3.
Prevalence Of Fasciolosis In Sheep And Goats Under Range Management Conditions In Azad Jammu And Kashmir
by Imtiaz Ahmad (2009-VA-535) | Prof. Dr. Aneela Zameer Durrani | Prof. Dr. Muhammad S. Anjum | Prof. Dr. Kamran Ashraf.
Material type: Book; Literary form:
not fiction
Publisher: 2015Dissertation note: Fasciolosis is the disease of sheep, goats, cattle and other ruminants. Human and equines are unusual hosts in which instead of liver the flukes may found in lungs or under the skin. Transmission depends on an intermediate host lymnae snail. Animal ingest metacercaria, the worm migrates to the liver where it causes extensive damage and mature worm lives in bile duct. The disease occurs as an acute, sub-acute or chronic infection. Chronic Fasciolosis characterized by anemia, hypoalbuminaemia, emaciation, submandibular edema and loss of condition. Clinical disease is well known but sub clinical infections are often unnoticed, leading to marked economic losses, reduced milk yield, weight loss, reduced fertility and immunity, consequently leading to significant economic losses. Fasciolosis has recently been recognized as an emerging zoonotic disease. Infections in human may be asymptomatic but sometimes nonspecific pain in abdomen, anorexia, dyspepsia and vomiting may occur. Pain in right hypochondrium, epigastrium and jaundice occurs in chronic phase. Sometimes ectopic migration of worm causes abscesses in many organs.
The present study investigates the prevalence of Fasciolosis in sheep and goats at different geographic locations on the basis of altitudes in Azad Jammu and Kashmir. 4662 (sheep n=2242; goat n=2420) fresh fecal samples from sheep and goats were collected from three village/towns each of Mirpur, Poonch and Muzaffarabad Divisions. Stool samples were collected from 566 pastoral families of AJK to determine the zoonotic potential of the disease. Prevalence of the disease was calculated on the basis of centrifugal floatation and sedimentation techniques.
The intensity of infection was calculated using the McMaster egg counting technique. The risk factors of the disease studied included altitude, season, sex, age, and effect of deworming and flock size on the rate of prevalence. An overall prevalence was recorded as
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17.88%. Prevalence of Fasciolosis in sheep revealed 26.49% and that of goats 9.91%. The data was analyzed using Chi-square test which revealed a significant difference (P<0.05) in the prevalence of the disease in sheep and goats. The overall prevalence rate in both species was recorded as15.09% at altitude <3000 feet, 25.00% at 3000-6000 and 15.74% at >6000. The highest prevalence was recorded at an altitude 3000-6000 feet. Chi- square values showed significant difference (P<0.05) among three different altitudes. The altitude of 3000-6000ft showed a significantly higher (P<0.05) prevalence of Fasciolosis in sheep and goats. The overall prevalence showed 13.93% rates in spring and 21.77% in autumn. Chi-square values showed a significant difference (P<0.05) in the prevalence of the disease, higher in autumn than Spring. Sex wise prevalence showed 16.67% in male and 18.59% in female animals. The data showed no significant difference (P>0.05) in Chi-square analysis. The prevalence of the disease in the age group below 1 year was 04.40%, 1-4 years revealed 17.73% disease and 36.18% in >4 year. The data showed significantly different (P<0.05) rates in all age groups. Highest prevalence was recorded in sheep and goats above 4 year of age and lowest in those below 1 year. The prevalence in animals with no recent history of deworming was recorded 23.22%. The data showed 15.37% disease in small flocks of sheep and goats <30 as compared to 18.72% in large flocks >30. Chi-square showed a significantly higher (P<0.05) prevalence of the disease in large flocks.
Generalized Linear Model (GLM) was used to evaluate the contribution of risk factors (epidemiological factors) to the variations in the prevalence of Fasciolosis in sheep and goats. All the epidemiological factors i.e. altitude, species, season, gender, age group, deworming and flock size were processed. The deworming appeared to be the most significant factor in the model contributing maximum variations in disease with highest Odds followed by age groups,
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species, season, altitude, flock size and gender. The risk factors for the Fasciolosis in sheep and goats were found, lack of practice of deworming, age group >4 year, species sheep, season Autumn, altitude 3000-6000 and flock size >30. The 75% of the disease prevalence was due to above mentioned risk factors. The deworming, specie goat, age group <1 year, season Spring, altitude <3000, and flock size less than 30 were appeared to be the protective factors in the Generalized Linear Model.
The intensity of infection was analyzed through Factorial analysis for difference in species, altitude and season. The difference in eggs per gram of feces was found significantly different (P<0.05) in sheep and goats. The effect of season on egg per gram (EPG) of feces showed a higher mean values in sheep (191.49) and goats (219.72) in Autumn as compared to 158.04 and 180.61 in Spring. In both seasons the mean for goats was found higher than sheep. The effect was found significant (P<0.05), higher during Autumn. Factorial analysis of the data showed significant interaction (P<0.05) between species and altitude. The data showed mean values for sheep 174.04, 191.87 and 168.33 at altitude <3000, 3000-6000 and >6000 feet respectively. The mean values for goats were 232.22, 194.95 and 170.59. The data revealed higher mean for goats as compared to sheep on all three altitudes. Goats revealed significantly higher (P<0.05) number of EPG. POST HOC Tukeys test showed a non-significant difference in intensity of disease between <3000 and 3000-6000 feet, rest of the differences were significant (P<0.05).
The overall prevalence in pastoral communities of AJK was 0.88%. The samples were collected from male and female of 4 age groups <10 year, 11-20, 21-40 and >40. The prevalence in male was 0.76 and in female was 0.98%. The data showed that age groups below 20 year were
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the susceptible groups in both sexes. The highest prevalence (2.25%) was found in female age group 11-20 year. Age groups above 20 year did not revealed any positive sample.
227 adult liver flukes were collected from livers of infected animals of different animal species (sheep, goats. cattle and buffaloes) and geographic locations for morphometric and molecular identification of the species of Fasciola. Flukes were identified on the basis of measurements of body length, body width, diameter of suckers, distance between oral and ventral sucker and distance between ventral sucker and posterior end of the body. The measurements of F. hepatica showed a body length range 13-34mm with an average length of 21.51mm whereas, F. gigantica ranged from 28-52mm with an average of 42.27mm. The average body lengths of F. hepatica below 3000ft was 21.9, at 3000-6000ft was 21.07 and above 6000 ft was 22.00mm and that of F. gigantica was 42.05 and 42.44mm at 3000 and 3000-6000 feet. The measurements of F. hepatica revealed an average body width of 10.05mm, average diameter of oral and ventral suckers of 0.74 and 1.28mm respectively and average distance between the two suckers of 1.34mm. The readings for F. gigantica were 9.46, 0.89, 1.55 and 1.72mm respectively. Average distance between ventral sucker and posterior end of the fluke in case of F. hepatica was 18.35mm at all three altitudes and host species of animals and it was 38.26mm in case of F. gigantica. The overall mean worm load was 13.56 worms per liver of animal with a range 5-26. The mean worm load of F. hepatica was 10.9 and that of F. gigantica 13.11. Mixed infections were noted at altitudes below 6000 ft. Infestation with F. gigantica was not found at altitudes above 6000ft and F. hepatica was encountered at all three altitudes. 51.98% of the recovered flukes were F. gigantica which showed the equal chances of infection with either species of Fasciola in AJK. The results revealed that F. hepatica was the fluke affecting animal population at altitude above 6000 ft and F. gigantica was the major fluke below
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3000 ft. At altitudes between 3000-6000ft, 36.20% of flukes were F. hepatica while its prevalence was reduced to 17.30% below 3000 ft. Once the species of the liver flukes were identified morphologically they were subjected to molecular conformation through amplification of the genomic DNA of the two species through PCR using two sets of species specific primers. In the PCR based on primer set 1, a product of 391 bp was generated from the genomic DNA of Fasciola hepatica whereas no product was generated from the DNA of Fasciola gigantica. PCR based on primer set 2 amplified a 235-bp product from the DNA of Fasciola gigantica. The molecular identification in the present study showed that morphometric identification of the two species is valid and standard population of both species were found present at different geographic locations and species of the animals of the state of Azad Jammu and Kashmir except F. gigantica not found above 6000 feet altitude.
The ethno veterinary practices for Fasciolosis were documented through Participatory Rural Appraisal. A total of 173 respondents/key informants were interviewed during the study period in the study area. The majority of the traditional healers (n=33) elders of pastoral families (n=53) and sheep/goats owners (n=56) were above the age of 40 year. Veterinary officers (n=6) and assistants (n=25) were interviewed as a part of verification process. 31.69% of the respondents were found using allopathic anthelmintic along with ethno veterinary medicines. 53.52% of the respondents were using ethno veterinary medicines because of non-availability or cost effectiveness of allopathic anthelmintic. 95.18% of the respondents were using plants or part of the plant as traditional anthelmintic in their sheep or goats.18 plant families were identified during the survey which include Acanthaceae, Asclepiadaceae, Asteraceae, Berberidaceae, Boraginaceae, Cannabinaceae, Chenopodaceae, Euphorbiaceae, Fabaceae,
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Gentianaceae, Juglandaceae, Liliaceae, Malvaceae, Oxalidaceae, Punicaceae, Rhamnaceae, Scrophulariaceae, Solanaceae. The species of medicinal plants identified during the study were Berberis lyceum, Nicotiana tabacum, Asparagus officinale, Calotropis procera, Aloe vera, Mallotus philippensis, Adhato davesica, Artemisia scoparia, Xanthium strumarium, Chenopodium ambrosoides, Artimisia maritime, Verbascum Thapsus, Acacia Arabica, Cordlia myxa, Cannabis sativa, Rhamnus purpurea, Juglansregia, Oxalis corniculata, Punica granantum, Artimisa fragrans, Swertia petiolata and Abutilon indicum. Availability: Items available for loan: UVAS Library [Call number: 2430-T] (1).
6.
Sero-Epidemiology Of Johne’s Disease Along With Its Effect On Serum Biochemical Profile In Cattle In District D.I. Khan, Khyber Pakhtunkhwa
by Nasrullah (2009-VA-90) | Prof. Dr. Aneela Zameer Durrani | Dr. Waseem Yaqub | Dr. Mamoona Chaudhry.
Material type: Book; Literary form:
not fiction
Publisher: 2016Dissertation note: Johne’s disease (JD) or Paratuberculosis caused by Mycobacterium avium subsp.
Paratuberculosis (MAP) is characterized by an incubation period of several years. It is a chronic
non-treatable disease of animals causing enteritis which ultimately leads to economic losses to
dairy and meat industries worldwide. To estimate sero-epidemiology of the JD through ELISA is
inexpensive, efficient, single step and sensitive for the detection of antibodies in cattle and
buffaloes. So, keeping in view the economic and public health significance of the disease, the
present study was designed with the objective to estimate the sero prevalence of JD using
indirect ELISA and to quantify the effect of JD on the level of serum proteins in cattle of D. I.
Khan district, Khyber Pakhtunkhwa Province. Johne’s disease is prevalent in cattle of D I Khan
that affects serum proteins level in dairy animals.
For the study animals were well restrained and about 5 ml blood was collected in Non-
EDTA coated vacutainer from the jugular vein of each animal using 5 ml disposable syringe,
after collection and proper labeling samples were transferred in Ice packed cooler to
Microbiology laboratory, Govt. College of Veterinary Sciences D.I Khan. Serum was collected
at the top of the vacutainer with the help of disposable pipette and was stored in eppendorf tubes
in deep freezer until transported to University of Veterinary and Animal Sciences, Lahore for
further analysis. Data was captured on questionnaires about the clinical signs and symptoms,
management practices and possible risk factors associated with Johne’s disease, was obtained
from the owners.
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40
The collected serum samples were analyzed by Indirect ELISA using commercial ELISA
kit (Mycobacterium Paratuberculosis Antibody Test Kit, IDEXX, USA) according to
manufacturer instructions.
The ELISA positive samples were processed further for the estimation of serum protein analysis
using Biuret method (Doumas et al. 1981;Spencer and Price. 1977).The serum albumin was
determined by Photometric colorimetric test (Bromocresole green (BCG) method (Spencer and
Price. 1977).The globulin will be estimated by subtracting serum albumin from serum total
proteins (Javed et al. 2010).
Data regarding sero-prevalence by indirect ELISA were analyzed through Pearson's Chisquare
Test, while data regarding the effect on serum protein was analyzed by simple t-test using
statistical package for social sciences (SPSS) version 20. P < .05 was considered significant.
The present study demonstrated (12.7%) prevalence of MAP in cattle population of D.I
Khan. There were no significant effect of MAP on serum biochemical profile. The results of all
variables studied as under breed, gender, age, vaccinated status and management system. The
most frequent level was observed in females 13.7% as compared to males 0% (0/4). Among
different age groups, higher sero-prevalence 33.3% were present at age group above 6 years
while sero-prevalence of 7.1% in 2-3 years and 0% were recorded in age group 4-6 years.
Statistically a significant different were present between these groups. Moreover, there was no
relationship of vaccination status with disease because the prevalence recorded 16.6% and
vaccinated cases positive were recorded 0% but there was no significance difference among two
groups of animals. Breed wise risk factor statistically significant because the MAP cases were
highly prevalent in non-descript cattle 25% as compared to crossbred 5.8% and Sahiwal 0%
cattle breed. BCS category I had highest prevalence 66.6% while in BCS category II prevalence
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41
was 23.8% and in BCS category III the prevalence was 0% recorded. Statistically the BCS of the
disease animals was significantly associated. Highest prevalence 100% were recorded above 60
days of diarrhea duration while 0% were recorded less than 60 days of diarrhea duration.
Statistically the sero-prevalence of diarrhea duration was highly significant. Management wise
sero-prevalence of Johne’s disease on the type of housing was higher in open 19.2% as compared
to confined 6.8% showing non-significant difference statistically. Sanitation wise seroprevalence
were higher in poor 19.2% as compared to good sanitation 6.8% showing also nonsignificant
difference statistically. Sero-prevalence of disease was less in well water 0% as
compared to tap water 25% showing there were a significant difference between the seroprevalence
of Johne’s disease under different water conditions. The results of total protein
analysis was statistically non-significant. Availability: Items available for loan: UVAS Library [Call number: 2526-T] (1).
8.
Immunotherapeutictrials Of Newcastle Disease In Domestic Pigeons
by Mohsin Hassan (2009-VA-391) | Dr. Saeed Saleem Ahmad | Dr. Muhammad Avais | Prof. Dr. Khushi Muhammad.
Material type: Book; Literary form:
not fiction
Publisher: 2016Dissertation note: Pigeon belongs to the avian family, Columbidae with in the order Columbiformes.
They are strong kept by the humans for variety of purposes such as food, hobby(racing) and
treatment of various diseases. However, pigeons are susceptible to a variety of diseases, but
viral diseases are more common. Newcastle disease (ND) is an acute, highly contagious viral
disease in birds, which can cause high level (up to 100%) mortality in chickens, the most
important natural host of the disease, but it can also affect a wide variety of avian species,
causing severe disease.
This disease is endemic in Pakistan and has a huge impact on the poultry industry.
Besides vaccination if hyper immune yolk is properly harvested and purified it can be used in
field condition for the treatment of infected birds .Therefore this study had been conducted to
check the effectiveness of hyper immune yolk in treatment of experimentally infected
birds.Suitability in usage of hyperimmune yolk in field condition aginst NewCastle
Disease.In order to get the hyper immune yolk 10 eggs from Big Bird hatchery were
collected.Antibody titer against NDV in egg yolk was determined by Haemagglutination
inhibition test HI their titer was 1:512 which was significant for trial.Birds were separated
into five groups A, B, C, D and E. They were challenged with NDV and treated with hyper
immune yolk in different concentration.Group A was given hyper immune yolk first then
after 24 hour NDV was given, Antibody titers at different days were calculated .Geometric
Mean Titer (GMT) values of Heamagglutination Inhibition (HI) test against NDV at day 0,
10, and 22 were log2
`2.23, log2 3.23, and log2 3.18 respectively.Group B hyper immune yolk
and NDV were given simultaneously in group the GMT values of Heamagglutination
Inhibition (HI) test against NDV at day 0, 10, and 22 were log2 log2 2.35, and log2 3.19 an
log2 3.22 respectively.Group C NDV was given first then after 24 hour hyper immune was
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41
injected intramuscularly. Geometric Mean Titer (GMT) values of Haemagglutination
Inhibition (HI) test against NDV at day 0, 10, and 22were log2, log2 2.47, and log2 2.99 and
log23.16 respectively.In Group D NDV given first then after signs and symptoms hyper
immune yolk was injected.GMT values of Heamagglutination Inhibition (HI) test against
NDV at day 0, 10, and 22 were log2 2.30 log2 2.83, and log2 3.06 respectively was
calculated.Group E was kept as positive control it was infected with NDV only the GMT
values of Heamagglutination Inhibition (HI) test against NDV at day 0, 10, and 22 were
log22.13 log2 0.00, and log2 0.00 respectively was calculated. The hyper immune yolk
containing 32 units against NewCastle Disease virus was injected in group A and B induced
80% protection.The yolk containing 64 units of antibodies was given in the group C resulted
into 60% protection.Hyper immune yolk consisting 128 units of antibodies injected in the
group D,in which clinical sign and symptoms of disease were shown given 60% protection
against the New Castle Disease. From this experiment it is inferred that usage of 128 units of
antibodies can induce protection against NDV infected birds and 32 and 64 units of HIY can
be used as prophylactic measure. Availability: Items available for loan: UVAS Library [Call number: 2532-T] (1).