共查询到19条相似文献，搜索用时 171 毫秒
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氯胺酮和安定复合麻醉，实验犬脑电图波幅显著升高，节律显著变慢，临床上出现肌肉松弛，痛觉和意识消失，为外科手术的适宜时期。 相似文献
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生物频谱对家兔胚胎发育影响的初步研究 总被引：4，自引：1，他引：3
本文首次研究了周林生物频谱照射对家兔胚胎体外发育的影响，初步探讨了周林生物频谱在胚胎工程中应用的可能性。周林生物频谱分别照射家兔２－细胞胚胎３、５、７、１０、１５、２０、２５分钟，结果照射１０、１５、２０、２５分钟，可使７２小时（从注射ＨＣＧ后算起，即照射后４８小时）桑椹胚发育率显著增加，照射２０和２５分钟可提高７２、８４、９６和１０８小时囊胚发育率，照射１０分钟和１５分钟可提高１０８小时囊胚发育率，照射７、１０、１５、２０和２５分钟可提高９６小时扩张囊胚发育率及１０８小时孵化囊胚发育率。周林生物频谱照射家兔１６－细胞胚胎２０分钟，其６０小时（从注射ＨＣＧ后起，即照射后１２小时）致密桑椹胚发育率与对照比较差异极显著（Ｐ＜０．０１），囊胚、扩张囊胚和孵化囊胚发育率与对照比较无显著差异（Ｐ＞０．０５） 相似文献
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新西兰白兔肌肉品质的研究 总被引：4，自引：1，他引：4
经对４３只２至１２周龄新西兰白兔的肌肉品质研究表明，不同日龄肌肉的ｐＨ值均为６．１２－６．６３；背最长肌和股二头肌的系水力随日龄的增长逐渐增强，且同日龄的测定值无显著差异；腰大肌的熟肉率，６周龄前随日龄增长而逐渐升高，６周龄后则稳定在６ｌ－６２％；半腔肌嫩度随着日龄增长而降低；股四头肌的粗蛋白质含量，随日龄增长而增加，但在１０－１２周龄时稳定在２１．１－２３．５％。本研究结果提示，肉用新西兰白兔在１０－１２周龄时上市较为合适。 相似文献
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安格斯牛冻胚洲际间引种试验成功 总被引：1，自引：0，他引：1
我们从澳大利亚引入安格斯（Ａｎｇｕｓ）牛７日龄冻胚１６枚。这１６枚冷冻胚胎在液氮中保存８９４天后，用３６℃水浴解冻（２５秒钟），全部回收，在室温２７℃条件下，用１０％蔗糖一步脱除抗冻剂（甘油）１０分钟后，移入２００％犊牛血清ＰＢＳ１０分钟，再移入同样浓度的犊牛血清ＰＢＳ中１０分钟。按常规形态鉴定方法，对胚胎评级，１０枚为可用胚胎，解冻后胚胎可用率为６２．５％（１０／１６。将１０枚可用胚胎用非手术法，移入发情周期与胚胎发育期同步的５头受体牛，结果２头妊娠，移位妊娠率为４０％（２／５）。妊娠足月后，２头受体牛各产公犊１头。在我国首次获得成功。 相似文献
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选肥育猪６０头，随机分为两组，试验组３０头，应用拟氦氖激光辐射猪左眼内眼角，每头２分钟，每日１次，共１０，辐射后观察６４天。试验组和对照组猪平均体重的统计学分析表明，差异显著（Ｐ＜０．０５）。 相似文献
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用豆浆喂蛋鸭我地用此法，使蛋鸭的产蛋率保持８０％以上，最高可达９５％，其方法如下：将黄豆晒干，加工成豆粉贮存，用时将豆粉放在有盖水桶内，再把烧沸的开水倒入桶内（每ｋｇ豆粉加水２０００ｍＬ）加上桶盖，经１０分钟后即制成豆浆，然后用豆浆调拌其它饲料喂蛋鸭... 相似文献
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应用噻胺酮对８条犬进行麻醉脑电图监测试验。应用ＳＪ－４２型生理多导仪描记术的麻醉脑电图。结果诱导麻醉后，犬的脑电图无论在波形，频率，还是波幅方面都发生了极为显著的改变，其主要特征是脑电由高低幅快节律转变为低频高幅慢节率。 相似文献
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Goiz-Marquez G Caballero S Solis H Rodriguez C Sumano H 《Research in veterinary science》2009,86(1):152-161
The purpose of this study was to evaluate both, clinically and with electroencephalographic (EEG) recordings, the effect of gold wire implants in acupuncture points in dogs with uncontrolled idiopathic epileptic seizures. Fifteen dogs with such diagnosis were enrolled in the study. A first EEG recording was performed in all dogs under anaesthesia with xylazine (1 mg/kg) and propofol (6 mg/kg) before the treatment protocol, and a second EEG was performed 15 weeks later. Relative frequency power, intrahemispheric coherence available through EEG, number of seizures and seizure severity were compared before and after treatment using a Wilcoxon signed-rank test. There were no significant statistical differences before and after treatment in relative power or in intrahemispheric coherence in the EEG recording. However, there was a significant mean difference in seizure frequency and seizure severity between control and treatment periods. After treatment, nine of the 15 dogs (60%) had at least a 50% reduction in seizures frequency during the 15 weeks established as follow-up of this treatment. 相似文献
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Jeserevics J Viitmaa R Cizinauskas S Sainio K Jokinen TS Snellman M Bellino C Bergamasco L 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2007,21(6):1299-1306
BACKGROUND: Qualitative and quantitative electroencephalography (EEG) parameters of healthy and Finnish Spitz dogs with epilepsy have not been determined. OBJECTIVE: To determine if EEG can provide specific characteristics to distinguish between healthy dogs and dogs with epilepsy. ANIMALS: Sixteen healthy and 15 Finnish Spitz dogs with epilepsy. METHODS: A prospective clinical EEG study performed under medetomidine sedation. Blinded visual and quantitative EEG analyses were performed and results were compared between study groups. RESULTS: Benign epileptiform transients of sleep and sleep spindles were a frequent finding in a majority of animals from both groups. The EEG analysis detected epileptiform activity in 3 Finnish Spitz dogs with epilepsy and in 1 healthy Finnish Spitz dog. Epileptiform activity was characterized by spikes, polyspikes, and spike slow wave complexes in posterior-occipital derivation in dogs with epilepsy and with midline spikes in control dog. The healthy dogs showed significantly less theta and beta activity than did the dogs with epilepsy (P < .01), but the only significant difference between healthy dogs and dogs with untreated epilepsy was in the alpha band (P < .001). Phenobarbital treatment increased alpha, beta (P < .001), and theta (P < .01), and decreased delta (P < .001) frequency bands compared with dogs with untreated epilepsy. CONCLUSIONS AND CLINICAL IMPORTANCE: Benign epileptiform transients of sleep could be easily misinterpreted as epileptiform activity. Epileptiform activity in Finnish Spitz dogs with epilepsy seems to originate from a posterior-occipital location. The EEG of dogs with epilepsy exhibited a significant difference in background frequency bands compared with the control dogs. Phenobarbital treatment markedly influenced all background activity bands. Quantitative EEG analysis, in addition to visual analysis, seems to be a useful tool in the examination of patients with epilepsy. 相似文献
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Abstract AIM: To compare the peri-operative electroencephalogram (EEG) responses and post-operative analgesic efficacy of pre-operative morphine or tramadol with a combination of low-dose pre-operative morphine and post-operative tramadol, in dogs undergoing ovariohysterectomy. METHODS: Dogs undergoing routine ovariohysterectomy were treated with either pre-operative morphine (0.5 mg/kg S/C, n=8), or tramadol (3 mg/kg S/C, n=8), or pre-operative low-dose morphine (0.1 mg/kg S/C) and post-operative tramadol (3 mg/kg I/V, n=8). All dogs received routine pre-anaesthetic medication, and anaesthesia was induced with I/V thiopentone to effect and maintained with halothane in oxygen. Respiratory rate, heart rate, end-tidal halothane tension (EtHal) and end-tidal CO2 tension (EtCO2) were monitored throughout surgery. The EEG was recorded continuously in a three electrode montage. Median frequency (F50), total power (Ptot) and 95% spectral edge frequency (F95) of the EEG power spectra were compared during different 100-second periods of surgery: prior to and during skin incision, ligation of each ovarian pedicle, ligation of uterine body and skin closure. Post-operatively, pain was assessed using the short form of the Glasgow composite measure pain scale (CMPS-SF). RESULTS: There was no difference in F50 or Ptot of the EEG between baseline and noxious surgical events within each treatment group, or between the three groups (p>0.05). The mean F95 was higher during the first three periods of surgery for dogs administered tramadol and low-dose morphine than those that received 0.5 mg/kg morphine (p=0.001). Dogs that received low-dose morphine and tramadol had lower CMPS-SF pain scores after ovariohysterectomy than those that received either tramadol or morphine alone (p=0.001). There was no difference in pain scores between dogs in the latter two groups. CONCLUSION AND CLINICAL RELEVANCE: Tramadol and morphine administered pre-operatively provided an equal degree of post-operative analgesia in dogs after ovariohysterectomy. A combination of pre-operative low-dose morphine and post-operative tramadol produced better post-operative analgesia than either drug administered alone pre-operatively. Administration of analgesics pre- and post-operatively could result in improved post-operative well-being of ovariohysterectomised dogs. 相似文献
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Ranno Viitmaa Merja Haaparanta‐Solin Marjatta Snellman Sigitas Cizinauskas Toomas Orro Erja Kuusela Jarkko Johansson Tapio Viljanen Tarja S. Jokinen Luciana Bergamasco Liisa Metsähonkala 《Veterinary radiology & ultrasound》2014,55(4):453-461
In human epileptic patients, changes in cerebral glucose utilization can be detected 2‐deoxy‐2‐[18F] fluoro‐d ‐glucose positron emission tomography (FDG‐PET). The purpose of this prospective study was to determine whether epileptic dogs might show similar findings. Eleven Finnish Spitz dogs with focal idiopathic epilepsy and six healthy dogs were included. Dogs were examined using electroencephalography (EEG) and FDG‐PET, with epileptic dogs being evaluated during the interictal period. Visual and semi‐quantitative assessment methods of FDG‐PET were compared and contrasted with EEG findings. Three independent observers, unaware of dog clinical status, detected FDG‐PET uptake abnormalities in 9/11 epileptic (82%), and 4/8 healthy dogs (50%). Occipital cortex findings were significantly associated with epileptic status (P = 0.013). Epileptic dogs had significantly lower standardized uptake values (SUVs) in numerous cortical regions, the cerebellum, and the hippocampus compared to the control dogs. The lowest SUVs were found in the occipital lobe. White matter normalized and left‐right asymmetry index values for all pairs of homologous regions did not differ between groups. Visual evaluation of the EEGs was less sensitive (36%) than FDG‐PET. Both diagnostic tests were consensual and specific (100%) for occipital findings, but EEG had a lower sensitivity for detecting lateralized foci than FDG‐PET. Findings supported the use of FDG‐PET as a diagnostic test for dogs with suspected idiopathic epilepsy. Visual and semiquantitative analyses of FDG‐PET scans provided complementary information. Findings also supported the theory that epileptogenesis may occur in multiple brain regions in Finnish Spitz dogs with idiopathic epilepsy. 相似文献
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Electroencephalograms were recorded from 10 dogs before, immediately after, and every 10 minutes (for 60 minutes) after IV injection of 0.005 ml of a fentanyl citrate and droperidol combination/kg of body weight. Narcosis was adequate for recording. At 30 to 40 minutes after injection, tail wagging was the only adverse reaction (EEG artifact) observed. The only changes in EEG activity observed were a slight increase in amplitude of the dominant activity and an increase in spindle-like activity. Daily repetition for 5 days did not alter the EEG pattern or the behavior of the dogs. 相似文献
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Christina Brauer Sabine B.R. Kästner Henning C. Schenk Julia Tünsmeyer 《Research in veterinary science》2011,90(2):306-311
This study was performed to improve a standard anesthetic protocol for electroencephalography (EEG) in dogs and to evaluate the effect of photic stimulation and hyperventilation on the EEG of healthy dogs. Ten clinically and neurologically normal beagle dogs were anesthetized with propofol given intravenously with average doses of 7.5 mg/kg for induction and 0.37 mg/kg/min constant rate infusion for maintenance. Rocuronium bromide (0.4 mg/kg IV) was used as a peripheral muscle relaxant in order to prevent muscle artifacts. EEGs were recorded digitally using five subdermal needle electrodes. Photic stimulation and hyperventilation were performed to evaluate two activation techniques commonly used in human EEG recording methods. Monopolar and bipolar montages were analyzed visually and quantitatively. The use of rocuronium produced muscle artifact-free EEG recordings during the given recording procedure which indicates that rocuronium is a valuable adjunct to anesthesia during EEG recording. Photic stimulation and hyperventilation did not provoke paroxysmal discharges in the EEG of healthy dogs. Analysis of quantitative EEG data showed that background activity did not differ significantly between periods with and without stimulation. This data are important basic values and will further help to compare the effects of photic stimulation and hyperventilation of healthy dogs and those suffering from epilepsy. 相似文献
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C. Jurney J. Haddad N. Crawford A.D. Miller T.J. Van Winkle C.H. Vite P. Sponenberg K.D. Inzana C.R. Cook L. Britt D.P. O'Brien 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2009,23(4):871-874
Background: Polymicrogyria is a disorder of cerebrocortical migration resulting in increased numbers of small, disorganized gyri. This disorder occurs in Standard Poodles and in cattle.
Objectives: To describe the clinical, electroencephalographic, imaging, and histopathologic features in poodles with polymicrogyria.
Animals: Five Standard Poodles with histologically confirmed polymicrogyria.
Methods: Retrospective case series. Cases were obtained by personal communication with 1 of 2 authors (TJVW, DPO).
Results: All dogs had cortical blindness and other neurologic abnormalities including gait and behavioral changes. Magnetic resonance imaging of 3 dogs showed multiple disorganized gyri, which were especially apparent on T2-weighted dorsal plane images. Electroencephalogram (EEG) of 1 dog revealed epileptiform discharges, including both spike and spike and wave discharges with voltage maximum potentials over the parietal/occipital region. The EEG supported that the repetitive behavior displayed by the dog was a complex partial motor seizure. One dog had concurrent hydrocephalus. All dogs had occipital lobe involvement and 2 dogs had involvement of other lobes.
Clinical Importance: The cases presented here demonstrate a larger age range (7 weeks to 5 years) and a decreased frequency of associated hydrocephalus when compared with the previous report. 相似文献
Objectives: To describe the clinical, electroencephalographic, imaging, and histopathologic features in poodles with polymicrogyria.
Animals: Five Standard Poodles with histologically confirmed polymicrogyria.
Methods: Retrospective case series. Cases were obtained by personal communication with 1 of 2 authors (TJVW, DPO).
Results: All dogs had cortical blindness and other neurologic abnormalities including gait and behavioral changes. Magnetic resonance imaging of 3 dogs showed multiple disorganized gyri, which were especially apparent on T2-weighted dorsal plane images. Electroencephalogram (EEG) of 1 dog revealed epileptiform discharges, including both spike and spike and wave discharges with voltage maximum potentials over the parietal/occipital region. The EEG supported that the repetitive behavior displayed by the dog was a complex partial motor seizure. One dog had concurrent hydrocephalus. All dogs had occipital lobe involvement and 2 dogs had involvement of other lobes.
Clinical Importance: The cases presented here demonstrate a larger age range (7 weeks to 5 years) and a decreased frequency of associated hydrocephalus when compared with the previous report. 相似文献