Breed-wise standard electrocardiographic values in dogs have been reported as there is variation in body and chest conformation, which limits the application of data of one breed for other breed. Labrador retrievers being originated from hunting dogs, their electrocardiogram (ECG) values might be different from standard normal range of other dog breeds. So, the purpose of the present study was to determine the standard ECG of Labrador retrievers and to check effect of body weight, gender and breed upon different ECG parameters. Six-lead ECGs, three bipolar standard limb leads (I, II and III) and three augmented unipolar limb leads (aVR, aVL and aVF), were taken from 24 Labrador retrievers positioned in right lateral recumbency without any chemical restraint. Amplitude and duration of P wave and QRS complex, PR interval, QT interval and mean electrical axis and heart rate were measured in each recording. Non-significant effect of gender and body weight was seen on all the ECG waves. Deep Q waves in Leads I, II and aVF and variation in relation to QRS pattern were noted. It was concluded that retrievers had a specific shape of QRS complex which must be considered when evaluating a patient suspected of having cardiac disease. However, amplitude and durations of different ECG waves in all the six leads were statistically not affected by gender or body weight.

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The present study was undertaken to investigate the sedative, analgesic and clinical effects of xylazine, medetomidine and dexmedetomidine with fentanyl as pre-anaesthetics in water buffaloes and to compare the dose-sparing effect of xylazine, medetomidine and dexmedetomidine on thiopental for induction and isoflurane for maintenance of anaesthesia in water buffaloes. Six male water buffaloes randomly received intravenous fentanyl (5.0 µg/kg body weight) and xylazine (0.05 mg/kg body weight), fentanyl (5.0 µg/kg body weight) and medetomidine (2.5 µg/kg body weight), fentanyl (5.0 µg/kg body weight) and dexmedetomidine (5.0 µg/kg body weight) at weekly intervals in groups I1, I2 and I3, respectively. After 15 min, the animals were restrained in right lateral recumbency and anaesthesia was induced by 5% thiopental sodium administered intravenously. The intubated animal was connected to the large animal anaesthesia machine and isoflurane in 100% oxygen (5 L/min) was insufflated for 60 min. The treatments were compared by clinicophysiological, haematobiochemical and haemodynamic parameters. Fentanyl-medetomidine and fentanyl-dexmedetomidine produced more cardiovascular depression during the pre-anaesthetic period but less depression of cardio-respiratory dynamics in the post induction and maintenance period. Quicker recovery was recorded in I2 and I3 groups. A lower dose of thiopental was required in group I3 (4.33 mg/kg ± 0.66 mg/kg) than in groups I2 (4.41 mg/kg ± 0.98 mg/kg) and I1 (4.83 mg/kg ± 0.79 mg/kg). The dose of isoflurane was less in group I3 (45.50 mL ± 5.45 mL) than in group I1 and I2 (48.66 mL ± 5.10 mL and 48.00 mL ± 6.38 mL). Better anaesthesia was recorded with fentanyl-dexmedetomidine-thiopental-isoflurane (group I3) than with fentanyl-medetomidine-thiopental-isoflurane (group I2) and fentanyl-xylazine-thiopental-isoflurane (group I1). Fentanyl-medetomidine and fentanyl-dexmedetomidine were better pre-anaesthetic agents in comparison to fentanyl-xylazine for thiopental and isoflurane anaesthesia. Fentanyl-dexmedetomidine-thiopental-isoflurane and fentanyl-medetomidine-thiopental-isoflurane produced effective surgical anaesthesia and were found to be safe, as cardio-pulmonary functions were well preserved during maintenance anaesthesia with no deleterious effect on vital organ functions in water buffaloes.

Aim: The aim of this study was to evaluate the simple tube cystostomy procedure for management of urethral obstruction cases in ruminants. Materials and Methods:Tube cystostomy was used to treat a total of 58 ruminants, which included 35 buffalo calves and 23 goats. Diagnosis of the disease was made with the history of anuria, clinical signs, and physical examinations. Physical parameters like heart rate, respiratory rate, rectal temperature dehydration status of animals by skin tenting test, and intraoperative findings were compared.Results: Young ruminants were most commonly affected and the mean age was 4-5 months in both species. Only male were considered for the study in which buffalo calves were not castrated but in goat's 73.91% animal were castrated and 34.7% not castrated. Rupture of bladder was more common in buffalo calves as compared to goats. The confirmed cases of obstructive urolithiasis were selected for tube cystostomy with Foley's catheter. Postoperatively all cases were administered with broad spectrum antibiotic, anti-inflammatory agent, and caliculolytic agents like ammonium chloride. Postoperative complications recorded only in 10 animals and remaining 48 animals had an uneventful recovery. Conclusion:Tube cystostomy is a simple and effective procedure particularly in intact urinary bladder, which can be adopted at field level.

The present study was conducted to evaluate the erythrocytic oxidantÁantioxidant balance in dogs suffering from hind quarter weakness (HQW) and treated with conventional drug therapy (CDT, n 08) alone and in combination with therapeutic ultrasound (US, n 08) and shortwave diathermy (SWD, n 08). A further eight healthy dogs were used as controls. For oxidant level, Lipid Peroxidation (LPO) and antioxidant levels Reduced Glutathione (GSH), Superoxide Dismutase (SOD) and Catalase (CAT) were evaluated in erythrocyte before (day 0) and after 3, 7, 14 and 28 days of therapy. In dogs with HQW, LPO in terms of Malondialdehyde (MDA) production, was found significantly (P B0.05) increased compared to a healthy control on day 0. Thereafter, a significant (PB0.05) decrease in the level of LPO was noticed. Amongst antioxidant enzymes, activities of GSH and CAT decreased significantly (PB0.05) whereas, the level of SOD increased significantly (PB0.05) until day 28 post treatment. Studies revealed that SWD and therapeutic ultrasound in conjunction with CDT can be used to counter free radical-mediated oxidative cell injury, induced by HQW in dogs. However, SWD proved to be better in minimizing excess free radicals production and activating antioxidant defense system as compared to therapeutic ultrasound.

Aim: To evaluate the effect of Electro-Acupuncture (EA) and Static Magnetic Field (SMF) therapy on healing of bone defect in rabbits. Materials and MethodsA 2 mm bone defect was created at radial midshaft of 18 New Zealand White rabbits. The animals were then randomly divided into 3 equal groups. The animals in the group A did not receive any physiotherapy and served as control. Group B animals were treated with the EA using 50 Hz and 3-10 mA DD current for 10 min. Group C animals were treated with SMF therapy on alternate days till day 15. Activity of serum calcium (Ca), potassium (P) and ALP; Plasma Cortisol and LPO were evaluated preoperatively and on days 7, 15, 30 and 60 of experiment.Results: Postoperatively, SMF therapy treated animals exhibited higher Ca, P and ALP level and low initial level of Cortisol and LPO as compared to EA and control group animal. Conclusion:SMF and EA had positive effect on bone defect healing and early resolution of stress, induced due to creation of bone defect, however SMF had an edge over EA.