51.
Prevalence And Chemotherapy Of Fusobactemium Necrophorum In Dairy Cattle
by Haq Nawaz | Prof. Dr. Muhammad Sarwar Khan | Dr | Prof. Dr. Aneela Zameer Durrani.
Material type: ; Format:
print
; Literary form:
not fiction
Publisher: 2014Dissertation note: Abstract Availability: Items available for loan: UVAS Library [Call number: 2146,T] (1).
52.
A Clinico - Hematological Study On Hepatic Regeneration After Variable Degrees Of Resections In Rabbits
by Muhammad Babar Saleem (2005-VA-72) | Prof. Dr. Muhammad Arif Khan | Dr. Hafsa Zaneb | Ms. Ayesha Safdar | Faculty of Veterinary Sciences.
Material type: ; Format:
print
Publisher: 2014Dissertation note: Liver is the largest visceral organ in the body and has a paramount importance. Its multi-functional abilities make it absolutely necessary for survival. It performs numerous functions in a living organism and plays its role in various physiological and biochemical regulatory processes in the body. It is also the only organ that has the capability to undergo the phenomenon of regeneration in case of cellular injury induced by chemicals or surgery.
According to Craige (1948) Liver is the largest gland of the body. It is an extension of the gastro-intestinal track and connects with GIT to the common bile duct.It has two surfaces. The anterior or dorsal surface is convex while the posterior surface is concave and lies over the stomach. Liver is thickened in its dorsal portion and tappers to a thin ventral margin. The liver is incompletely divided into a right and a left liver lobe, each of which have anterior and posterior lobules. The right posterior lobule lies closely to the dorsal body wall and it accommodates right kidney in a depression called renal fossa. The gall bladder is a thin walled pouch located in a deep depression on the ventral surface of right anterior lobule. The quadrate lobe extends from the right lobe and is usually notched on its medial margin. The caudate lobe is small and well separated. The portal fissure is a large depression filled by the portal vein and it also contains some branches of hepatic artery. The liver is held in place by four ligaments namely falciform ligament, round ligament, coronary ligament and left triangular ligament.
According to Borley & Achan (2005) Liver plays a key role in several regulatory processes in an organism. It is involved in various metabolic pathways comprising variable interactions with proteins, carbohydrates and fats. Liver is the main site for gluconeogenesis, converts galactose and fructose into simple sugars (glucose) and stores complex carbohydrates (glycogen).It aids in the production of different types of proteins and has a role in the formation of urea. Numerous types of fats like phospholipids, cholesterol and lipoproteins are synthesized in the liver. Liver also uses different carbohydrates and proteins to form certain fats. Liver serves as a vault for the storage of several vitamins (A, B2 and D) and iron. It helps in the complex process of coagulation by aiding in the synthesis of several important coagulation factors including prothrombin, protein C, and factors VII, IX and X.Several hormones including oestrogen, aldosterone and cortisol are metabolized in the liver. It is involved in the metabolism of a number of drugs and also has a key role in the production and excretion of bile. In fetal life, haematopoiesis is one of the key functions which is performed by liver.
Liver resectioning is a technique employed for correction of numerous ailments or for the purpose of experimental study. Diseases such as tumorous growths on the liver, hepatic necrosis, cyst formation, hepatic abscess, hepatic lobe torsion and numerous others require the removal of the affected part of the liver(Martin et al. 2003; Pignon et al. 2013). The remaining liver usually recovers by regeneration through hyperplasia and hypertrophy of healthy cells of the un-affected part of the liver (Palmes and Spiegel, 2004). For experimental reasons, where different aspects of liver regeneration process are to be studied, liver resectioning technique is employed (Mao et al. 2014; Fausto et al. 2012).
Numerous studies have been done to see the regeneration rate of liver in different species. In rats it has been noticed that liver can regenerate to its original size after two-third hepatectomy in only five to seven days (Mao et al. 2014).Another author states the recovery to occur in less than two weeks in rodents (Gilgenkrantz and Hortet, 2011). In humans it has been shown that resectioning up to 50 percent has resulted in complete regeneration of liver mass in only a period of two weeks (Häussinger, 2011).
Rabbits being small laboratory animals with comparative ease of handling have been used extensively for research purposes. Regeneration has been studied in rabbits post chemical insult on liver or through portal branch ligations (Palmes and Spiegel, 2004).
As opposed to general perception, Carpenter (2003) states that the rabbits fall under the category of rodents, they in actuality are lagomorphs. Two families composed of twelve genera and eighty-one species fall under the umbrella of order lagomorpha. They are cosmopolitan in their distribution. The main difference between rodents and lagomorphs is the presence of two pairs of upper incisors in the former group, whereas the later have only one pair of upper incisors. Despite having a great degree of similarity which these two groups share together, they are not thought to be closely associated. The animals of both the categories evolved into nine creatures separately and their similar dental patterns resulted from parallel evolution. All legomorphs consume foliage and practice caprophagy.
All lagomorphs are blessed with acute tactile and olfactory senses with a considerable long-haired fluffy body coat. Lagomorphs have big side-to-side set eyes giving them a broader circular vision. Testes are in the scrotum in front of the penis. Baculum is absent in males. Females bear two to five pairs of mammary glands.
Deficiency has been observed in terms of study of liver regeneration when liver resectioning is performed. The present study aims to focus on this aspect of research on soft tissue, which would enhance our understanding of liver regeneration and its rate in this specie.
Availability: Items available for loan: UVAS Library [Call number: 2182,T] (1).
53.
The Effects Of Xylazin-Butorphenol And Detomidine-Butorphenol On Clinico-Biochemical Parameters During Castration in Dog
by Nadir Hussain (2006-VA-07) | Prof. Dr. Muhammad Arif Khan | Dr. Shehla Gul Bukhari | Prof. Dr. Muhammad Sarwar Khan | Faculty of Veterinary Sciences.
Material type: ; Format:
print
Publisher: 2014Dissertation note: Anesthesia is a reversible process and derived from Greek word “anaisthaesia” meaning “insensibility” and used to desensitize the whole or any part of the body. Anesthesia is classified by method of administration i.e. intramuscular, inhalational and intravenous. Injectable anesthesia includes Propofol, Diazepam, Acepromazine, Medetomidine, Xylazine and Ketamine. Anesthetic agent can be used alone or in combinations (Gonzalez et al. 2003).
The purpose of Anesthesia is to produce a convenient, safe, effective, and economical means of facilitating surgical procedures while minimizing stress, pain and discomfort and adverse side effects. There are many routes of administration of anesthesia; in intravenous route, the onset of action is immediate. Peak effect is rapidly obtained, duration of action is short, and effects are more intense/ profound than other routes.Many combinations of anesthesia are in use in dogs for different surgery xylazine (0.4 mg/kg IV) combination with butorpjanol (0.2 mg/kg IV), xylazine (0.4 mg/kg IV) combination with oxymorphone (0.05mg/kg IV) , xylazine (0.4 mg/kb IV) combine with morphine (0.25mg/kg) , Medetomidine (5 to 15 ug/kg combine with butophanol (0.2 mg/kg IV), Medetomidine (5 to 15 ug/kg IV) combine with oxymorphone (o.05 mg/kg) Xylazine (0.4mg/kg) combine with Ketamine (5 to 10 mg/kg IV) acepromazine (0.05 to 0.2mg/kg IV or SQ) in combination with morphine (0.4 to 0.8mg/kg IV) and diazepam or midazolam(0.2 mg/kg IV) with hydromorphone or oxymorphone( 0.1 to 0.2 mg/kg IV) use in dog and cat (Greene 1999).
Detomidine is a selective α2-adrenoceptor agonist with useful sedative, analgesic and muscle relaxation properties and is widely used as a tranquilizing or pre-anaesthetic medication in veterinary medicine But it induces cardiovascular side-effects such as hypertension, hypotension, bradycardia and dysrhythmia.detomidine. It produces prolonged and intense analgesia. Nature of the analgesic effect appears to be wide, producing a reduced response to be a secondary result of the central nervous system experimental stimulation and exhibiting a clinical effect in the horse with colic. Detomidine can be used as a safe and effective pre anaesthetic resulting in smooth induction and recovery (EL-Kammar et al. 2014).
Xylazine Hcl has been widely used as a preanesthetic drug and for immobilizing dogs for diagnostic procedures (Short 1987).Xylazine is the shortest acting alpha2-adrenergic agonist..A problem with alpha2-adrenergic agonists is that they may respond suddenly to stimulation, especially to touch. The combination of opioid drugs with the alpha2-adrenergic agonists appears to reduce such sudden reactions and a synergistic effect regarding sedation and antinociception has been suggested. Additionally, all alpha2-adrenergic agonists have a dose-dependent effect on cardiovascular function. By adding an opioid drug, dose requirements of alpha2-adrenergic agonists may be reduced and cardiopulmonary function improved. The addition of opioids does not further impair cardiovascular function.The combination of xylazine and butorphanol at the doses generally used in clinical practice produces minimal and transient haemodynamic effects and no significant respiratory depression. There is no ‘blinded’ randomized crossover study regarding the xylazine sparing effects of butorphanol on sedation of horses. There are limited reports on the respiratory effects of butorphanol alone or in combination with the α2-agonist xylazine in horses, but the effects of the combination on pulmonary gas exchange have not been clarified (Ringer et al. 2012).
Butorphanol is an opioid agonist-antagonist with good analgesic effects. Butorphanol is used in veterinary medicine as pain reliever and cough suppressant. It induces only mild sedation and has minimum adverse effects to the cardiovascular system. It may cause mild lowering of the heart rate and arterial pressure or slight respiratory depression. It exerts a depressive action on the respiratory system. It should not use in patient with liver disease because it cannot be eliminated and may accumulated to toxic level (Raušer and Lexmaulova, 2002).It is believed to be more effective against visceral rather than somatic pain. The antagonist property towards μ-receptors results in a ceiling analgesic effect with increasing doses. However in dogs doses between 0•2 and 0•8 mg/kg have been reported to provide visceral analgesia in vivo .Butorphanol is a dose-related respiratory depressant and causes small decreases in arterial blood pressure and heart rate (Vettorato and Bacco 2011).
Castration is indicated for reproductive neutering, modification of behavior patterns, testicular neoplasia, severe testicular or scrotal trauma or injury, refractory orchitis, benign prostatic hyperplasia, perianal gland adenoma, perineal hernia, and scrotal urethrostomy in dogs. There is no specific anesthetic method for castration. Routinely castration surgery can be performed under general anesthesia or local anesthesia (Kim et al. 2004).
Unlike other laboratory animals that are commonly used forresearch purpose, non-human primates and dogs are also used for research work. Their use in the biological researchrequires special considerations, regarding their care and housing, and more specifically their handling and restraining. Since non-human primates and dogs present special hazards to handlers, particularlybecause of the danger of bites and zoonotic infections (Fortman et al. 2001).
Deaths due to anesthesia are lesser in dogs (1 in 601) than rabbits (1 in 72) that are the third most commonly anaesthetized pet animal in the United Kingdom (Brodbelt et al. 2005).
Availability: Items available for loan: UVAS Library [Call number: 2185,T] (1).
54.
Comparative Efficacy Of Different Nsaids Against Bovine Ephemeral Fever
by Ghazanfar Ali Chishti (2007-VA-51) | Prof. Dr. Aneela Zameer Durani | Prof. Dr. Muhammad Sarwar Khan | Dr. Shehla Gul Bukhari.
Material type: ; Literary form:
not fiction
Publisher: 2015Dissertation note: Dairy sector has significant role in Pakistan economy with a share of 46.8% in agriculture and 10.8% to Pakistan GDP. Pakistan ranks 4th among largest milk producing countries in the world (Anonymous 2012-13).In last decade, dairy sector in Pakistan has seen tremendous growth and corporate investment. More than 40000 exotic cross bred high producing cattles have been imported. Earlier this sector used to rely primarily on local low producing cattles and small scale subsistence farming, now different commercial dairy farms having high producers exotic cattles are also becoming major contributor in this sector. Trend is changing, different issues concerned with sector are rising. Sensitivity level of commercial dairy farmer is far high as compared to small scale traditional farmers, they can not accept or tolerate any factor affecting economy of their dairy business due to heavy investment.
One such issue rose to headlines in July-August 2014, Pakistan dairy industry was struck badly with an outbreak of viral disease called Bovine Ephemeral Fever (BEF). It caused colossal damages to dairy industry in terms of decreased milk production, mortalities and treatment costs. This was not an out rightly a new disease in Pakistan its episodes have been seen in past in local cattles and buffalo (Asi et al. 1999) and locally it was termed as “will” (Prof Khushe personal communication). But it never got such a hype and attention in past as local animals were already low producers and their production was never affected at substantial level. Local animals were generally weak having low Body Condition Score, a character which does not support the intensity of this disease, Ectoparasite resistance is another factor considered to be a source of protection for local animals.
Introduction
2
During initial phase of outbreak, it was considered as a common local epidemic Hemorrhagic Septicemia (HS) and Foot and Mouth Disease (FMD) and few signs also confused it with Milk Fever. But once outbreak progressed, it became clearer that it in neither HS and nor FMD it is something different. After going through literature it was clinically suspected as BEF and later was confirmed through Polymerase Chain Reaction (PCR) by University Diagnostic Laboratory (UDL), UVAS, Lahore.
BEF is a viral disease caused by genus Ephemerovirus and family Rhabdoviridae. (Uren et al. 1992).It is a noncontagious, vector borne disease of water buffaloes and cattles proposed to be communicated by midges (Culicoides biting) and mosquitoes.(Walker et al. 2012). Ephemeral fever, stiff sickness, three-day-sickness, bovine influenza and bovine epizootic fever have been used to name this viral disease in the different nations at different eras (Chiu 1986; Chiu and Lu 1986; Lin and Inoue 1969; St.George1981). BEF happens seasonally in temperate, tropical and subtropical regions of Asia, Africa, Middle-East and Australia and this is a disabling disease with significant economic effect due to reduction of milk production, loss of health status in beef herds, abortion and infertility. Characteristic clinical signs comprise of a sudden onset of fever as high as 41 °C, an abrupt and austere drop in milk production, lethargy, inappetence, salivation, depression, nasal discharge, stiffness, dyspnea and ruminal stasis (Walker et al. 2012).
Primarily, pathogenesis of BEF is based on vascular inflammation (Young and Spradbrow, 1980) so this provides the rationale for its treatment through anti-inflammatory drugs. Different NSAIDs have been used in previous studies phenylbutazone, flunixin meglumine and ketoprofen (Uren and Murphy, 1985; St George et al. 1984) but no study has been found using most common field NSAID of Pakistan, meloxicam. So, here a comparative study was carried out between three NSAIDs meloxicam, ketoprofen and phenylbutazone on naturally infected BEF animal. Availability: Items available for loan: UVAS Library [Call number: 2243-T] (1).
55.
Prevalence Of Tick Borne Hemoparasites And Identification Of Ticks With Their Treatment In Dogs
by Muhammad Shehriyar Khan (2013-VA-438) | Dr. Muhammad Ijaz | Dr. Muhammad Avais | Prof. Dr. Muhammad Arif Khan.
Material type: ; Format:
print
; Literary form:
not fiction
Publisher: 2015Dissertation note: Dogs are one of the most commonly owned companion pets worldwide. They are kept for various factors such as hunting, guarding, and amusement or for animal assisted therapy. Tick infestation is a common problem in dogs and its transmitted infections usually tick borne hemoparasitic diseases are emerging as a worldwide problem not just for animals but also for humans. Due to this phenomenon, ticks are now recognized as a major cause of various diseases in of urban environments. The current research has been conducted to study the prevalence of tick infestation, associated risk factors and chemotherapeutic trials of topical acaricides were used in order to study comparative efficacy, were conducted in dogs. Furthermore, prevalence of tick borne hemoparasitic diseases was also observed by performing microscopic blood smear examination in dogs of Lahore district.
A total of 300 dogs (n= 200 positive for tick infestation; n= 100 negative for tick infestation) having tick infestation were included in the present study. Dogs of different sex, age and breed were selected for tick collection. The ticks were collected with the help of forceps from the target sites of each dog, while adopting all necessary measures to avoid damage to the mouth parts of the ticks and skin of the host. The collected ticks were preserved in plastic containers containing 70% ethanol, which was separate for each specimen. Ticks were identified under stereoscope by observing morphological characteristics of each tick, according to the key. Blood sample for tick borne hemoparasitic diseases was drawn from cephalic vein of each dog using disposable syringe and was poured into EDTA vacutainer. Thin blood smear slide was then prepared from the blood of the animal, dried in air and was stained using Geimsa’s staining method. The hemoparasites observed in the blood of the dogs were then characterized and
Summary
51
identified by their morphological characteristics. For chemotherapy, a total of 30 tick infested dogs of different breeds viz. Rottweiler, German shepherd and Labrador was used in therapeutic trials. Each breed of dog was divided into 2 subgroups which were then treated with topical ivermectin and fipronil 1500μg/kg b.w and 15mg/kg b.w respectively. Efficacy of the drugs was then measured on the basis of disappearance of clinical signs and reversal of tick infestation at day 2, 4 and 6 of post-medication. Data regarding the prevalence of tick borne hemoparasitic diseases and tick infestation was analyzed by using Non-parametric, Chi-square test whereas data on therapeutic trials was analyzed by Z-test, using statistical package for social science (SPSS). P < 0.05 was considered significant.
The results obtained showed us that the study area is at a risk of tick infestation and tick borne hemoparasitic diseases. In dogs, Rhipicephalus sanguineus (brown dog tick) species was observed and identified as a major tick infesting dogs of the study area during the course of study. Various determinants including tick density and its genus, host age, sex, predilection site host breed and season significantly affected the tick infestation in the study area. The prevalence for tick infestation was found highest in Pastoral dogs as compared to other breed types found in dogs. Among breeds German shepherd showed highest prevalence for tick infestation. Adolescence age group among dogs was more prone to tick infestation. The number of males affected by ticks was highest as compared to females in dog population. Among the dog population, majority of the animals infested by ticks were categorized under mild infestation. The most favorable predilection site for tick infestation in dogs was ear pinnae, followed by head and then neck. Monsoon was the most favorable season for tick infestation in dogs. September was found to be highest favorable month for tick infestation in dogs.
Summary
52
In tick borne hemoparasitic diseases, babesiosis was the highest prevalent disease in dogs (63.33%), followed by trypanosomiasis (0.66%) and mixed infection (0.33%). Age group among dogs showed non-significant factor affecting prevalence for TBHD’s. The number of affected dogs for babesiosis was greater in adolescence age group as compared to other age groups. On the other hand, trypanosomiasis and mixed infection adult age group was found highly susceptible. Males of canine group were slightly more susceptible than females in case of babesiosis. Similarly for trypanosoniasis and mixed infection males were more prone than females. For babesiosis, monsoon was the most favorable season in dogs. Whereas for trypanosomiasis and mixed infection, post monsoon was found to be favorable season in dogs. In breed type of dogs, prevalence for babesiosis was found highest in Pastoral dogs. In dogs the prevalence for babesiosis was found highest in German shepherd breed, whereas for trypanosomiasis and mixed infection Cross breed was the most susceptible breed. For trypanosomiasis and mixed infection Cross breed was the most susceptible breed type. The prevalence for babesiosis was found highest in the month of September. For trypanosomiasis and mixed infection, the month of October was found to be highest susceptible month for dogs.
Chemotherapeutic trial of topical acaricides against tick infestation in dogs revealed that Fipronil was more efficacious drug as compared to Ivermectin.
Such type of epidemiological data of tick infestation, TBHDs and its chemotherapeutic trial will help to control tick infestation and tick borne hemoparasitic diseases to save the life of companion animal. Availability: Items available for loan: UVAS Library [Call number: 2303-T] (1).
56.
Sedative And Analgesic Effects Of Xylazine, Ketamine And Diazepam In Ducks
by Hafiz Manzoor Ahmad (2013-VA-856) | Dr. Hamad Bin Rashid | Prof. Dr. Muhammad Arif Khan | Dr. Asim Khalid Mahmood.
Material type: Publisher: 2015Dissertation note: Mostly of the drugs given intramuscularly are ineffective in producing anesthesia in ducks. There are some combinations which have a synergistic effect for producing good sedation and analgesia. This combination includes ketamine-xylazine and ketamine-xylazine-diazepam. This study was conducted on ducks which are divided into two groups (A, B). The group A was given xylazine (5 mg/kg) and ketamine hydrochloride (15 mg/kg) and the birds of group B was given ketamine hydrochloride (15 mg/kg), xylazine (2.5 mg/kg) and diazepam (2.5mg/kg) cocktail. Anesthesia is the desensitization of body through nerve blockage. It is the reversible state of analgesia and loss of responsive-ness, loss of skeletal muscle reflexes, decreased stress response, or all of these simultaneously. The average body temperature of ducks treated with KX and KXD was 105.02±0.12, and 104.97±0.18 oF, respectively. The average heart rate of ducks anesthetized by KX and KXD was 103.75±3.18, and 98.63±2.24 beats/min, respectively. The average respiratory rate of ducks treated with KX and KXD was 19.2±1.62, and 16.11±0.52 breaths/min, respectively. The onset of sedation in ducks anesthetized by KX, and KXD was recorded in 2.11±0.75 and 1.14±0.04 minutes after drug administration. The duration of sedation in the ducks anesthetized was 87.33±6.74, and 127.42±18.60 minutes, respectively. The recovery of ducks from sedation was recorded in 89.53±6.22, and 128.56±18.52 minutes. Onset of analgesia in ducks anesthetized by KX and KXD was recorded in3.22±0.54, and 1.67±0.77 minutes after drug administration. The duration of analgesia in the ducks anesthetized with KX and KXD was 39.76±3.89 and 81.15±11.17 minutes, respectively. The recovery of ducks from analgesia was recorded in 43.37±4.42 and 82.82±11.15 minutes, when anesthetized with KX and KXD respectively. The onset of sedation, onset of analgesia, duration was relatively delayed in KX
SUMMARY
36
group; recovery from sedation and analgesia was observed in ducks anesthetized with KX group is early than KXD group. These effects can be obtained from a combination of drugs to achieve very specific combinations of results. The purpose of this study is to evaluate the sedative and analgesic effects of xylazine- ketamine and diazepam in different combinations. Availability: Items available for loan: UVAS Library [Call number: 2422-T] (1).
57.
Study On Autologous And Homologous Platelet Rich Plasma As A Surgical Wound Healing Promoter In Rabbits
by Muhammad Shahid Tahir (2012-VA-996) | Dr. Uzma Farid Durrani | Dr. Asim Khalid Mahmood | Prof. Dr. Muhammad Sarwar Khan.
Material type: ; Literary form:
not fiction
Publisher: 2016Dissertation note: Wound healing is a complex process in which tissue repairs itself with the complete or incomplete regeneration. During recent years, new advances have been employed in the monarchy of tissue healing by initiation of use of platelet rich plasma (PRP) as a wound healing promoter in both soft and hard tissue surgeries. Platelet rich plasma is highly potentiated with growth and healing factors that can lead to marked acceleration in the tissue adaptation, repair and healing as compared to PRP non-facilitated healing process. This study was conducted on 16 adult healthy rabbits contributing 2 different groups, each group with 8 rabbits. Rabbits of both groups were surgically operated for skin autogenous grafting. Group A received an application of autologous PRP subcutaneously and in the surroundings of the graft defect, while group B received homologous PRP. Efficacy of both autologous and homologous PRP was evaluated on the basis of selected macroscopic and microscopic (histopathological) parameters of tissue repair and healing. The results, obtained in form of grades, were statistically analyzed by graphical representations. A successful use of autologous and homologous PRP with the desired results did not only boost up the surgical success rate in the specie under study but it opened a new vista on the same lines for other species to bring a better wound healing process. This study uprooted the conventional methods of managing wounds associated with injuries and helped the animals to get confidently satisfactory health status. Availability: Items available for loan: UVAS Library [Call number: 2452-T] (1).
