鸭疫里默氏杆菌病及其防治体会

鸭疫里默氏杆菌病,亦称鸭传染性浆膜炎,是由鸭疫里默氏杆菌引起的主要危害雏鸭的一种接触性传染病。近几年来,由于养鸭业快速发展,该病的发生日趋严重。该病主要侵害雏鸭,病鸭主要有精神不振、拉黄白或白绿色稀粪、共济失调等临床症状及纤维素性心包炎、肝周炎、气囊炎等病理变化。雏鸭一旦感染发病后,如果处置措施不当,     

鸭疫里默氏杆菌病防治

正1流行病学鸭疫里默氏杆菌病是强传染性、高死亡率的细菌性传染病,多见于1～8周龄雏鸭,2～3周龄雏鸭发病风险较高,成鸭发病较少。鸭疫里默氏杆菌病多发于春夏、秋冬交替时节,当环境改变,雏鸭免疫力低下时,其易发生鸭疫里默氏杆菌病。鸭疫里默氏杆菌病传播途径较多,病菌可通过种蛋、呼吸道及饮水、饲料等传播。     

雏鹅感染鸭疫里默氏杆菌病的诊治与体会

鸭疫里默氏杆菌病,亦称鸭传染性浆膜炎病,是由鸭疫里默氏杆菌引起的主要危害雏鸭的一种接触性传染病。病鸭往往表现为精神萎靡不振,食欲减退或废食,拉黄白色或白绿色稀粪,共济失调等临床症状及纤维素性心包炎、肝周炎、气囊炎等病理变化。该病主要侵害雏鸭,是当前危害养鸭业的重要传染病之一。雏鸭感染鸭疫里默氏杆菌病在实际生产中较多见,有关诊治报道不时见于报端,但雏鹅感染该病报道则相对较少。     

中西药结合治疗鸭疫里默氏杆菌病

鸭疫里默氏杆菌病又称鸭传染性浆膜炎,是由鸭疫里默氏杆菌侵害雏鸭所引起的一种细菌性传染病.感染鸭以纤维素性心包炎、肝周炎、气囊炎、干酪样输卵管炎和脑膜炎为特征.由于该病的高死亡率,高淘汰率,已成为养鸭业经济损失的重要疫病之一.     

鸭传染性浆膜炎疫苗的研究进展

鸭传染性浆膜炎是由鸭疫里默氏杆菌(Riemerella anatipestifer,RA)经呼吸道、皮肤等途径感染1-8周龄雏鸭引起的急性或慢性败血性疾病.临床上主要以头颈歪斜、腿翅瘫痪、共济失调、纤维素性心包炎、肝周炎、气囊炎、胸膜炎、结膜炎以及干酪性输卵管炎为特征,死亡率较高,耐过雏鸭生长性能、饲料报酬低下[1].     

鸭传染性浆膜炎的诊治

鸭传染性浆膜炎,又称鸭疫里默氏杆菌病,是一种由鸭疫里默氏杆菌引起的主要侵害小鸭的传染病,多发生于2～7周龄的雏鸭,常引起小鸭的大批发病和死亡,在病变上以纤维素性心包炎、肝     

鸭传染性浆膜炎的诊断与防治

鸭传染性浆膜炎又名鸭疫里默氏杆菌病,是由鸭疫里默氏杆菌引起的一种接触传染性疾病,该病呈急性或慢性败血症,其特征是纤维素性心包炎、肝周炎、气囊炎、干酪性输卵管炎和脑膜炎。也可发生无任何临诊症状的呼吸道感染。感染鸭极度消瘦,死淘率高,给养鸭业造成严重的经济损失。1材料与方法1.1 发病情况某鸭场进养一批雏鸭,20日龄时鸭子开始发病,主要表现为精神沉郁,流眼泪和流鼻液,呼吸困难,轻度咳嗽,打喷嚏,饮食欲逐渐废绝,排绿色稀粪,共济失调,有的瘫痪,发病后3～4d死亡,死亡率达20%。1.2 病理变化剖检病死鸭可见纤维素性心包炎、肝周炎,肺…     

鸭疫里默氏杆菌病的诊疗方案

正鸭疫里默氏杆菌病是由鸭疫里默氏杆菌引起的主要侵害雏鸭的一种慢性或急性败血性传染病,又称鸭传染性浆膜炎、鸭疫综合征等。该病多发生于1~8周龄的小鸭,雏鸭以眼和鼻有分泌物、腹泻、共济失调、头颈震颤和抽搐等为主要症状,慢性病例表现为头颈歪斜。病理变化为纤维素性心包炎、肝周炎、气囊炎、脑膜炎及眼结膜炎等。本病极易与大肠杆菌病、禽霍乱、沙门氏杆菌病及葡萄球菌病等混合感染,造成死亡率增高。目前本病已成为危害养鸭业的重要传染病。     

一起鸭浆膜炎的诊治

鸭浆膜炎病又称鸭疫里默氏杆菌病,是由鸭疫里默氏杆菌引起的主要侵害雏鸭的一种接触性传染病。该病以咳嗽、下痢、瘫痪、共济失调、头颈震颤为主要症状。剖检以纤维性心包炎、肝周炎、气囊炎、腹膜炎为主要病理变化。雏鸭的死亡率为5%～80%,耐过的鸭生长迟缓,严重威胁养鸭业的发     

一例鸭传染性浆膜炎病原的分离与鉴定

鸭传染性浆膜炎也被称为鸭疫里默氏杆菌病,是由鸭疫里默氏杆菌(Riemerella anatipestifer,RA)感染家鸭、野鸭而引起的一种急性、败血性传染病,该病以纤维素性心包炎、肝周炎、气囊炎等为主要病理特征,感染鸭多出现食欲废绝、精神不振、站立不稳等神经症状,严重阻碍病鸭的生长。鸭疫里默氏杆菌主要感染1~8周龄雏鸭,其中尤以10~30日龄的雏鸭最为易感,近年来随着我国鸭饲养量的不断增加,鸭传染性浆膜炎发病率和死亡率均呈现逐步上升的趋势,有研究发现一旦感染鸭群发病率可高达70%,死亡率可高达80%,因此鸭传染性浆膜炎是危害当前养鸭业的主要细菌性传染病之一。     

The influence of the width of the saddle tree on the forces and the pressure distribution under the saddle

As there is no statistical evidence that saddle fit influences the load exerted on a horse's back, this study was performed to assess the hypothesis that the width of the tree significantly alters the pressure distribution on the back beneath the saddle. Nineteen sound horses were ridden at walk and trot on a treadmill with three saddles differing only in tree width. Kinetic data were recorded by a sensor mat. A minimum of 14 motion cycles were used in each trial. The saddles were classified into four groups depending on fit. For each horse, the saddle with the lowest overall force (LOF) was determined. Saddles were classified as "too-narrow" if they were one size (2 cm) narrower than the LOF saddle, and "too-wide" if they were one size (2 cm) wider than the LOF saddle. Saddles two sizes wider than LOF saddles were classified as "very-wide". In the group of narrow saddles, the pressure in the caudal third (walk 0.63 N/cm(2)+/-0.10; trot 1.08 N/cm(2)+/-0.26) was significantly higher compared to the LOF saddles (walk 0.50 N/cm(2)+/-0.09; trot 0.86 N/cm(2)+/-0.28). In the middle transversal third, the pressure of the wide saddles (walk 0.73 N/cm(2)+/-0.06; trot 1.52 N/cm(2)+/-0.19) and very-wide saddles (walk 0.77 N/cm(2)+/-0.06; trot 1.57 N/cm(2)+/-0.19) was significantly higher compared to LOF saddles (walk 0.65 N/cm(2)+/-0.10/ 0.63 N/cm(2)+/-0.11; trot 1.33 N/cm(2)+/-0.22/1.27 N/cm(2)+/-0.20). This study demonstrates that the load under poorly fitting saddles is distributed over a smaller area than under properly fitting saddles, leading to potentially harmful pressures peaks.     

Monitoring of the mare during the perinatal period at the clinic and in the stable

Complications in late gestation are challenging problems for the equine clinician and are causes of considerable distress to owners. Health problems in a pregnant mare in each stage of gestation can adversely affect the pregnancy. It is important to obtain a thorough history and perform a detailed and systematic examination of the pregnant mare so that the mare may be classified as normal or high-risk. However, even after a thorough examination, practitioners may face problems with the interpretation and assessment of risk. Normal mares should foal in the stable or pasture. Mares classified as having a high-risk pregnancy need to be monitored precisely for signs of oncoming foaling with attendance of trained personnel when labour begins. A valuable method for monitoring of the high-risk mare is assessing fetoplacental well-being. Fetoplacental well-being is most accurately assessed with ultrasonography as well as several available hormone profiles. We are proposing our scoring system of the mare's health, which may be useful in the assessment of risk during pregnancy and help clinicians to decide whether sending the mare to the clinic is reasonable or unnecessary.     

中国饲料工业协会第五届理事会顾问、会长、常务副会长、副会长、秘书长、副秘书长、常务理事、理事名单

顾问刘中一张德邻宋瑞祥聂振邦张子仪戎易王维四会长白美清国务院原副秘书长、第四届理事会会长常务副会长(8人,以姓氏笔划为序)刘永好新希望集团董事长、第四届理事会副会长刘汉元通威股份有限公司董事长、第四届理事会副会长陈丹广东恒兴集团股份有限公司董事长、第四届理事会副会长张延喜农业部原副部长、第四届理事会副会长吴明夏湖南正虹科技发展股份有限公司董事长、第四届理事会副会长陶一山唐人神集团股份有限公司董事长、第四届理事会副会长温鹏程广东温氏食品集团有限公司董事长、第四届理事会副会长谭竹洲原化学工业部副部长、第…     

鸡胆囊交感节后神经元的定位研究

为了找出支配鸡胆囊交感节后神经元的分布规律,选用体重1.5 kg～2.5 kg的成年母鸡6只,将CT-HRP溶液注入胆囊壁,动物存活3 d～4 d后,经左心室灌流固定,取内脏神经节、肾上腺神经节以及双侧胸、腰和荐段交感干神经节,制成50 μm的连续冰冻切片,TMB法呈色反应,置明视野显微镜下观片统计.结果发现,支配鸡胆囊的交感传出神经元胞体位于内脏神经节(占41.1%)、肾上腺神经节(占40.5%)和T2～T7交感干神经节(占18.4%),在交感干神经节中标记细胞的峰值位于T5、T6交感干神经节.所有的标记细胞以位于右侧的占优势.     

Harnessing the genetic toolbox for the benefit of the racing Thoroughbred

The understanding and application of genetics have grown extremely quickly since it has become possible to sequence the whole genome of an organism. The human genome sequence was completed in 2001 and that of the horse in 2007. The significance of this is that it makes it more feasible to explain how both genetically simple and complex traits are transmitted from one generation to the next and, therefore, to make informed breeding decisions, modify how horses are managed and trained to minimise the risk of disease and injury, and improve methods of prevention, diagnosis and treatment of many conditions. The science of genetics/genomics will continue to grow internationally, limited only by the funds available. The application of the science to man, horses and other species raises very complex moral and commercial issues. Thoroughbred breeders are perceived by some as resistant to change, but their apparent intransigence is often based on a genuine concern for the integrity of the breed. By taking control of the application of the advances in genetics, the Thoroughbred industry potentially has the opportunity to improve both the health and performance of Thoroughbreds. If, however, the science is applied in an uncoordinated manner, driven by commercial interests with no underlying concern for the horses themselves, there is a very real risk that breeders, the Thoroughbred breed and individual horses will all suffer as a consequence.     

犊牛腹泻与肠道菌群的变化

本文检测腹泻犊牛的直肠内8种主要正常菌群的变化,并与健康犊牛进行对比。结果发现,犊牛腹泻时,大肠杆菌、双岐杆菌和乳杆菌变化较大,而其它菌群变化较小。腹泻或将腹泻时,大肠杆菌数增加,双岐杆菌和乳杆菌数下降。腹泻康复或即将康复时,大肠杆菌减少,双岐杆菌、乳杆菌数增加。     

商品猪胴体性能对分割销售后效益的影响

试验以深圳某集团销售外三元商品猪为研究对象,分析了商品猪不同胴体性能对分割销售效益的影响.结果表明,销售完成率与胴体背膘厚呈正相关,不同背膘厚的销售完成率差异极显著(P<0.01);销售完成率与胴体重呈正相关,不同胴体重的销售完成率差异显著(P<0.05);销售毛利率与胴体背膘厚呈正相关,不同背膘厚的销售毛利率差异极显...     

陕北白绒山羊繁育中心羊场绒山羊日粮的评价

试验选择陕北白绒山羊繁育中心羊场的成年健康母羊（怀孕前期）16只,育成母羊13只,育成公羊13只,空腹称重。测定每只羊1d的采食量,计算其摄入的营养成分含量,并与原苏联绒用山羊饲养标准比较,进行饲养水平评价。结果显示,与饲养标准比较,陕北白绒山羊繁育中心羊场的育成母羊代谢能高2．68MJ,粗蛋白低59．29g,钙低3．00g,磷低1．52g;育成公羊代谢能高3．47MJ,粗蛋白低81．92g,钙低4．42g,磷低2．62g;成年母羊代谢能高2．51MJ,粗蛋白低91．33g,钙低3．09g,磷低1．93g。结合羊的体况综合评价饲养水平基本合理,但尚需要按饲养标准增加粗蛋白、钙、磷等营养物质的供给量。     

Evidence for the non-involvement of the uterus in the lifespan of the corpus luteum in the cyclic dog

Progesterone levels in peripheral blood of dogs were analysed during the cycle in which hysterectomy (n = 5) or sham surgery (n = 3) was performed as well as during the cycle of dogs (n = 5) hysterectomized at least one year prior to this study; the data were compared with the findings in control dogs (n = 3). The averages of the duration of the luteal period observed in the three experimental groups were not significantly different from those of control dogs. Immediately after surgery, the progesterone level decreased from 25 to 50% of the presurgical level, but returned to presurgical level in about four days. Prolactin levels were elevated for about 30 h after surgery. Nevertheless, the averages of the mean prolactin levels for each animal during the luteal period of the experimental groups were not significantly different from those of control dogs. It is concluded that in the dog, the uterus is not involved in the lifespan of the cyclic corpus luteum.