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18篇 您的检索式:作者名="Kauffold"
    题名 作者 年代 出处 被引量
1利用烯丙孕素使授精未孕母猪重返预定的配种方案显示文摘为研究烯丙孕素、马绒毛膜促性腺激素(eCG)和人绒毛膜促性腺激素(hCG)或促性腺激素释放激素类似物(GnRH-A)D-Phe6-LHRH在促使诊断为未孕的高胎龄母猪同步发情同步排卵以使其重返预定的人工授精方案中的作用,特进行了一项现场研究。试验选用531头在人工授精后第21~35天期间经超声波检查确诊为未孕的母猪,并随机分入3个试验组:⑴试验Ⅰ组(EGⅠ):每头母猪按16mg/d的剂量连续15d口服烯丙孕素以阻止滤泡的生长,停服24h后肌肉注射1000IU马绒毛膜促性腺激素以刺激卵泡生长,78~80h后再肌肉注射500IU人绒毛膜促性腺激素以诱导排卵;⑵试验Ⅱ组(EGⅡ):除将烯丙孕素的剂量由16mg改为20mg和马绒毛膜促性腺激素剂量由1000IU改为800IU以外,其它与试验Ⅰ组相似;⑶试验Ⅲ组(EGⅢ):除用50μg促性腺激素释放激素类似物D-Phe6-LHRH替代500IU人绒毛膜促性腺激素来诱导排卵外,其它均与试验Ⅱ组相似。试验母猪分别在注射eCG/D-Phe6-LHRH后16h和40h各进行一次人工授精,并利用超声波扫描仪检查卵巢情况以确诊激素处理是否获得成功。记录母猪的受孕率、分娩率、总产仔数和活产仔数,并与同步发情首次配种的母猪比较。试验母猪在激素处理前卵巢结构各不相同,烯丙孕素的两种口服剂量都能使80%以上的母猪卵巢卵泡生长得到阻止,不过口服16mg/d的烯丙孕素会提高多囊卵巢变性的发生率。4%~18%的母猪经烯丙孕素处理后其卵巢中仍存在黄体,大多数母猪在2次人工授精之间或第2次人工授精之后排卵(P<0.05)。注射促性腺激素释放激素类似物(GnRH-A)D-Phe6-LHRH的母猪排卵往往早于注射人绒毛膜促性腺激素的母猪。被诊断为未怀孕的母猪受孕率和分娩率比初次交配母猪低25%(P<0.05)。在诊断为未孕的母猪中,注射促性腺激素释放激素类似物(GnRH-A)D-Phe6-LHRH的母猪受孕率较高(P<0.05),但在总产仔数和活产仔数上各试验组间无显著差异。总之,给诊断为未孕的母猪口服20mg烯丙孕素,然后肌注800IU马绒毛膜促性腺激素和50μg促性腺激素释放激素类似物D-Phe6-LHRH是诱使其同步发情和同步排卵的最佳方法,至于母猪口服烯丙孕素的时间是否一个较长的18d间隔还有待进一步的研究。张贤群 Johannes Kauffold 2008国外畜牧学(猪与禽)2008,28,1:3
2Prevalence of chlamycliae in boars and semen used for artificial insemination显示文摘Kauffold J Melzer F Henning K 2006Theriogenology2006,65,9:1
3Synchronization of es-trus and ovulation in sows not conceiving in a scheduled fixed-time insemination program显示文摘Kauffold J Beckjunker J Kanora A 2007Animal Reproduction Science2007,97,1:1
4Effects of long-term treatment with the GnRH agonist deslorelin (Suprelorin) on sexual function in boars显示文摘Kauffold J Rohrmann H Boehm J Wehrend A 2010Theriogenology2010,74,5:1
5From physical properties of ice slurries to industrial ice slurry applications显示文摘Egolf P W Kauffold M 2005International Journal of Refrigeration2005,280,:1
6Physiology and pathology of reproduction in domesticated New World camelids with special emphasis on ultrasonography显示文摘Hoops M Kauffold J 0,,03:1
7Prevalence of chla mydiae in boars and semen used for artificial insemination显示文摘Kauffold J Melzer F Henning K 2006Theriogenology2006,65,9:1
8Bagnell,Perinatal Zearalenone Exposure Affects RXFP1,RXFP2,and Morphoregulatory Gene Expression in the Neonatal Porcine Uterus显示文摘Joseph C Chen Anne A Wiley Johannes Kauffold 2009Annals of the New York Academy of Sciences2009,1160,:1
9The in vitro developmental competence of oocytes from juvenile calves is related to follicular diameter显示文摘Kauffold J Amer H A Bergfeld U 2005J Repred Dev2005,51,3:1
10Results and ex- periences of pregnancy control in swine by ultra- sonography on different days of gestation over two years显示文摘Kauffold J Richter A Sobiraj A 1997Tierarztl Prax1997,,25:1
11Relaxinlike factor (RLF) mRNA expression in the fallow deer显示文摘Hombach-Klonisch S Kauffold J Rautenberg T 2000Mol Cell Endocrinol2000,159,12:1
12Canine relaxin-like factor: unique molecular structure and differential expression within reproductive tissues of the dog显示文摘Klonish T Kauffold J Steger K 2001Bilo Reprod2001,64,2:1
13Prevalence of chlamydi- ae in boars and semen used for artificial insemination显示文摘Kauffold J Melzer F Henning K el al 2006Ther- iogenology2006,65,9:1
14Prevalence of chla-mydiae in boars and semen used for artificial insemination显示文摘Kauffold J Melzer F Henning K 2006Theriogenology2006,65,9:1
15The in vitro developmental competence of oocytes from juvenile calves is related to follicular diameter显示文摘Kauffold J Amer H A Bergfeld U 2005The Journal of Reproduction and Development2005,51,3:1
16Offspring from Non-stimulated Calves at an Age Younger than Two Month:A preliminary Report 显示文摘Kauffold J Amer H A Bergfeld U 2005Journal of Reproduction and Development2005,51,4:1
17Der einfluss unterschiedlicher PMSG-dosierungen auf die ovarreaktion sowie auf vertei lung und qualitaet der eizellen im eileiter von jungsauen nach ovulationssynchronisation显示文摘Bruessow K P Kauffold M Bergfeld J 1987Mh Vet Med1987,42,:1
18Prevalence of chlamydiae in boars and semen used for artificial insemination显示文摘KAUFFOLD J MELZER F HENNING K 2006Theriogenology2006,65,9:1
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