Nepal is a rabies endemic country where stray and community dogs are the main reservoir of this life threatening diseases. The orchidectomy is performed to control the male dog population, which is supposed to be very painful and invasive thereby not rational in context of animal welfare. Therefore present study was undertaken to study the efficacy of single intratesticular injection of calcium chloride for neutering of the male dog. Twelve apparently healthy male dogs were randomly allocated into 3 groups (n=4). Group-I received single bilateral intratesticular injection of 20% calcium chloride together with 1% lignocaineHCl at dose determined accordingly with testicular width. Similarly, Group-II received a single bilateral intratesticular injection of sterile normal saline containing 1% lignocaine-HCl. However, the orchidectomy was performed following the standard surgical protocol in the dogs of Group-III. Histopathologically, the calcium chloride injected testicular section demonstrated dissolution of the germ cell association, atrophied seminiferous tubules and washing out of the germ cells from the tubules. In some area, there was coagulative necrosis of the seminiferous epithelium and interstitial spaces as well as degenerated and coagulated germ cells in combination with fibrous tissue. Intertubular edema, fibrosis, hemorrhage were also evident. Some necrotic cells showed desquamation or even calcification. Intertubular vessels were severely congested. There was complete loss of tubular architecture without any distinct boundary between the tubular and extra tubular compartment in some region of testis. The intratesticular injection of 20% calcium chloride did not show any apparent pain, stress, metabolic toxicity and untoward side effect. Histomorphological findings revealed the uneven distribution of damage and inconsistent affect on seminiferous tubules. Therefore, intratesticular injection of calcium chloride could be useful alternative for neutering the male dog.
The ventral midline approach (VMA) and right flank approach (RFA) are common procedures for the sterilization of bitches. This study compared the different parameters viz. total duration of surgery, recovery time, and length of the incision as well as body temperature, heart rate, respiration rate, and SpO2 in each approach. Twenty (20) bitches were divided randomly for the RFA and VMA. Meloxicam (0.2 mg/kg) was administered subcutaneously half an hour before the induction to provide preemptive analgesia. Diazepam and ketamine were administered intravenously at dose rates of 0.25 mg/kg and 2.5 mg/kg, and 0.17 mg/kg and 3.33 mg/kg, respectively to produce and maintain anesthesia. Each parameter was recorded at the pre-operative, operative and post-operative times. The average duration of surgery and length of incision of RFA (16.1 ± 5.13 min and 2.44 ± 0.83 cm) were significantly lower (p < 0.05) than the VMA (21.3 ± 5.48 min and 3.53 ± 0.7 cm). The operated bitches showed hypothermia (p < 0.05) at 1 hour compared to baseline and 24 hours of surgery. Heart and respiration rates increased significantly (p < 0.05) during traction and severing of ovarian ligaments in bitches within the RFA group, but there was no significant difference within VMA approaches. The sedation score was significantly higher (p < 0.05) at 1 hour after surgery in both approaches. Based on the duration of surgery and length of incision RFA approach was quick and minimal skin wound. Further studies on bitches considering molecular investigations of surgical stress are imperative.
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