胚胎移植绵羊剖腹产手术

自 2 0 0 0年以来 ,我们在牡丹江龙大种羊场进行了优质肉羊胚胎移植工作 ,在接产时发现由于母绵羊骨盆狭窄 ,胎儿发育过大导致难产 ,造成初生羔羊窒息死亡。为解决这一难题 ,自 2 0 0 1年开始对部分胚胎移植羊实施剖腹产手术 ,取得了一定的效果。现将手术经验介绍如下。1　剖腹产手术适应症有下列症状的母羊应采取剖腹产术来保证母羊和胎儿的生命 :胎位、胎向、胎儿姿势正常 ,但胎儿过大 ,患羊大多是未经生产的年青母羊 ;产道狭窄 ,用手伸入阴道也无法将胎儿拉出 ;母羊阵缩微弱 ,子宫颈口狭窄 ,经药物促产无效 ;母羊拱背 ,起卧不安 ,精神沉…     

安格斯肉牛胚胎移植试验

应用胚胎移植技术，对当地9头母牛进行了安格斯肉牛胚胎的移植试验，结果受胎4头，受胎率为44．4％。     

安格斯肉牛胚胎移植试验报告

〔目的〕为探讨和研究安格斯肉牛胚胎移植在武威市的应用前景,指导我市的高档肉牛养殖,〔方法〕我们以西杂母牛为受体,进行了10头安格斯双胚、6头输精后7天移植单胚、389头单胚、10头移植前注射黄体酮和促黄体素a3共4项试验研究。〔结果〕双胚移植受孕2头,产犊结果都为单胎;移植加输精0头、单胚移植受孕率为16.8%、注射激素受孕率为10%。〔结论〕使用体内胚胎,加强妊娠牛的饲养管理,可能会提高产双犊几率,在以后生产中可以推广和应用;输精后牛各项激素和生殖受孕环境发生变化不适合于胚胎移植,在生产中利用不大;胚胎移植同步注射黄体酮和促黄体素a3在提高牛体外胚胎妊娠率的利用中作用不大。     

牛剖腹产手术

牛难产是兽医产科临床工作中常见病之一。近年来,我国大部分地区推广牛品种改良,用本地黄牛作为母体移植国外优良品种牛的胚胎。本地黄牛与国外牛存在一些个体差异,导致大部分胚胎移植的牛发生难产。2006年7月8日,笔者在贵州省贵阳市花溪区某农户家成功做一例剖腹产。该农户的黄牛是移植了西门塔尔牛的胚胎,用手伸入阴道检查发现胎儿过大,胎位不正,经助产无效。经畜主同意采取剖腹产手术。其过程如下。1临床症状患牛拱背,鸣叫,不安,精神沉郁,回头望腹,努责,极度痛苦。2手术方法2.1术前准备⑴手术器械及材料手术刀,手术剪,缝针,止血钳,持针钳…     

胚胎移植安格斯种公牛在鄂西北地区的适应性观察

从2001年2月～2004年10月,湖北省安格斯种牛场对胚胎移植出生的安格斯种公牛的生长发育、对环境的适应性、外貌等级、疫病抵抗力、采精性能进行了观察、记录和测定.结果表明,胚移后的安格斯种公牛对鄂西北地区的环境条件是可以适应的.     

胚胎移植安格斯种公牛在鄂西北地区的适应性观察

从2001年2月~2004年10月,湖北省安格斯种牛场对胚胎移植出生的安格斯种公牛的生长发育、对环境的适应性、外貌等级、疫病抵抗力、采精性能进行了观察、记录和测定。结果表明,胚移后的安格斯种公牛对鄂西北地区的环境条件是可以适应的。     

胚胎移植牛剖腹产术

南阳市黄牛科技园自1996年以来进行了皮埃蒙特、德国黄牛等肉用品种的胚胎移植工作,在实际操作过程中发现,由于肉用品种犊牛个体较大,初生体重大,臀部较宽,所以难产率高,容易造成初生犊牛窒息死亡,为解决这一技术难题,自1996年起,开始对胚胎移植待产母牛实施剖腹产术,现将该手术经验介绍如下:     

安格斯种牛杂交改良本地黄牛效果

对湖北胚胎移植出生的安格斯种牛的生长发育、生理指标、外貌等级、疫病抵抗力、公牛采精性能、母牛的繁殖性能进行了饲养观察、记录和测定。结果表明,胚移后的安格斯牛对湖北地区的环境条件是能够适应的,可以作为全省的杂交改良的父本来推广。     

猪剖腹产手术在兽医临床中的应用

分娩过程是否正常,取决于产力、产道和胎儿三个因素。这三个因素是互相适应、相互影响的,如果其中任何一个发生异常,不能适应胎儿的排出,就会使分娩过程受阻,造成难产。母猪由于阴道脱出,羊水已破,产期已到,胎儿阻塞于子宫颈口,人工助产无效采取剖腹产手术,抢救胎儿保证母子安全。现将该病例报告如下:1病史调查及临床检查笔者于2005年7月14日接诊该病例,此母猪已饲养5年,产仔11胎,本次是第12胎,从产第8胎以后,母猪易便秘,每胎产仔在12-16头之间。7月12日晚上猪食欲减少,7月13日早上母猪不食,烦躁不安,频繁起卧,拉窝,胎动明显,直到下午4时未…     

甲硝唑在乳牛临床上的应用

甲硝唑(Metronidazole)又称甲硝基羟乙唑,甲硝哒唑,灭滴灵。该药作为人医口服抗滴虫药于二十世纪五十年代末用于临床,后又发现对阿米巴病和兰氏贾第鞭毛虫病有良好效果。1962年发现该药有抗厌氧菌作用未引起人们注意,直至近几年来才引起重视,据实验室与临床试验报导,该药对各种厌氧菌感染有良好防治效果。不引起耐药菌株、不引起菌群失调与二重感染与常规抗生素合用无拮抗作用,广泛应用于阑尾坏死,穿孔;结肠、子宫切除;剖腹产等手术前后用本品栓剂或片剂,能有效的预防感染发生,对腹腔感染及由此引起的败血症、脓毒血症、厌气性坏疽、厌氧菌…     

饲料添加剂在奶牛营养和管理中的应用

饲喂高产奶牛继续挑战奶牛场主和营养学家。随着牛奶价格和饲料成本的不断改变．奶牛场的利润也在改变。饲料成本是生产牛奶的最大投入成本(估计占35％-50％)。成功的饲养计划目标是：使产奶量最佳化；生产合乎要求的乳成分；使瘤胃微生物产量最大化；刺激干物质采食量；产生乳腺合成的主要养分。饲     

不同方法制备鸡胚成纤维细胞的比较试验

采用传统法、半胚法和全胚法制备鸡胚成纤维细胞(CEF)单层。结果表明:在同等条件下,均以成纤维细胞为主,并伴有少量的上皮细胞,仅有全胚法含有极少量的肝细胞;培养时细胞贴壁和生长状况无明显差异,其产量稍有差异(全胚法>半胚法>传统法)。     

Anaesthesia for Caesarean section in the dog and cat: A review

Literature concerning anaesthesia for Caesarean section in the dog and cat is reviewed. The maternal and foetal requirements for a successful method of anaesthesia are discussed with reference to general anaesthesia, regional anaesthesia, neuroleptanaesthesia and dissociative anaesthesia. A method for evaluating the technique used is described.     

Caesarean section in sows anesthetized with Azaperone and Metomidate (author's transl)]

213 caesarean sections and 157 hysterectomies were carried out in gilts and sows with different body weight (table I). The neuroleptic Azaperone and the hypnotic Metomidate were used for anaesthesia with different administration (table II). Local analgesia and premedication with Atropine. The duration of the anaesthesia was 45 minutes and where prolongation was necessary, Metomidate, Azaperone or barbiturates were used alone or in combinations once or more. The indications (table III) for caesarean section were retarded birth in 70 sows, dislocation of uterus in 74 sows and in 69 sows by other indications. Hysterectomy was indicated by retarded birth in 93 sows, dislocations of uterus in 40 cases and in 24 cases by other indications. In 183 operations (table IV) 1006 living piglets were delivered, and 703 were alive at discharge (70%). The chances of survival depends on the composition of the litter, in litters of piglets alive only, 76% survived at discharge; in litters consisting of both alive and stillborn 69% survived and 59% survived in litters consisting of piglets alive and post mortem piglets. The total survival of the sows was 78%, 80% after caesarean section and 76% after hysterectomy. It is pointed out that most of the patients operated were in a very late phase of birth.     

广西波尔山羊胚胎移植试验研究初报

利用FSH CIDR方法对6只波尔山羊进行了超数排卵的试验研究.结果表明:有5只羊出现超排反应(83.3%),共收集胚胎40枚(8枚/只),其中可用胚为35枚(7枚/只).单或双鲜胚移植受体母羊25只,其中有12只母羊怀孕(48%),妊娠期间有1例流产, 最后产羊羔12只(其中1例为双羔),产羔率为48%.     

Caesarean section in the Java monkey (Macaca irus)—a case report

A case of Caesarean section in the Java monkey (Macaca irus) carried out under ketamine chloride anaesthesia, is described. Approach to the foetus was made through the linea alba and a longitudinal incision in the uterine body. Comparative uterine and placental anatomy of significance for evaluating operative technique is described.     

Radiographic assessment of pulmonary fluid clearance and lung aeration in newborn calves delivered by elective Caesarean section

The aim of this study was to develop a radiographic standard for the assessment of pulmonary fluid clearance and lung aeration in newborn calves. Caesarean‐delivered mature calves (n = 9) underwent lung assessment by thoracic radiography as well as arterial and venous blood gas analysis within the first 30 min, 1, 2, 3, 6, 12 and 24 hr after birth. The results indicated that newborn calves delivered by elective Caesarean section suffered from a physiological combined respiratory and metabolic acidosis with the dominance of respiratory acidosis, and an improvement in these conditions was recorded within 24 hr after birth. Concerning the radiographic results, clear lung fields, improvement in lung expansion, air content of the lung and absence of lung opacification occurred within 24 hr of birth. Furthermore, the ventral lung quadrant showed an improvement in radiographic opacification and lung expansion earlier than the dorsal lung regions. The findings of this study support the potential role of thoracic radiography in the assessment of pulmonary fluid clearance and lung aeration in newborn calves.