Abdul Wahid Haron

Clinico-pathology, hematology and biochemistry responses in buffaloes towards Pasteurella multocida type B: 2 immunogen lypopolysaccharide via oral and intravenous routes of infection

Haemorrhagic septicaemia is a disease caused by Pasteurella multocida serotype B: 2 and E: 2. The organism causes acute, highly fatal septicaemic disease with high morbidity and mortality in cattle and more susceptible in buffaloes. Lipopolysaccharide can be found on the outer cell wall of the organism. Lipopolysaccharide is released during multiplication which leads to inflammatory reaction. It represents the endotoxin of P. multocida type B: 2 and responsible for toxicity in haemorrhagic septicaemia which plays an important role in the pathogenesis of the disease. Therefore, the aim of this study was to investigate the clinical signs, blood parameters, gross post mortem lesions and histopathology changes caused by P. multocida type B:2 immunogen lipopolysaccharide infections initiated through intravenous and oral routes of infection. 9 buffalo heifers were divided equally into 3 treatment groups. Group 1 was inoculated orally with 10 ml of phosphate buffer saline (PBS); Group 2 and 3 were inoculated with 10 ml of lipopolysaccharide broth intravenously and orally respectively. For the clinical signs, there were significant differences (p < 0.05) in temperature between the control, intravenous and oral group. In hematology and biochemistry findings, there were significant differences (p < 0.05) in erythrocytes, haemoglobin, PCV, MCV, lymphocytes, monocytes, eosinophils, GGT and albumin between the control, intravenous and oral group. However, there were no significant differences (p > 0.05) in the MCHC, leukocytes, band neutrophils, basophils, thrombocytes, plasma protein, icterus index, total protein, globulin and A:G ratio between intravenous and oral group. For Group 2 buffaloes, there were gross lesions in the lung, trachea, heart, liver, spleen, and kidney. In contrast, lesions were only observed in the lung, trachea and liver of Group 3 buffaloes. There were significant differences (p < 0.05) in hemorrhage and congestion; necrosis and degeneration; and inflammatory cells infiltration between experimental groups and control group. However, there were no significant differences (p > 0.05) in edema lesion between groups. In conclusion, this study is a proof that oral route infection of P. multocida type B:2 immunogen lipopolysaccharide can be used to stimulate host cell responses where oral vaccine through feed could be developed in the near future.

Reproductive Pathological Changes Associated with Experimental Subchronic Corynebacterium pseudotuberculosis Infection in Nonpregnant Boer Does

Corynebacterium pseudotuberculosis causes caseous lymphadenitis (CLA), which is a contagious and chronic disease in sheep and goats. In order to assess the histopathological changes observed in the reproductive organs of nonpregnant does infected with the bacteria, 20 apparently healthy adult Boer does were divided into four inoculation groups, intradermal, intranasal, oral, and control, consisting of five goats each. Excluding the control group, which was unexposed, other does were inoculated with 107 CFU/1 mL of live C. pseudotuberculosis through the various routes stated above. Thirty days after infection, the ovaries, uterus, and iliac lymph nodes were collected for bacterial recovery and molecular detection, as well as histopathological examination. The mean changes in necrosis, congestion, inflammatory cell infiltration, and oedema varied in severity among the ovaries, uterus, and iliac lymph nodes following different inoculation routes. Overall, the intranasal route of inoculation showed more severe (p < 0.05) lesions in all the organs examined. The findings of this study have shown that C. pseudotuberculosis could predispose to infertility resulting from pathological lesions in the uterus and ovaries of does.

Clinico-pathology, hematology, and biochemistry responses toward Pasteurella multocida Type B: 2 via oral and subcutaneous route of infections

Background: Pasteurella multocida a Gram-negative bacterium has been identified as the causative agent of many economically important diseases in a wide range of hosts. Hemorrhagic septicemia is a disease caused by P. multocida serotype B:2 and E:2. The organism causes acute, a highly fatal septicemic disease with high morbidity and mortality in cattle and more susceptible in buffaloes. Therefore, the aim of this study was to investigate the clinical signs, blood parameters, post mortem and histopathology changes caused by P. multocida Type B:2 infections initiated through the oral and subcutaneous routes. Methods: Nine buffalo heifers were divided equally into 3 treatment groups. Group 1 was inoculated orally with 10 ml of phosphate buffer saline; Groups 2 and 3 were inoculated with 10 ml of 1012 colony forming unit of P. multocida Type B:2 subcutaneously and orally respectively. Results: There was a significant difference (p<0.05) in temperature between the subcutaneous and the control group. The results revealed significant differences (p<0.05) in erythrocytes, hemoglobin, packed cell volume, leukocytes, monocytes, and A: G ratio between the subcutaneous and the control group. Furthermore, there were significant differences (p<0.05) in leukocytes, band neutrophils, segmented neutrophils, lymphocytes, eosinophils, basophils, thrombocytes, plasma protein, icterus index, gamma glutamyl tranferase and A: G ratio between the oral and the control group. The post mortem lesions of the subcutaneous group buffaloes showed generalized hyperemia, congestion and hemorrhage of the immune organs, gastro-intestinal tract organs and vital organs. The oral group buffaloes showed mild lesions in the lung and liver. Histologically, there were significant differences (p<0.05) in hemorrhage and congestion; necrosis and degeneration; inflammatory cells infiltration; and edema in between the groups. Conclusion: This study was a proof that oral route infection of P. multocida Type B:2 can be used to stimulate host cell responses where oral vaccine through feed can be developed in the near future.

Stage II Keratoconjunctivitis in a Goat: A Case report

A two year old Australian Feral male goat weighing 30 kg was presented to the large animal unit of Universiti Putra Malaysia Veterinary Hospital with the clinical signs of conjunctivitis and corneal ulceration with purulent ocular discharge. A sterile swab was taken from the eyefor bacteriological culture and the culture yielded a mixed growth of Pseudomonas aeroginosa and Moraxella caprae.The conditionwas diagnosed as pink eye disease. The goat was administered 3ml of 20mg/kgoxytetracyclinesubconjunctival injection of 0.4ml, intravenous injection of 2.2mg/kg Flunixin meglumine (antipyretic) agent, topical application of terramycine eye ointment and infusion of 2L of 0.6% Nacl solution. The signs of conjunctivitis and corneal ulcersof the eye had substantially reduced five days post treatment. Quarantine of infected animals, good quality feeding and fly control wasrecommendedas preventive measures. Keywords: Pink eye, goat, Moraxella caprae, bacteriology

Parasitic Gastro-Enteritis (PGE) Concurrent with Eperythrozoonosis in a Goat: A Case Report

A 7 month-old, male Katjang cross goat weighing 35kg with body condition score of 3/5 was presented to Large Animal Ward, University Veterinary Hospital (UVH). The goat had pale mucous membrane and diarrhoea. The goat had moderate normocytic, normochromic anaemia with packed cell volume (PCV) of 0.14 (0.22-0.32) and low normal plasma protein, neutrophilia with left shift and monocytosis, including hyponatraemia, hypocalcaemia and hypoalbuminaemia with increased muscle enzyme (CK). Thin blood film stained with Geimsa showed evidence of blood parasites and mycoplasma sp. 0.1 % of RBC was infected and with high strongyle infestation (13900 epg) using modified McMaster technique. Blood transfusion was done as a result of decreased PCV value to 0.13 on the second day of hospitalization. Parasitic gastro-enteritis (PGE) concurrent with eperythrozoonosis infection was diagnosed in the goat. Keywords: Parasitic gastro-enteritis, eperythrozoonosis, anaemia, blood transfusion, PCV

Involvement of the nervous system following experimental infection with Pasteurella multocida B:2 in buffalo (Bubalus bubalis): A clinicopathological study

Haemorrhagic septicaemia (HS) is an acute, fatal, septicaemic disease of cattle and buffaloes caused by one of two specific serotypes of Pasteurella multocida B:2 and E:2 in Asian and African, respectively. It is well known that HS affect mainly the respiratory and digestive tracts. However, involvement of the nervous system in pathogenesis of HS has been reported in previous studies without details. In this study, nine buffalo calves of 8 months old were distributed into three groups. Animals of Group 1 and 2 were inoculated orally and subcutaneously with 10 ml of 1 × 10(12) cfu/ml of P. multocida B:2, respectively, while animals of Group 3 were inoculated orally with 10 ml of phosphate buffer saline as a control. All calves in Group 1 and Group 3 were euthanised after 504 h (21 day) post-infection, while calves in Group 2 had to euthanise after 12 h post-infection as they develop sever clinical signs of HS. Significant differences were found in Group 2 in the mean scores of clinical signs, gross and histopathological changes which mainly affect different anatomic regions of the nervous system. In addition, successful bacterial isolation of P. multocida B:2 were obtained from different sites of the nervous system. On the other hand, less sever, clinical, gross and histopathological changes were found in Group 1. These results provide for the first time strong evidence of involving of the nervous system in pathogenesis of HS, especially in the peracute stage of the disease.

Isolation and detection of Corynebacterium pseudotuberculosis in the reproductive organs and associated lymph nodes of non-pregnant does experimentally inoculated through intradermal route in chronic form.

Aim: Corynebacterium pseudotuberculosis is the etiological agent of caseous lymphadenitis that affects sheep and goats. This study was designed to determine the presence of the causative organism in the female reproductive organs and associated lymph nodes in non-pregnant does experimentally inoculated through intradermal route in the chronic form. Materials and Methods: 18 non-pregnant healthy Katjang does aged 2-year-old were divided randomly into two groups. The first and second group consists of nine non-pregnant does each and the two groups were subdivided into three subgroups. The first group was experimentally inoculated with 1 ml of 107cfu of live C. pseudotuberculosis through intradermal route, whereas the second group was inoculated with 1 ml phosphate buffer saline (pH 7) solution intradermally. The first group were further subdivided into three subgroups where, the first subgroup (B1) were kept for 30 days post-infection, second subgroup (B2) were kept for 60 days post-infection, and third subgroup (B3) were kept for 90 days. The second group was further subdivided into three subgroups (C1, C2, and C3) where they were kept for 39, 60, and 90 days post-infection, respectively. Results: From this study, there was successful isolation of C. pseudotuberculosis from the reproductive organs of the treatment group after 60 days post-infection. The subgroups (B1, C1, C2, and C3) did not show any presence of the causative organism in the reproductive organs. The second subgroup B2 and third subgroup B3 showed positive isolation of the causative organisms from the ovary, uterine horns, uterus, cervix, vagina, and inguinal lymph node of the experimental non-pregnant does. Conclusion: This study showed that chronic infection of C. pseudotuberculosis via intradermal route may cause effect toward the reproductive organs and may be able to influence the reproductive efficiency of the infected animals.

Clinico-Pathological Findings of Septicaemic Colibacillosis in a Calf

Colibacillosis is one of the major cause of mortality among young calves due to severe diarrhoea associated with calf scour and septicaemia. A two weeks old male Friesian cross calf weighing about 50 kg was presented to the large animal clinic of the University Veterinary Hospital with complains of yellowish-watery diarrhoea for the past two days, lethergy and recumbency. The calf was dull and depressed, diarrhoeic, dehydrated with bilateral sunken and congested eyes. Three other calves had recently died of recurring similar symptoms in the same herd. Antibiotic and fluid therapy with analgesic as adjunct treatment plan, but the calf died while being treated.The blood biochemical analysis revealed hyperkalaemia, hypocalcaemia, slightly elevated urea, creatinine and aspartate aminotransferase (AST). Necropsy findings were congestion and haemorrhage in the abomasum, jejunum and colon with sloughing off of the mucosa. The liver was pale, kidneys and heart were congested and haemorrhagic. Bacteriological examination revealed that E. coli was consistently isolated in biopsy samples of the visceral organs. Improved sanitation and provision of adequate colostrum to new-born calves have forestalled the occurrence of the disease in the herd.

A clinical case of navel and joint ill in a calf - medical management

An intensively managed five days old female Friesian cross breed calf weighing approximately 30kg was presented to the University Veterinary Hospital, Universiti Putra Malaysia (UPM). The complaint was that the calf had swollen navel and joints and had not been able to stand up properly and frequently fell down. But the calf was alert and the appetite was normal at the time of presentation. On physical examination, body condition score was 2.5 out of 5 and and temperature was 39.3 °C (slight pyrexia), pulse and respiratory rates were within the normal range. The navel was swollen with dark necrotic tissues within the navel opening with presence of foul smelling odour. Both the carpal joints of the forelimbs and the hock joints of the hind limbs were swollen. Arthrocentesis and Jugular venipuncture were performed to collect samples for synovial fluid cytology, haematology and blood chemistry. Based on the history, physical examination and laboratory findings, the calf was diagnosed to have navel ill with associated joint ill. Treatment was performed by umbilical debridement and cleaning of necrotic tissues and debris with subsequent application of povidone of iodine. Flunixin meglumine, 1.1 mg/kg, 0.7 mL, was given intramuscularly, twice daily for 3 days as analgesic, anti-inflammatory and antipyretic agent. A combination of penicillin and dihydrostreptomycin (1.2mL) at a dosage of 1 mL/25 kg body weight was administered intramuscularly, once daily for 5 days. Remarkable progressive improvement was observed 3 days after commencement of treatment. The umbilical care by debridement of necrotic tissues and debris and topical antisepsis, coupled with systemic antibiotic therapy using combination of penicillin and dihydrostreptomycin was effective in the treatment of navel ill and/or joint ill.

Stage Two Milk Fever in a Dairy Cow: A Case Report

The biological cycles of milk production and reproduction determine dairy profitability thus making management decisions dynamic and time-dependent. Metabolic diseases pose significant risk on net earnings of a dairy enterprise. We report a case of clinical hypocalcaemia (milk fever). A 7-year-old Jersey cross cow weighing 500 kg was presented with left lateral recumbency with the neck curved towards the flank. The case history indicated that the animal had calved two months ago and was semi-intensively managed. There was no history of vaccination and deworming. The daily production of milk was about 13 liters.