励珂健喷剂对10日龄内仔猪腹泻和免疫力的影响     

臧猛  郑声陶  谢坤 《中国动物保健》2014,(11):11-13

为研究励珂健喷剂（主要成分：杨树花提取物）对10日龄内仔猪腹泻和免疫力的影响,将18头PIC母猪随机分成3组,每组6头,分别为蒸馏水组、土霉素组和励珂健喷剂组,蒸馏水组仔猪1、3、5日龄时皮肤喷洒蒸馏水1 m L/头/d,土霉素组仔猪3、7日龄时分别肌肉注射20%长效土霉素注射液0.2 m L/头/d、0.5m L/头/d,励珂健喷剂组仔猪1、3、5日龄时皮肤喷洒励珂健喷剂1 m L/头/d。结果表明,励珂健喷剂可有效降低10日龄内仔猪的腹泻率和发病率,且励珂健喷剂组腹泻仔猪的治愈速度快于土霉素组和蒸馏水组。由此证明：励珂健喷剂对10日龄内仔猪腹泻有防治作用,并且还可以增强仔猪的免疫力。  相似文献   

猪瘟与仔猪副伤寒混合感染的诊断     

王顺飞  文明 《畜禽业》2006,(9):28-30

2006年3月，开阳县某养猪场引进的商品猪发生一种死亡率为45％的疫病，经流行病学调查、临床症状与病理剖解观察、猪瘟荧光抗体试验和细菌分离培养与鉴定，确诊本次疫病系猪瘟与副伤寒混合感染所致。  相似文献   

Effects of supplemental palygorskite instead of zinc oxide on growth performance,apparent nutrient digestibility and fecal zinc excretion in weaned piglets     

Jun M. Zhang 《Animal Science Journal》2014,85(4):435-439

The aim of this study was to determine the effects of dietary supplementation of palygorskite instead of zinc oxide (ZnO) on growth performance, apparent nutrient digestibility and zinc contents in serum and feces in weaned piglets. One hundred and sixty‐five piglets (28 days of age, 7.10 ± 0.86 kg) were allotted to five treatments on the basis of weight and sex. Each treatment included three replicates of 11 piglets. The piglets were fed the same basal diet supplemented with 0 mg/kg (control group), 1800 mg/kg, 2400 mg/kg, or 3000 mg/kg palygorskite or 2500 mg/kg ZnO for 28 days. There was no significant difference for incidence of diarrhea among the four treatments during the 0–14‐day feeding period. Compared with the control group, piglets offered diets supplemented with 1800 mg/kg palygorskite had higher (P < 0.05) average daily gain (ADG) and crude protein digestibility. Fecal digestibility of energy in 1800 mg/kg palygorskite and ZnO groups were higher (P < 0.05) than that in the control group. Both the zinc concentrations in serum and fecal zinc excretion in palygorskite groups and control group were all lower (P < 0.05) than that in the ZnO group. In conclusion, dietary supplementation with 1800 mg/kg palygorskite can improve growth performance and nutrient digestibility and can also decrease zinc excretion in feces in weaned piglets.  相似文献   

Detection of Serotypes and Virulence Factors of Escherichia coli from Piglets in Beijing     

WANG Zhen-ling  DUAN Yue-qiang  WANG Jin-qiu  WANG Yu 《中国畜牧兽医》2017,44(5):1302-1308

To investigate the cause of piglets diarrhea, and the distribution of the serotype and virulence factors of swine Escherichia coli in Beijing, 400 diarrhea samples were collected. TSA serum agar culture method was used to isolate Escherichia coli, serotype identification test and virulence factor genes test were used to verify the presence of O-antigen. 64 strains of E.coli were isolated from 400 diarrhea samples, among which 42 strains of E.coli were classified as 8 serotypes:O101(18.7%),O64(12.5%),O8(10.9%),O20(10.9%),O45(4.7%),O149(4.7%),O2(1.6%) and O89(1.6%), and the major virulence factors were STa, Stx2e, astA and eaeA. There were 8 mainly serotypes that caused piglets diarrhea in Beijing area, among which O101 serotype accounted for the highest proportion. The major virulence factors were astA and eaeA, accounted for more than 50% of all strains, STa and Stx2e accounted for more than 30% of all strains. These data would provide effective data to support the prevention and control of piglet diarrhea in Beijing.  相似文献   

Effects of Weaning on Immunity and Nutrition in Piglets     

Jin San-jun  Dong Jia-qi  Wang Li-jun  Gao Peng-hui  Diao Xin-ping 《东北农业大学学报(英文版)》2017,24(3)

The number of birth per year was an important indicator of the sow's productivity and it was related to the duration of breastfeeding.Weaning had been shown to be a stressful period.The weaning age had declined over time in order to increase sow productivity and the fact that weaning under modem-day commercial conditions inflicted stress (environmental,nutritional and psychological/social) on pigs and associated with marked changes in gastrointestinal tract (GIT) physiology,microbiology and immunology.However,the early weaning resulted in post-weaning diarrhea,mainly related to intestinal dysbiosis during this rapid adaptation to the new diet.The environment and feed had influence on physiology,gut morphology,immune system and diseases of weaned piglets.  相似文献   

新生仔猪对外源抗体的吸收及乳糖对其吸收的影响   总被引：1，自引：0，他引：1  

敖长金  侯先志  赵志恭  于志红  王海荣  周薇  杨玉芬 《动物营养学报》2001,13(4):28-33

选择48头自然分娩、3～4胎、初生重1.25～1.5kg 的大白猪(♂)×内蒙黑猪(♀)杂交F1 代新生仔猪参试。其中24头于出生后的6小时之内用人工瓶哺的方法分别饲喂0(对照组)、1、2、3、4、8g的外源PIgG ;另外24头出生后的18小时之内分别饲喂不同含量的乳糖 ,然后开始饲喂一定浓度的外源PIgG ,分别研究了生新仔猪对外源PIgG吸收及乳糖对其吸收的影响。研究结果表明 ,仔猪出生后没有吸吮初乳之前其血清中的IgG含量甚微 ,为(0.12±0.058)mg/ml;随着饲喂浓度的增加新生仔猪对外源PIgG的吸收也增加(P<0.05) ,到出生后12小时 ,仔猪血清中的IgG含量达到峰值 ,随后逐渐下降 ,下降趋势与自然哺乳仔猪血清IgG的消长规律相似。若仔猪出生后仅喂给不含PIgG的人工初乳 ,则仔猪血清中的IgG水平在出生后的72小时之内一直保持刚出生时的水平(P>0.05) ,表明在此阶段内仔猪还没有合成自身IgG的能力。仔猪出生后饲喂8g 外源PIgG ,其血清中的IgG峰值能达到22.18mg/ml ,这一值与自然哺乳情况下的峰值相比相差甚大。乳糖强烈抑制新生仔猪对外源PIgG的吸收(P<0.05) ,给仔猪饲喂10g乳糖后与对照组(水)比较 ,仔猪对外源PIgG的吸收将减少45.31 % ,而喂50g乳糖则减少92.02 %。在本试验条件下 ,乳糖浓度对新生仔猪吸收PIgG的抑制曲线为典型  相似文献   

断奶日龄对仔猪血液生理指标的影响   总被引：4，自引：0，他引：4  

张宏福  杨琳  秦加华  卢庆萍  张莉  方路 《动物营养学报》2002,14(2):37-41

选取15窝日龄相近的三元杂交仔猪 ,按14、21、28、35日龄断奶和不断奶随机分为5组 (14E、21E、28E、35E和C) ,每组3窝。主要研究断奶与不同断奶日龄对仔猪血液生理指标的影响。主要结果为 :①哺乳仔猪从21日龄后血液中白细胞水平基本稳定 ,但14日龄时血液中白细胞水平显著低于正常水平 ;21日龄前断奶可显著降低血液中白细胞数量 ,1周后迅速提高 ,但14日龄断奶仔猪直至42日龄血液中白细胞计数(WBC)仍低于正常水平。②仔猪28日龄血液红细胞计数 (RBC)、红细胞中血红蛋白浓度 (HGB)、血液血球比容 (HCT)均达到高峰值 ,RBC、HGB、HCT均不受断奶及断奶日龄影响。③哺乳仔猪14～42日龄间血液平均红血球容积 (MCV)、红血球血红蛋白量 (MCH)呈线性下降的趋势 ,断奶对MCV、MCH测值无明显影响。  相似文献   

仔猪嗅球区和球后区的细胞构筑     

黎宗强  尹开志  曾文宗 《广西农业生物科学》1992,(4)

用冰冻切片和石蜡切片、Kluver-Barrera 染色法研究了60日龄仔猪脑的嗅球区和球后区。发现猪的嗅球和副嗅球是典型的哺乳动物构造。副嗅球位于嗅球的背内侧,呈长椭圆形,长约2mm。嗅脚内的前嗅核各部细胞群的位置和形状与通过嗅球界沟的平面和嗅脚向前伸向背外侧方的位置有关。嗅脚的背外侧较长,其内的前嗅核细胞群较长;嗅脚的腹内侧较短,其内的细胞群也较短。前嗅核的细胞由分化程度较少的中、小型细胞组成。前嗅核外侧部、背侧部和内侧部与相邻的皮质连续,其细胞排列也类似于皮质的分层结构。前嗅核内侧部的浅层有前海马皮质延伸来的锥体细胞,前海马皮质在嗅脚基部的内侧形成小隆起突出于脑表面。前嗅核外部的细胞群是“C”形带状,贴于与嗅球界沟邻接的纤维束,细胞较小。  相似文献   

仔猪肺型大肠杆菌病的诊断   总被引：4，自引：1，他引：3  

胡勇  侯俊生 《家畜生态》2003,24(3):46-47

通过对60余例患病仔猪症状的观察和3例仔猪的解剖及试验化验分析，发现大通种猪场的仔猪的死亡是由肺型大肠杆菌感染所致，药敏试验结果表明该型大肠杆菌对丁胺卡那、头孢唑啉及头孢胺苄敏感，这三类药物可用于该病的治疗。  相似文献   

断奶前后仔猪十二指肠、空肠和回肠SGLT1 mRNA表达的变化及半胱胺的影响   总被引：2，自引：0，他引：2  

张磊  王丽娜  石志敏  韦习会  陈杰  赵茹茜 《农业生物技术学报》2006,14(6):850-854

研究断奶前后仔猪十二指肠、空肠和回肠SGLT1mRNA表达丰度的变化,并同时观察半胱胺对其表达的影响,从分子水平探讨半胱胺对断奶仔猪葡萄糖吸收的影响与可能的机制。新生仔猪随机分为对照组和实验组,12日龄(D12)起对照组饲喂基础乳猪料,实验组在基础乳猪料中添加120mg/kg半胱胺,两组仔猪均于35日龄断奶,每组分别于断奶前1周、断奶当天、断奶后3d、1周以及断奶后10d随机选取仔猪各6头,宰杀后采集十二指肠、空肠和回肠粘膜,采用RT-PCR方法测定钠-葡萄糖共转运载体1(sodium-glucosecotransporter1,SGLT1)mRNA表达的相对丰度。结果表明,回肠SGLT1mRNA的表达量最高,空肠其次,十二指肠最低;SGLT1mRNA在不同肠段的表达呈现截然不同的发育模式,十二指肠SGLT1mRNA表达量在45d显著上升(P<0.05),而空肠则在42和45d时显著下降(P<0.01),回肠SGLT1mRNA表达在整个实验期间无显著变化;此外,日粮添加半胱胺显著提高38d十二指肠以及42和45d空肠SGLT1mRNA表达,而对回肠SGLT1mRNA表达无显著影响。小肠SGLT1mRNA表达以及日粮添加半胱胺促进SGLT1mRNA表达的作用均呈现时空特异性规律。  相似文献