SUMMARY:The present observation was aimed to evaluate the gross and histometric parameters of the vesicular glands of indigenous bulls. Twenty-eight bulls of three age groups were selected from the local market: the pre pubertal group A (<1 year n=4), pubertal group B (1.5-2.5 years, n=16) and post pubertal or adult group C (above 3 years, n=8). The weight, length (anterio-posterior), width (latero-medial) and the thickness (dorso-ventral) of the both left and right vesicular glands were recorded separately after slaughter of each animal. The left and right vesicular gland shows significantly different (p<0.01), in weight and length in every group. Left vesicular glands were slightly higher than the right in all parameters. The lobules of the gland showed folded mucosa, lined with pseudostratified columnar epithelium. Three types of cells were identified in the epithelium containing A, B and C cell. Type A cells were tall columnar cells having distinct cell boundaries with the oval, round or elongated nucleus. Type B cells were located in the basal lamina having round or oval nucleus with indistinct cell boundaries. Type C cells were narrow columnar cells interspersed between A cells with darkly stained cytoplasm. Lamina propria consisted of loose connective tissue surrounded the alveoli, tubules and some solid end pieces. The numbers of secretory end pieces were variable. The diameters of luminated or non-luminated acini of the glandular end pieces and ducts were increased gradually and significantly (p<0.01) with the advancement of age. The epithelial height of the duct and alveoli were increased with the advancement of age, but no significantly differences among them. Tunica adventitia and muscularis grew with the advancement of age while the interstitial tissue shrunk equally. Above all parameters help to conclude that the vesicular glands of the pubertal indigenous bulls were more functional.
It is crucial to explore knowledge, attitudes and perceptions (KAP) about rabies among the people in the community, the personnel dealing with animal bite management and suspected rabies patients, including humans and animals, to facilitate intervention in improving rabies elimination strategies. In 2016, we conducted an interactive face-to-face survey in three different districts of Bangladesh to understand the extent of KAP towards rabies in the community peoples (CPs), human healthcare professionals (HCPs) and veterinary practitioners (VPs). A set of prescribed questions was employed to measure what proportion of each group possessed sufficient knowledge, positive attitudes and adequate perceptions about rabies. A total of 1133 CPs, 211 HCPs and 168 VPs were interviewed by using a standard questionnaire comprising both closed and open-ended questions. Of the CPs, 49% identified the disease correctly (i.e. rabies is caused by an animal bite or a scratch). Only 29% of the CPs were aware that a wound should be washed immediately with soap and water after an animal bite or a scratch. However, only 49% of the CPs, 65% of the HCPs and 60% of the VPs felt that it is important to consult a physician and receive post-exposure vaccine as the first line of treatment following an animal exposure. Among the HCPs, 23% of the respondents did not possess sufficient knowledge about animal bites as categorised by the World Health Organization (WHO), and 12% of the respondents did not possess the knowledge on how to manage an animal bite properly. Out of 52% of the VPs who previously treated suspected rabid animals, only 29% had a history of taking rabies pre-exposure prophylaxis (PEP). Lack of formal education and rural subsistence were found to largely contribute to poor rabies KAP level among the CPs ( P ≤ 0.01). There has been a high demand for proper training to be provided to HCPs and VPs for the effective management of an animal bite incidence in human and animals, respectively. Multi-sectoral collaboration through integrated One Health initiatives including community education, awareness programmes, facilitation of rabies PEP, and dog vaccination as well as its population control are critical in the way forward to control rabies in Bangladesh.
Background: Haemonchus contortus is regarded as one of the most prevalent and highly pathogenic parasite of ruminants. Vulvar flap morphology of female Haemonchus worms is useful to understand the biology of this nematode. Traits of vulvar morphology are considered as markers of ecological adaptation. A study was carried out to determine the types of vulvar flap present in female Haemonchus worms in naturally infected slaughtered goats in Northern area of Bangladesh. Methods: Abomasa of 520 goats (260 from Rajshahi and 260 from Noagon District) collected from January, 2013 through December, 2013 from different slaughter houses of northern area of Rajshahi, Bangladesh. Female Haemonchus worms were collected under a dissecting microscope and then washed under tap water to remove adhered feed residues from their body. All Haemonchus worms from each animal were preserved in 70% ethanol inside individually labeled universal bottles, until they were examined for the types of their vulvar flap. The statistical package SPSS 19 for Windows was used for data analysis. Parameters such as major vulvar morphotypes of Haemonchus spp were compared by Chi-square test in both study areas. Results: The major vulvar morph types was knobbed like (46.1%) followed by linguiform (33.5%) and smooth (20.4%). Out of 260 adult female Haemonchus worms collected from goats of Rajshahi district, 43.0% linguiform, 21.1% smooth and 35.8% knobbed vulvar morphs were identified. In Noagon district, 23.8% linguiform, 19.6% smooth and 56.5% knobbed vulvar morphs were observed. Linguiform type vulvar morphs were predominant in Rajshahi whereas knobbed type in Noagon district. Statistically significant (P<0.001) fluctuation was observed among three major vulvar flap morph types in the study areas. Sub-linguiform B (LB) was most common (96.6%) compared to Sub-linguiform A (LA); 3.4% type vulvar flap. There were no Sub-linguiform C (LC) and Sub-linguiform D (LD) types vulvar flap of Haemonchus spp detected in the study area. Conclusions: The study showed polymorphism in vulvar morphology of female Haemonchus spp of goats in selected area of Bangladesh. The morphological characters of female Haemonchus spp can help in the identification of type of species that occurs in study area.
Ticks, the notorious ectoparasite, are frequently infest cattle and cause various disease conditions and acts as vector of pathogenic organism. To determine the tick infestation in cattle of four Districts of Rajshahi Division, Bangladesh, a total of 1200 cattle (300 from each district) were randomly examined throughout the year. Four hundred ticks (100 from each district) collected from cattle were microscopically identified to determine the prevalence of specific ticks. Among the examined cattle, 433 (36.08%) were found infested with one or more species of ticks. The highest prevalence was recorded in Naogaon District (39.66%) followed by Rajshahi (37.33%), Joypurhat (34.33%) and Natore (33%). Tick infestation rate was higher (p<0.05) in rainy season (43%) followed by summer (37.75%) and winter (27.5%). Adult cattle (>5 years) were significantly (p<0.05) susceptible (41.63%) to tick infestation in comparison to young (>1-<5 years) (29.94%) and calves (<1 year) (34.13%). Significant difference (p<0.05) was observed in sex related infestation. Female were highly susceptible (48.31%) than male (19.92%). Local breed cattle were significantly susceptible (41.97%) compare to North Bengal Gray (37.28%) and cross breed (26.60%) cattle. Ear was the most favorite (72.51%) infestation site of tick whereas least was found in scrotum (5.31%). Microscopic identification revealed 5 different species of ticks. Boophilus/ Rhipicephalus microplus was the most prevalent (33.5%) species followed by Haemaphysalis bispinosa (23.50%), Amblyomma variegatum (17.25%), Rhipicephalus sanguineus (14%) and Hyalomma anatolicum anatolicum (11.75%). Notable tick infestation in cattle indicated the possibility of damaged by ticks and opportunity of transmission of pathogenic organism. Thus, an effective control strategy is warned to overcome the harmful effects of ticks on cattle. Vol. 9, No. 2, August 2022: 171-183
Avian mycoplasmosis in commercial chicken is a serious problem around the world, and responsible for high economic losses and decreased poultry productivity. This study aimed to characterize the mycoplasma infection macroscopically and microscopically in commercially important poultry like broiler and layer in Barishal, Bangladesh. Diagnosis of mycoplasmosis was made on the basis of history, clinical signs, necropsy findings and histopathology of the suspected organs. The study was conducted on a total no. of 460 birds (broiler n=237; layer n=223) of 20 different farms of three different upazillas of Barishal district in Bangladesh. The overall prevalence of micoplasmosis was 26.52%. Layer chicken (30.04%) was more susceptible to mycoplasmosis than broiler chicken (23.20%). The highest prevalence of mycoplasmosis was observed in 3-6 weeks-aged chicken in both broiler (54.55%) and layer (35.82%) chicken. A significant difference (p<0.05) was observed in mycoplasmosis prevalence rate among the seasons. The highest prevalence rate of mycoplasmosis was in winter season followed by rainy and seasons. Major necropsy findings of mycoplasmosis include catarrhal hemorrhage and mucus exudation on tracheal mucosa and severe congestion, consolidation and reddish gelatinous mass over the lung surface. Mycoplasmosis caused severe tracheitis, bronchitis, air sacculitis, and pneumonia in chickens. Mycoplasma affected different organs in the chicken and hinder the production through morbidity and mortality. Present study will provide the baseline data for future in-depth research on mycoplasmosis to draw an effective policy for controlling and eradicating mycoplasmosis from commercial poultry. Asian Australas. J. Biosci. Biotechnol. 2021, 6 (3), 153-160
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