用,Massive influx of,polymorphonuclear,Leucocytes,at 30 minutes,to 3 hours after spermatozoa,enter uterine horn,精子进入子宫角后30分钟到3小时，多形核白细胞大量出现,子宫不利于精子生存,新方法将精子置于子宫体内,Deep Intra-uterine Horn Insemination,深部子宫角内输精,Surgical procedure,外科手术法,Not practical for commercial use,不适合用于商业目的,Fiber optic endoscope,光纤内镜,Not practical for commercial use,不适合用于商业目的,Flexible catheter,柔软导管,Used on non-sedated,estrous,sows,用于非呆立发情的母猪,Practical for commercial use,适合用于商业目的,FirFlex Catheter,(Patented by University of Murcia),FirFlex,输精管(专利权,Murcia,大学),Marketed in Europe by MAGAPOR,(Spain,Portugal,Hungary),由,MAGAPOR,公司在欧洲销售,(西班牙，葡萄牙，匈牙利),Deep Intra-uterine“Horn”Ar