替米考星对猪传染性胸膜肺炎的治疗试验   总被引：13，自引：3，他引：10  

周绪正  张继瑜  李剑勇  李宏胜  李金善  徐忠赞 《动物医学进展》2005,26(6):84-88

为了解替米考星对猪传染性胸膜肺炎的疗效并为临床应用该药提供科学依据,将60头仔猪分为6 组(替米考星高、中、低剂量组及健康、感染和土霉素3 个对照组)进行人工感染试验。结果表明,国产替米考星拌料给药对治疗猪胸膜肺炎放线杆菌病具有明显的效果,可降低死亡率,提高成活率,减少人工感染引起的病理损伤;替米考星中、高剂量组(200 mg/kg饲料、400 mg/kg饲料)疗效尤为显著,因此临床治疗推荐剂量为200 mg/kg饲料,连用7 d。  相似文献   

日粮中添加燕麦青干草对互助八眉二元母猪初生仔猪器官发育的研究     

梁晓兵  侯生珍  杨葆春  吕凯 《畜牧与兽医》2013,45(9)

本试验旨在研究日粮中添加燕麦青干草粉对互助八眉二元母猪初生仔猪器官发育的影响.选取40头体况和胎次相近的互助八眉二元母猪作为试验动物,随机分为高纤维组、中纤维组、低纤维组和对照组(妊娠前期饲粮粗纤维水平分别为13.96％、11.02％、7.83％和4.33％,妊娠中期饲粮粗纤维水平分别为11.93％、9.26％、6.38％和4.33％).结果表明:1)肝脏指数高纤维组和中纤维组分别显著高于对照组(P＜0.05),脾脏指数处理组极显著高于对照组(P＜0.01);2)消化器官指数:胰脏指数高纤维组极显著高于对照组(P＜0.01),中纤维组显著高于对照组(P＜0.05);小肠指数高纤维组极显著高于对照组(P＜0.01),中纤维组、低纤维组和对照组无显著差异(P＞0.05);3)其他器官指数:心脏指数处理组极显著高于对照组(P＜0.01),肾脏指数高纤维组和中纤维组均显著高于对照组(P＜0.05);4)初生仔猪生产性能:对照组初生仔猪个体重最大,与中纤维组无显著差异(P＞0.05);初生产仔数、初生产活仔数高纤维组和中纤维组极显著高于对照组(P＜0.01);初生窝重中纤维组表现最好,显著高于对照组(P＜0.05).综合分析认为,中纤维组母猪日粮(妊娠前期11.02％、妊娠中期9.26％)可显著促进初生仔猪器官的发育,并改善初生仔猪的生产性能.  相似文献   

Selection potential of different prolificacy traits in the finnish landrace and large white populations     

T. Serenius  M.-l. Sevón-aimonen  A. Kause  E.A. Mäntysaari  A. Mäki-tanila 《Acta Agriculturae Scandinavica, Section A - Animal Sciences》2013,63(1):36-43

Heritabilities and genetic correlations for different prolificacy traits were estimated to assess possibilities of selection for high number of piglets weaned. Three litter-size traits: total number of piglets born (TNB), number of piglets born alive (NBA), number of piglets weaned (NW); four piglet survival traits: number of stillborn piglets (NSB), percent of stillborn piglets (NSB%), piglet mortality between birth and weaning (PM), percent of dead piglets during suckling (PM%); and three traits measuring time intervals: age at first farrowing (AFF), first farrowing interval (FFI), and gestation length (GL) were analysed. The Finnish national litter recording scheme provided data on the first parity litters of 11 329 Landrace and 8 362 Large White pigs born between 1986 and 2000. The heritabilitiy estimates were moderate for AFF and GL (0.24–0.37), and low for all the other traits (0.03–0.11). The genetic correlations between TNB and PM (0.68 in Landrace and 0.43 in Large White) and between NBA and PM (0.64 in Landrace and 0.31 in Large White) suggest that selection only for high TNB or NBA will lead to increased PM. The results showed further that GL will increase indirectly if the selection pressure is for low PM (r _g =?0.050 in Landrace and ?0.43 in Large White.  相似文献   

Sow performance and maternal behaviour in organic and conventional herds     

A. Wallenbeck  G. Gustafson  L. Rydhmer 《Acta Agriculturae Scandinavica, Section A - Animal Sciences》2013,63(3):181-191

Abstract

The study evaluates the first three parities of 144 Swedish Landrace×Yorkshire sows from three certified organic and three conventional commercial piglet-producing herds. Sows and litters were weaned at seven and five weeks post partum (pp) in organic and conventional herds, respectively. Herdsmen judged sow behaviour and maternal ability at farrowing, two weeks pp and at weaning. Herdsmen collected registrations of litter size, litter weight and sow fat status at farrowing and at weaning. Piglet mortality and oestrous signs were registered continuously during the nursing period. Sows in organic herds were scored to be more cautious among piglets, and to have better nursing behaviour and maternal ability in early lactation than sows in conventional herds. Piglet mortality was higher in organic than in conventional herds. Oestrus during lactation was only observed among sows in organic herds, and sows showing oestrus during lactation were fatter at weaning.  相似文献   

Effects of feeding bamboo vinegar and acidifier as an antibiotic substitute on the growth performance and intestinal bacterial communities of weaned piglets     

H. F. Wang  K. Gao  C. Wang  W. M. Zhang  J. X. Liu 《Acta Agriculturae Scandinavica, Section A - Animal Sciences》2013,63(3):143-150

Abstract

The experiment was designed to evaluate effects of feeding bamboo vinegar (BV) and acidifier to substitute antibiotic on the growth performance and intestinal bacterial communities of weaned piglets. Three hundred and sixty weaned piglets (body weight (BW) = 10 ± 2 kg) were allocated into three treatments for 25 days of experiment feeding, with three replicates (pen) per treatment. A basal diet was added with antibiotics (Control), 0.4% BV and 0.25% acidifier I (BVAI), or 0.4% BV and 0.25% acidifier II (BVAII), respectively. No significant differences were observed in feed intake, final weight, average daily gain and feed to gain ratio (P > 0.05) among different treatments. The species richness and bacterial community diversities in feces were higher for the pigs in treatment BVAI and BVAII than those of pigs in the Control (36.5 and 1.55, respectively), with a significant difference between BVAII and the Control (P < 0.05). The bacterial communities of pigs in BVAI and BVAII clustered together, forming a cluster we designated as Cluster C and separated from another cluster in pigs fed antibiotic designated as Cluster A in the Control treatment. The results indicate that the 0.4% BV and 0.25% acidifier can replace antibiotics in the diets for piglets without negative effects on production and allow for greater diversity of the intestinal bacterial community compared to antibiotics.  相似文献   

Specific and non‐specific immunity of piglets from sows fed diets containing specific fatty acids in field conditions     

G. Benzoni  F. Foresti  I. L. Archetti  G. Coceva  A. Guyonvarch  L. Alborali 《Journal of animal physiology and animal nutrition》2013,97(5):996-1005

The transfer of passive immunity from sows to piglets is important and it is the first immune protection of the new born piglet. Improving sows immunity by adding immuno‐stimulating product in sows diet can positively affect colostrum composition and transfer of immune molecules to piglets. The aim of the current study is to evaluate the benefit of a different solution, made of specific fatty acids from marine origin that have been used in human medicine for decades, for sows and piglets. Two trials were conducted in commercial farm, involving 240 sows at different periods of the year. Sows were divided in a control group, without supplementation, and a test group, supplemented with the feed additive from the 90th day of gestation to weaning. Sows body condition, piglets viability and growth were recorded. Milk immunoglobulin content was measured, as well as Aujeszky antibodies in sows and piglets blood as marker of specific immunity, and blood bactericidal activity, complement activity and lysozyme as markers of non specific immunity. No effect of the product was observed on piglets zootechnical criteria and specific immunity parameters but significant improvement of piglet non specific immunity, was observed. No difference was observed neither in the piglets blood PRRSV and PCV2 antibodies and viruses nor in Aujeszky antibodies. Blood complement activity seems to be an accurate indicator of immuno‐stimulating additive efficiency. Giving alkyl‐glycerol fatty acids to sows in late gestation and lactation can improve the passive immunity transfer to piglets.  相似文献   

腹泻仔猪肠道菌群的ERIC-PCR指纹图谱分析     

张振仓  杨二帅  郭抗抗 《西北农林科技大学学报(自然科学版)》2019,47(1):31-38

【目的】分析腹泻仔猪周围环境菌群变化规律,为仔猪腹泻的诊断和治疗提供支持。【方法】采集健康对照和腹泻仔猪粪便、口腔以及产床和母猪乳头等样品,采用ERIC-PCR技术分析其菌群结构特征,并对粪便样品中的细菌进行分离和鉴定。【结果】对照组4类样品细菌ERIC-PCR指纹图谱十分相似,腹泻组各类样品之间电泳条带差异较大,出现了异常亮度的电泳条带,与对照组优势条带位置不同,其中口腔和母猪乳头部位电泳条带数显著低于对照组(P0.05),菌群多样性指数降低,优势度指数升高。从粪便样品中分离出2株可疑菌株b1和b2,细菌染色和生化试验初步证明分离株b1和b2分别符合大肠杆菌和奇异变形杆菌的特征;利用ERIC-PCR技术分析分离株b1和b2的指纹图谱,发现分离优势细菌的ERIC-PCR指纹图谱包含于粪便样品的ERIC-PCR图谱中,证明样品的ERIC-PCR指纹图谱能够反映出优势菌群的特征;测序结果显示,分离株b1与大肠杆菌基因组同源性为99%,分离株b2与奇异变形杆菌基因组同源性为98%。【结论】腹泻仔猪周围环境菌群发生明显变化,ERIC-PCR技术可以快速、准确地监测和诊断菌群结构的变化,有助于细菌性仔猪腹泻的诊断和治疗。  相似文献   

中药添加剂对高温下猪血清抗氧化功能的影响   总被引：3，自引：0，他引：3  

宋小珍  王占赫  毛帅  刘凤华  王恬 《畜牧与兽医》2008,40(5):5-8

为探讨中药添加剂对高温应激仔猪抗氧化功能的调控效果,选用35日龄中国实验用小型猪64头,分为对照组、应激组和2个中药添加剂组(方1、方2),分别于试验第1,2,4,6,10天采血清,测定超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)、丙二醛(MDA)的含量变化。结果发现:与对照组相比,应激组猪血清SOD活力在第1天显著升高;MDA含量在第6天显著升高;GSH-Px活力在第6和10天显著高于常温组(P<0.05)。与应激组相比,方2组的GSH-Px活力在第2天显著升高,方1和方2组MDA含量在第10天显著降低(P<0.05)。表明高温状态下,猪体内MDA含量增加,GSH-Px活性增强;中药添加剂能促进热应激仔猪抗氧化功能的恢复和提高,且方2效果优于方1。  相似文献   

低蛋白质对猪胴体品质的影响     

郑燕斌  单安山  张苏江 《中国饲料》2008,(23)

本文综述了补充平衡氨基酸的低蛋白质日粮时于断奶仔猪及肥育猪的生产性能、胴体品质、脏器重量影响的研究,并分析了低蛋白质日粮对其生产性能和肉质影响的可能原因.  相似文献   

影响仔猪胃肠道发育的因素   总被引：1，自引：0，他引：1  

赵元  秦贵信 《中国畜牧杂志》2008,44(7):56-60

仔猪胃肠发育的情况直接影响了营养物质的消化、吸收及利用,及时找到影响其发育的因素对仔猪的营养管理是非常有意义的。目前发现的诸多因素中,生长因子及营养物质对其发育起到促进作用,而抗营养因子往往对其发育不利。本文从生长因子、营养物质到抗营养因子角度出发,分析了它们对仔猪肠道发育影响,为今后合理配制仔猪饲养阶段的日粮提供依据。  相似文献