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Pattern of antimicrobial usage in livestock animals in south-western Nigeria: The need for alternative plans
2015
Hezekiah K. Adesokan | IfeOluwapo O. Akanbi | Ibikunle M. Akanbi | Ruth A. Obaweda
Resistance to antibiotics has continued to increase, placing future animal and human disease management in real danger. The developing countries characterised by widespread indiscriminate antibiotic use and in which ‘third-generation’ antibiotics are not readily available or affordable are the worst affected. A 3-year (2010–2012) retrospective survey of antibiotic usage in livestock production in three selected states of south-western Nigeria was conducted. Data obtained from eight purposively selected licensed veterinary pharmaceutical sales establishments in the area, based on keeping detailed sales records for the study period, were analysed using Stata Version 12. Results showed that tetracyclines (33.6%), fluoroquinolones (26.5%) and beta-lactams/aminoglycosides (20.4%) constituted the majority of the antibiotics used over the 3 years. The differences in the quantities of antibiotic types used within each antimicrobial class were statistically significant for tetracyclines (F = 59.87; p < 0.0001) and fluoroquinolones (F = 43.97; p < 0.0001) but not for beta-lactams/aminoglycosides (F = 3.21; p = 0.148). Furthermore, antibiotic consumption increased by 40.4% between 2010 and 2012. Although statistically insignificant (F = 0.277; p = 0.762), the increasing trend across the years was at rates of 23.5% between 2010 and 2011 and 13.8% between 2011 and 2012. In addition, the findings show a significantly higher consumption rate (t = 15.21; df = 5; p < 0.0001) during the rainy (52.5%) than the dry (47.5%) seasons. The current increasing trend in antibiotic usage holds a serious danger for the future and therefore calls for alternative plans to safeguard future livestock production, food security and human health. This becomes more imperative considering emerging resistance against tetracyclines and fluoroquinolones, the foremost remedies for livestock diseases in most developing countries.
Show more [+] Less [-]Serological survey of antibodies to <i>Toxoplasma gondii</i> and <i>Coxiella burnetii</i> in rodents in north-western African islands (Canary Islands and Cape Verde)
2015
Pilar Foronda | Josué Plata-Luis | Borja del Castillo-Figueruelo | Ángela Fernández-Álvarez | Aarón Martín-Alonso | Carlos Feliu | Marilena D. Cabral | Basilio Valladares
Coxiella burnetii and Toxoplasma gondii are intracellular parasites that cause important reproductive disorders in animals and humans worldwide, resulting in high economic losses. The aim of the present study was to analyse the possible role of peridomestic small mammals in the maintenance and transmission of C. burnetii and T. gondii in the north-western African archipelagos of the Canary Islands and Cape Verde, where these species are commonly found affecting humans and farm animals. Between 2009 and 2013, 108 black rats (Rattus rattus) and 77 mice (Mus musculus) were analysed for the presence of Coxiella and Toxoplasma antibodies by enzyme-linked immunosorbent assay (ELISA) and indirect immunofluorescence (IFA), respectively. Our results showed a wide distribution of C. burnetii and T. gondii, except for T. gondii in Cape Verde, in both rodent species. The overall seroprevalence of C. burnetii antibodies was 12.4%; 21.1% for Cape Verde and 10.2% for the Canary Islands. With respect to T. gondii, seropositive rodents were only observed in the Canary Islands, with an overall seroprevalence of 15%. Considering the fact that both pathogens can infect a large range of hosts, including livestock and humans, the results are of public health and veterinary importance and could be used by governmental entities to manage risk factors and to prevent future cases of Q fever and toxoplasmosis.
Show more [+] Less [-]Parasites of pigs in two farms with poor husbandry practices in Bishoftu, Ethiopia
2015
Jufare, Alemnesh(Alage Agricultural Technical Vocational Education Training College) | Awol, Nesibu(Mekelle University College of Veterinary Medicine) | Tadesse, Fanos(Addis Ababa University College of Agricultural and Veterinary Medicine) | Tsegaye, Yisehak(Mekelle University College of Veterinary Medicine) | Hadush, Birhanu(Mekelle University College of Veterinary Medicine)
A cross-sectional study was conducted from November 2011 to April 2012 on a total of 384 pigs from two privately owned intensive farms in Bishoftu, Ethiopia. The objectives of the study were to identify and determine the prevalence of common parasites of pigs. For the determination of gastrointestinal (GIT) parasites, faecal samples were collected from the study animals and subjected to standard parasitological examination techniques. Physical examination was conducted for the presence of skin parasitic lesions and skin scrapings were collected to determine prevalence of ectoparasites. The overall prevalence of GIT parasites in the pigs was 25% (96/384). Examination of faecal samples revealed the ova or oocysts of four different gastrointestinal parasites, namely Coccidia (12%), Strongyles (5.2%), Ascaris suum (4.9%) and Trichuris suis (2.9%). Mixed infection by at least two parasite species was observed in 3.65% (14/384) of the pigs. The only ectoparasite species identified was Sarcoptes scabiei var. suis, with a prevalence of 2.6%. This study indicates that pig parasites are a major problem in the study area, hence implementation of strategic control measures and appropriate hygienic management systems are recommended to reduce the prevalence of parasites.
Show more [+] Less [-]Safety and immunogenicity of Onderstepoort Biological Products' Rift Valley fever Clone 13 vaccine in sheep and goats under field conditions in Senegal
2015
Lo, Modou M.(Institut Sénégalais de Recherches Agricoles Laboratoire National de l'Elevage et de Recherches Vétérinaires) | Mbao, Victor(Global Alliance for Livestock Veterinary Medicines) | Sierra, Pascale(Independent Veterinary Consultant) | Thiongane, Yaya(Institut Sénégalais de Recherches Agricoles Laboratoire National de l'Elevage et de Recherches Vétérinaires) | Diop, Mariame(Institut Sénégalais de Recherches Agricoles Laboratoire National de l'Elevage et de Recherches Vétérinaires) | Donadeu, Meritxell(Global Alliance for Livestock Veterinary Medicines) | Dungu, Baptiste(Global Alliance for Livestock Veterinary Medicines)
This blinded field safety study was conducted in Senegal to assess safety and immunogenicity of administration of the registered dose of Rift Valley fever virus (RVFV) Clone 13 vaccine (Onderstepoort Biological Products) to sheep and goats of West African breeds under natural conditions. A total of 267 small ruminants (220 sheep, 47 goats) were included; half received RVFV Clone 13 vaccine at the recommended dose and half received the diluent (as placebo) only. The study was performed on three commercial farms in the northern and eastern region of Senegal in accordance with veterinary good clinical practices. The animals were observed daily for 3 days after vaccination, and then weekly for 1 year. In both sheep and goats vaccinated against RVFV seroconversion rates above 70% were recorded. No seroconversion related to RVFV was observed in placebo-treated animals. No statistically significant differences were determined between placebo and vaccinated groups for mean rectal temperatures for the first 3 days after administration (p > 0.05). No abnormal clinical signs related to treatment were noted, and only one slight injection site reaction was observed in one vaccinated animal for 2 days after vaccination. Out of 176 births assessed over 1 year (93 from the vaccinated group, 83 from the placebo group), 9 were abnormal in the placebo group and 3 in the vaccinated group (p > 0.05). The frequency of adverse events was similar in the placebo and vaccinated groups. RVFV Clone 13 vaccine administered according to the manufacturer's instructions was safe and well tolerated in West African breeds of sheep and goats, including animals of approximately 6 months of age and pregnant females, under field conditions in Senegal. Antibody levels persisted up to 1 year after vaccination.
Show more [+] Less [-]The slaughter of increased numbers of pregnant cows in Tanga abattoir, Tanzania: A cause for concern?
2015
Swai, Emmanuel S.(Ministry of Livestock Development and Fisheries) | Hayghaimo, Abdu A.(Ministry of Livestock Development and Fisheries) | Hassan, Ayubu A.(Tanga Municipal Livestock Office) | Mhina, Bartholomeo S.(Tanga Municipal Livestock Office)
Information on the level of foetal wastage in slaughtered cattle in Tanzania is limited. A three-month observational study (April - June 2014) of animals slaughtered at the Tanga abattoir in Tanga region, Tanzania was carried out to determine the number of pregnant cows slaughtered. The total number of cattle slaughtered during the study period was 3643, representing a monthly kill average of 1214 and a daily kill average of 40. Over 98% of the cattle presented to the abattoir for slaughter were local breed (Tanzania shorthorn zebu) and most were above 3 years of age. Improved breeds of cattle represented only 1.3% of all slaughters. Of the cattle slaughtered, 2256 (61.9%) were female and 1387 (38.1%) were male. A total of 655 slaughtered cows were pregnant, representing a foetal wastage of 29.1%. Of the 655 recovered foetuses, 333 (50.8%) were male and 322 (49.2%) were female. Of the recovered foetuses, 25.8% were recovered in the first, 42.7% in the second and 31.6% in the third trimester. This study indicates cases of significant foetal losses, negatively impacting future replacement stock as a result of the slaughter of pregnant animals. The indiscriminate slaughter of pregnant cows suggests that existing animal welfare legislation is not sufficiently enforced and routine veterinary ante-mortem inspection of trade animals is failing to prevent the high level of foetal wastage.
Show more [+] Less [-]Equine encephalosis in Thoroughbred foals on a South African stud farm
2015
Grewar, John D.(Western Cape Department of Agriculture ,University of Pretoria Department of Production Animal Studies) | Thompson, Peter N.(University of Pretoria Department of Production Animal Studies) | Lourens, Carina W.(University of Pretoria Equine Research Centre) | Guthrie, Alan J.(University of Pretoria Equine Research Centre)
Thoroughbred foal body temperature data were collected from shortly after birth until shortly after weaning during the 2007/2008 season on a stud farm in the Western Cape Province of South Africa. Equine encephalosis (EE) caused by EE virus (EEV) serotype 4 (EEV-4) occurred in the foal group during the first autumn after their birth (March and April 2008). A descriptive study was undertaken to provide data on the EEV maternal antibody status, the association between pyrexia and EEV infection, and the incidence of infection amongst the foals prior to and during the episode. This included the frequent capturing of foal body temperature data and regular collection of serum and whole blood during pyretic episodes. Infection by EEV was determined using both virological and serological methods. A high EE incidence of at least 94% occurred amongst the foal cohort, despite the fact that 37% of foals had previously shown maternal antibody to EEV-4. Pyrexia in foals was not directly associated with EE infection and 41% of infected foals showed no detectable pyretic episode. Information obtained from this EE episode showed the high incidence of EEV infection in foals during the first autumn after their birth. Monitoring foal body temperature can alert farmers to outbreaks of infectious disease, such as EE. These results are relevant to the epidemiology of EE and facilitate greater understanding of it as a differential diagnosis of African horse sickness (AHS), given that EE and AHS have similar epidemiologic profiles.
Show more [+] Less [-]Cats and Toxoplasma gondii: A systematic review and meta-analysis in Iran
2015
Rahimi, Mohammad T.(Mazandaran University of Medical Sciences Toxoplasmosis Research Centre ,Mazandaran University of Medical Sciences Sari Medical School Department of Parasitology and Mycology) | Daryani, Ahmad(Mazandaran University of Medical Sciences Toxoplasmosis Research Centre ,Mazandaran University of Medical Sciences Sari Medical School Department of Parasitology and Mycology) | Sarvi, Shahabeddin(Mazandaran University of Medical Sciences Toxoplasmosis Research Centre ,Mazandaran University of Medical Sciences Sari Medical School Department of Parasitology and Mycology) | Shokri, Azar(Mazandaran University of Medical Sciences Toxoplasmosis Research Centre ,Mazandaran University of Medical Sciences Sari Medical School Department of Parasitology and Mycology) | Ahmadpour, Ehsan(Mazandaran University of Medical Sciences Toxoplasmosis Research Centre ,Tabriz University of Medical Sciences Infectious and Tropical Diseases Research Centre) | Teshnizi, Saeed H.(Hormozgan University of Medical Science Paramedical School) | Mizani, Azade(Mazandaran University of Medical Sciences Toxoplasmosis Research Centre ,Mazandaran University of Medical Sciences Sari Medical School Department of Parasitology and Mycology) | Sharif, Mahdi(Mazandaran University of Medical Sciences Toxoplasmosis Research Centre ,Mazandaran University of Medical Sciences Sari Medical School Department of Parasitology and Mycology)
Toxoplasma gondii is a cosmopolitan zoonotic intracellular coccidian of the phylum Apicomplexa infecting warm-blooded animals and human beings. This protozoan causes a significant public health problem in humans and imposes considerable economic losses and damages to husbandry industries. The final host, cats, accounts for all of these significant burdens. Hence the present study was designed to analyse and review the overall prevalence rate of T. gondii infection in cats in Iran for the first time. In the present study data collection (published and unpublished papers, abstracts of proceedings of national parasitology congresses and dissertations) was systematically undertaken on electronic databases including PubMed, Google Scholar, Ebsco, Science Direct, Scopus, Magiran, Irandoc, IranMedex and Scientific Information Database. A total of 21 studies from 1975 to 2013 reporting prevalence of Toxoplasma infection in cats from different areas in Iran met the eligibility criteria. The pooled proportion of toxoplasmosis using the random-effect model amongst cats was estimated at 33.6% (95% confidence interval [CI] 22.05-46.41). The prevalence rate of cat toxoplasmosis in various regions of Iran ranged from 1.2% to 89.2%. Firstly, this study establishes a crude prevalence rate of T. gondii infection in cats. Secondly, it discusses the role of significant risk factors including sex, age and being either household or stray cats, in the epidemiology of the disease. Furthermore, the current study determines gaps and drawbacks in the prior studies that are useful to keep in mind to assist in designing more accurate investigations in future.
Show more [+] Less [-]First molecular isolation of Mycoplasma ovis from small ruminants in North Africa
2015
Rjeibi, Mohamed R.(Université de la Manouba Laboratoire de Parasitologie ,École Nationale de Médecine Vétérinaire de Sidi Thabet) | Darghouth, Mohamed A.(Université de la Manouba Laboratoire de Parasitologie ,École Nationale de Médecine Vétérinaire de Sidi Thabet) | Omri, Houda(Université de la Manouba Laboratoire de Parasitologie ,École Nationale de Médecine Vétérinaire de Sidi Thabet) | Souidi, Khemaïs(Université de la Manouba Laboratoire de Parasitologie ,École Nationale de Médecine Vétérinaire de Sidi Thabet) | Rekik, Mourad(International Centre for Agricultural Research in the Dry Areas) | Gharbi, Mohamed(Université de la Manouba Laboratoire de Parasitologie ,École Nationale de Médecine Vétérinaire de Sidi Thabet)
Eperythrozoonosis is a small ruminant disease caused by the bacterium Mycoplasma ovis (formerly known as Eperythrozoon ovis). Whilst acute infection in sheep may result in an anaemia and ill thrift syndrome, most animals do not develop clinical signs. Molecular methods were used to compare and evaluate the prevalence of infection with M. ovis in sheep and goats in Tunisia. A total of 739 whole blood samples from 573 sheep and 166 goats were tested for the M. ovis 16S rRNA gene using PCR. The overall prevalence was 6.28% ± 0.019 (36/573). Only sheep were infected with M. ovis (p< 0.001), and the prevalence was significantly higher in central Tunisia (29.2%) compared with other regions (p < 0.05). The prevalence revealed significant differences according to breed and bioclimatic zones (p < 0.001). Furthermore, the prevalence in young sheep (35/330; 10.6%) was higher than in adults (1/243; 0.41%) (p < 0.001). Only sheep of the Barbarine breed were infected, with a prevalence of 11.8% (p < 0.001). This is the first molecular study and genetic characterisation of M. ovis in North African sheep breeds.
Show more [+] Less [-]Effective DNA extraction method to improve detection of Mycobacterium avium subsp. paratuberculosis in bovine feces
2015
Park, H.T., Seoul National University, Seoul, Republic of Korea | Shin, M.K., Seoul National University, Seoul, Republic of Korea | Sung, K.Y., Seoul National University, Seoul, Republic of Korea | Park, H.E., Seoul National University, Seoul, Republic of Korea | Cho, Y.I., (Department of Animal Resources Development, National Institute of Animal Science, Rural Development Administration, Cheonan, Republic of Korea | Yoo, H.S., Seoul National University, Seoul, Republic of Korea
Paratuberculosis caused by Mycobacterium avium subsp. paratuberculosis (MAP) has extended latent periods of infection. Due to this property, difficulties in the detection of fecal shedder have been raised. A newly designed method for DNA extraction from fecal specimens, mGITC/SC was evaluated in terms of diagnostic efficiency. The detection limit of IS900 real-time PCR was about 50 MAP (1.5 cfu) in 250 mg of feces (6 cfu per g). Also, this DNA extraction method was faster and cheaper than that using commercial kit or other methods. Consequently, the mGITC/SC is an economical DNA extraction method that could be a useful tool for detecting MAP from fecal specimens.
Show more [+] Less [-]Trichophyton mentagrophytes infection in an African lion cub (Panthera leo) and transmission to a zookeeper
2015
Kim, K.T., Animal Health Center, Zoo Land, Daejeon O-World Theme Park, Daejeon, Republic of Korea | Lee, S.H., College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea | Kwak, D., College of Veterinary Medicine, Kyungpook National University, Daegu, Republic of Korea
Dermatophytosis was found on the right front leg of a 4-month-old female African lion cub (Panthera leo) kept at a zoo with locally marginal alopecia. For diagnosis, culturing on sabouraud dextrose agar was performed and skin scrapings from the lesion were analyzed. The ones from the culture and skin scrapings were identified as Trichophyton mentagrophytes. A zookeeper that had been in contacted with the lion for artificial rearing developed skin lesions with well-defined erythematous plaques on the right arm about 1 month after the lesion in the lion was observed. The ringworm was probably transmitted from the lion through continuous contact.
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