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Aflatoxicoses: prejuízos causados ao desempenho zootécnico de frangos de corte, boas práticas agrícolas e métodos biológicos de detoxificação | Aflatoxicosis: losses in poultry performance, agricultural good practices and biological methods of detoxification Texte intégral
2014
Carão, Ágatha Cristina de Pinho | Albuquerque, Ricardo de | Oliveira, Carlos Augusto Fernandes de | Ribeiro, Pedro de Assunção Pimenta | Merseguel, Carlos Eduardo Bellinghausen | Andrade, Karen
Aflatoxicoses: prejuízos causados ao desempenho zootécnico de frangos de corte, boas práticas agrícolas e métodos biológicos de detoxificação | Aflatoxicosis: losses in poultry performance, agricultural good practices and biological methods of detoxification Texte intégral
2014
Carão, Ágatha Cristina de Pinho | Albuquerque, Ricardo de | Oliveira, Carlos Augusto Fernandes de | Ribeiro, Pedro de Assunção Pimenta | Merseguel, Carlos Eduardo Bellinghausen | Andrade, Karen
As aflatoxicoses são micotoxicoses causadas por toxinas produzidas por estirpes de fungos do gênero Aspergillus. Causam prejuízos importantes à produção animal, em especial àquelas que têm nos grãos sua matéria-prima base para preparação de ração, como a avicultura de corte. Atualmente, diversas técnicas, tais como uso de substâncias químicas, métodos físicos, estratégias de colheita, armazenagem e processamento de alimentos, estão sendo estudadas para que se diminua e, se bem aplicadas, evite os efeitos deletérios causados por essas substâncias à saúde animal. O objetivo desta revisão é descrever os principais efeitos das aflatoxinas sobre o desempenho zootécnico na produção de frangos de corte, as alterações nas matérias-primas de ração e os avanços científicos em metodologias de detoxificação biológica e de boas práticas agrícolas. | Aflatoxicosis are mycotoxicosis caused by toxins produced by strains of fungi of the genus Aspergillus. They cause important losses to animal production, especially to those that use grains like base raw-material to prepare feeds, like poultry production. Currently, many techniques are being studied to prevent the deleterious effects caused by these substances to animal health, including the use of chemical substances, physical methods, strategies for harvest, storage and processing food. The objective of this review is to describe the main effects of aflatoxins on poultry performance, the alterations in raw-materials of feeds and scientific advances on methods for biological detoxification and agricultural good practices.
Afficher plus [+] Moins [-]Aflatoxicoses: prejuízos causados ao desempenho zootécnico de frangos de corte, boas práticas agrícolas e métodos biológicos de detoxificação Texte intégral
2014
Ágatha Cristina de Pinho Carão | Ricardo de Albuquerque | Carlos Augusto Fernandes de Oliveira | Pedro de Assunção Pimenta Ribeiro | Carlos Eduardo Bellinghausen Merseguel | Karen Andrade
As aflatoxicoses são micotoxicoses causadas por toxinas produzidas por estirpes de fungos do gênero Aspergillus. Causam prejuízos importantes à produção animal, em especial àquelas que têm nos grãos sua matéria-prima base para preparação de ração, como a avicultura de corte. Atualmente, diversas técnicas, tais como uso de substâncias químicas, métodos físicos, estratégias de colheita, armazenagem e processamento de alimentos, estão sendo estudadas para que se diminua e, se bem aplicadas, evite os efeitos deletérios causados por essas substâncias à saúde animal. O objetivo desta revisão é descrever os principais efeitos das aflatoxinas sobre o desempenho zootécnico na produção de frangos de corte, as alterações nas matérias-primas de ração e os avanços científicos em metodologias de detoxificação biológica e de boas práticas agrícolas.
Afficher plus [+] Moins [-]Viabilidade de sistemas de produção de ovinos a pasto utilizando indicadores econômicos de longo prazo e a metodologia do valor esperado da terra | Feasibility of grazing sheep production systems using long-term economic indicators and the methodology of the soil expectation value Texte intégral
2014
Stivari, Thayla Sara Soares | Chen, Rafael Felice Fan | Gameiro, Augusto Hauber | Monteiro, Alda Lúcia Gomes | Raineri, Camila | Silva, Juliana Batista Andrade
Viabilidade de sistemas de produção de ovinos a pasto utilizando indicadores econômicos de longo prazo e a metodologia do valor esperado da terra | Feasibility of grazing sheep production systems using long-term economic indicators and the methodology of the soil expectation value Texte intégral
2014
Stivari, Thayla Sara Soares | Chen, Rafael Felice Fan | Gameiro, Augusto Hauber | Monteiro, Alda Lúcia Gomes | Raineri, Camila | Silva, Juliana Batista Andrade
Devido ao valor elevado da terra no Brasil, é necessária a realização de estudos de viabilidade econômica durante a escolha da estratégia de produção. O valor esperado da terra determina o preço máximo de compra da terra nua, considerando o horizonte de tempo infinito. Portanto, essa metodologia foi utilizada para avaliar a viabilidade econômico-financeira de sistemas de produção de ovinos em pastagem com terminação em creep feeding ou creep grazing de cordeiros não desmamados. Seis cenários foram propostos para avaliar a viabilidade econômica de acordo com a estratégia de terminação, a oferta de matéria seca (MS) por kg de peso vivo (PV) por dia (12% ou 8%) e a área de pastagem suplementar correspondente de trevo branco (30% a 50% – em relação à área de pastagem principal). O valor esperado da terra foi positivo em todos os sistemas avaliados. O sistema com terminação em creep grazing com 8% de oferta de MS/PV e com redução da área suplementar para 30% apresentou o maior retorno financeiro (R$ 289.043,71) e a maior taxa interna de retorno (1,74%). No entanto, o cenário economicamente mais atraente foi o sistema de creep feeding com 8% de oferta de MS/PV, permitindo despesas de até R$ 22.950,68 por hectare. Ajustes na oferta da pastagem principal, que não comprometam o desempenho do animal, podem permitir melhores resultados econômicos de sistemas de produção de ovinos em pastagem. O valor esperado da terra pode ser usado como um indicador econômico na escolha da localização ou ampliação de sistemas de produção de ovinos em pastejo. | Due to the high value of land in Brazil, it is necessary to conduct studies about the economic feasibility of the choice of production strategy. The soil expectation value determines the maximum purchase price of the bare land, considering the horizon of infinite time. Therefore, this methodology was used to assess the financial-economic feasibility of sheep production systems in pasture with either creep feeding or creep grazing termination of unweaned lambs. Six scenarios were proposed to evaluate the economic feasibility, according to the finishing strategy, the dry matter (DM) offer per kg of body weight (BW) per day (12% or 8%) and the corresponding percentage of white clover supplementary pasture area (30% to 50% - relative to the main pasture area). The soil expectation value was positive in all of the evaluated systems Creep grazing finishing system with 8% DM offer per kg BW and with 30% of reduction on the white glover area resulted in the largest financial return (R$ 289,043.71) and the highest internal return rate (1.74%). The most economically attractive scenario, however, was the creep feeding finishing system with 8% DM offer per kg of BW, which allowed expenses with the land as high as R$ 22,950.68 per hectare. Adjustments in the main pasture offer, which do not compromise animal performance, can enable economic improvement on the feasibility of grazing sheep production systems. The soil expectation value can be used as an economic indicator in the choice of location or expansion of grazing sheep farms.
Afficher plus [+] Moins [-]Feasibility of grazing sheep production systems using long-term economic indicators and the methodology of the soil expectation value Texte intégral
2014
Thayla Sara Soares Stivari | Rafael Felice Fan Chen | Augusto Hauber Gameiro | Alda Lúcia Gomes Monteiro | Camila Raineri | Juliana Batista Andrade Silva
Due to the high value of land in Brazil, it is necessary to conduct studies about the economic feasibility of the choice of production strategy. The soil expectation value determines the maximum purchase price of the bare land, considering the horizon of infinite time. Therefore, this methodology was used to assess the financial-economic feasibility of sheep production systems in pasture with either creep feeding or creep grazing termination of unweaned lambs. Six scenarios were proposed to evaluate the economic feasibility, according to the finishing strategy, the dry matter (DM) offer per kg of body weight (BW) per day (12% or 8%) and the corresponding percentage of white clover supplementary pasture area (30% to 50% - relative to the main pasture area). The soil expectation value was positive in all of the evaluated systems Creep grazing finishing system with 8% DM offer per kg BW and with 30% of reduction on the white glover area resulted in the largest financial return (R$ 289,043.71) and the highest internal return rate (1.74%). The most economically attractive scenario, however, was the creep feeding finishing system with 8% DM offer per kg of BW, which allowed expenses with the land as high as R$ 22,950.68 per hectare. Adjustments in the main pasture offer, which do not compromise animal performance, can enable economic improvement on the feasibility of grazing sheep production systems. The soil expectation value can be used as an economic indicator in the choice of location or expansion of grazing sheep farms.
Afficher plus [+] Moins [-]Uso da PCR para detecção de bacilo da tuberculose bovina em leite de vacas positivas ao teste cutâneo | Use of PCR for detection of milk naturally infected with bacilli of bovine tuberculosis Texte intégral
2014
Carvalho, Ricardo César Tavares | Castro, Vinicius Silva | Fernandes, Dandara Virginia Guia Semedo | Moura, Greika | Soares, Elis Santos | Figueiredo, Eduardo Eustáquio de Souza | Paschoalin, Vânia Margaret Flosi
Uso da PCR para detecção de bacilo da tuberculose bovina em leite de vacas positivas ao teste cutâneo | Use of PCR for detection of milk naturally infected with bacilli of bovine tuberculosis Texte intégral
2014
Carvalho, Ricardo César Tavares | Castro, Vinicius Silva | Fernandes, Dandara Virginia Guia Semedo | Moura, Greika | Soares, Elis Santos | Figueiredo, Eduardo Eustáquio de Souza | Paschoalin, Vânia Margaret Flosi
O agente causador da tuberculose bovina (BTB) é o Mycobacterium bovis, uma bactéria pertencente ao complexo M. tuberculosis (CMT). O diagnóstico definitivo é realizado através do isolamento e identificação de M. bovis em amostras clínicas, utilizando uma combinação de cultura bacteriológica e métodos bioquímicos, que são considerados como "padrão de ouro". Entretanto esses procedimentos são trabalhosos e demorados. No seguinte estudo avaliamos um ensaio de PCR para a detecção direta de DNA de CMT em leite de vacas positivas ao teste cutâneo, utilizando primers previamente testados e comprovadamente confiáveis, para amplificação da região de interesse IS6110. Leite previamente contaminado com M. bovis foi utilizado como material de partida, para a padronização da técnica. O procedimento envolveu a extração do DNA por lise enzimática (proteinase K e lisozima), fenol, clorofórmio, álcool isoamílico, seguido de precipitação com etanol e PCR. O ensaio de PCR permitiu detectar BTB em leite artificialmente contaminado, com um limite de detecção de 100 UFC/mL, e também foi capaz de detectar o bacilo em 50% (75/150) de amostras de leite testadas. A técnica de PCR pode ser utilizada para auxiliar o diagnóstico in vivo da BTB, além de complementar os testes sorológicos ou microbiológicos, tornando-se uma alternativa para estudos epidemiológicos da transmissão de BTB, prevenindo que o leite contaminado entre na cadeia de alimentos. | The causative agent of bovine tuberculosis (BTB) is Mycobacterium bovis, a bacteria belonging to M. tuberculosis complex (MTC). The definitive diagnosis is realized by isolation and identification of the M. bovis from clinical samples, using a combination of traditional culture and biochemical methods, which is considered the “gold standard”. This procedure is cumbersome and time-consuming. We evaluated a PCR assay for the direct detection of MTC DNA in naturally contaminated milk, using primers that were previously tested and proven reliable to target the IS6110 element. Milk previously seeded with M. bovis was used as the starting material, for padronization of the technique. The procedure involved extracting the DNA by enzymatic lysis (proteinase K and lysozyme), phenol, chloroform, isoamyl alcohol, followed by ethanol precipitation and PCR. The PCR assay allowed us to detect BTB in artificially contaminated milk, with a detection limit of 100 CFU/mL, and was also able to detect the bacillus in 50% (75/150) of samples from naturally infected animals. This procedure could be used to assist the in vivo diagnosis for BTB, complementing the sorological or microbiological tests and becomes an alternative option for implementation in epidemiological studies of BTB transmission and to prevent contaminated milk from entering the food supply.
Afficher plus [+] Moins [-]Use of PCR for detection of milk naturally infected with bacilli of bovine tuberculosis Texte intégral
2014
Ricardo César Tavares Carvalho | Vinicius Silva Castro | Dandara Virginia Guia Semedo Fernandes | Greika Moura | Elis Santos Soares | Eduardo Eustáquio de Souza Figueiredo | Vânia Margaret Flosi Paschoalin
The causative agent of bovine tuberculosis (BTB) is Mycobacterium bovis, a bacteria belonging to M. tuberculosis complex (MTC). The definitive diagnosis is realized by isolation and identification of the M. bovis from clinical samples, using a combination of traditional culture and biochemical methods, which is considered the “gold standard”. This procedure is cumbersome and time-consuming. We evaluated a PCR assay for the direct detection of MTC DNA in naturally contaminated milk, using primers that were previously tested and proven reliable to target the IS6110 element. Milk previously seeded with M. bovis was used as the starting material, for padronization of the technique. The procedure involved extracting the DNA by enzymatic lysis (proteinase K and lysozyme), phenol, chloroform, isoamyl alcohol, followed by ethanol precipitation and PCR. The PCR assay allowed us to detect BTB in artificially contaminated milk, with a detection limit of 100 CFU/mL, and was also able to detect the bacillus in 50% (75/150) of samples from naturally infected animals. This procedure could be used to assist the in vivo diagnosis for BTB, complementing the sorological or microbiological tests and becomes an alternative option for implementation in epidemiological studies of BTB transmission and to prevent contaminated milk from entering the food supply.
Afficher plus [+] Moins [-]Sinais dermatológicos clássicos na medicina veterinária Texte intégral
2014
Larsson, Carlos Eduardo
Sinais dermatológicos clássicos na medicina veterinária Texte intégral
2014
Larsson, Carlos Eduardo
Arrolam-se os sinais dermatológicos evidenciados na rotina da clínica dermatológica, que permitem aventar um diagnóstico presuntivo ou até estabelecê-lo cabalmente. Os dezesseis sinais reunidos envolvem quadros dermatopáticos etiologicamente relacionados às enfermidades autoimunes, infecciosas, parasitárias, alérgicas, endócrinas, psicopáticas, disqueratinizantes, neoplásicas e genodermatósicas.
Afficher plus [+] Moins [-]Sinais dermatológicos clássicos na medicina veterinária Texte intégral
2014
Carlos Eduardo Larsson
Arrolam-se os sinais dermatológicos evidenciados na rotina da clínica dermatológica, que permitem aventar um diagnóstico presuntivo ou até estabelecê-lo cabalmente. Os dezesseis sinais reunidos envolvem quadros dermatopáticos etiologicamente relacionados às enfermidades autoimunes, infecciosas, parasitárias, alérgicas, endócrinas, psicopáticas, disqueratinizantes, neoplásicas e genodermatósicas.
Afficher plus [+] Moins [-]Editorial Texte intégral
2014
Vasconcellos, Silvio Arruda | Gennari, Solange Maria
Inquérito sorológico da infecção pelos vírus da encefalomielite equina no estado de Minas Gerais, Brasil | Serological survey of equine encephalomyelitis virus infection in the state of Minas Gerais, Brazil Texte intégral
2014
Lara, Maria do Carmo Custódio de Souza Hunold | Beghin, Glaucia | Cunha, Elenice Maria Sequetin | Villalobos, Eliana Monteforte Cassaro | Nassar, Alessandra Figueiredo De Castro | Bello, Ana Cristina Passos de Paiva | Cunha, Arildo Pinto | Reis, Jenner Karlisson Pimenta dos | Leite, Rômulo Cerqueira | Mori, Enio
Inquérito sorológico da infecção pelos vírus da encefalomielite equina no estado de Minas Gerais, Brasil | Serological survey of equine encephalomyelitis virus infection in the state of Minas Gerais, Brazil Texte intégral
2014
Lara, Maria do Carmo Custódio de Souza Hunold | Beghin, Glaucia | Cunha, Elenice Maria Sequetin | Villalobos, Eliana Monteforte Cassaro | Nassar, Alessandra Figueiredo De Castro | Bello, Ana Cristina Passos de Paiva | Cunha, Arildo Pinto | Reis, Jenner Karlisson Pimenta dos | Leite, Rômulo Cerqueira | Mori, Enio
Foi investigada a ocorrência da infecção pelos vírus da Encelafalomielite Equina do Leste (EEE), Encefalomielite Equina do Oeste (WEE) e Encefalomielite Equina Venezuelana (VEE) em equídeos não vacinados contra tais agentes, criadosem dez Delegacias Regionaisdo Estado de Minas Gerais (Almenara, Bambuí, Curvelo, Governador Valadares, Montes Claros, Oliveira, São Gonçalo do Sapucaí, Teófilo Otoni, Unaí e Viçosa) empregando-se a técnica de soroneutralização em microplacas Dos 826 animais examinados, 30,2% (250/826) foram soropositivos para o EEE e 1,9% (16/826) para o VEE. Não foram detectados animais sororeagentes para o WEE. Conclui-se que tanto o vírus tipo leste como o venezuelano da Encelafalomielite Equina circulam na população equina do Estado de Minas Gerais. | The occurrence of Equine Eastern Encephalomyelitis (EEE), Equine Western Encephalomyelitis (WEE) and Equine Venezuelan Encephalomyelitis (VEE) virus infection was investigated in equids not vaccinated against these viruses. The animals were distributed in ten regional districts of the state of Minas Gerais (Almenara, Bambuí, Curvelo, Governador Valadares, Montes Claros, Oliveira, São Gonçalo do Sapucaí, Teófilo Otoni, Unaí e Viçosa). Microplate serum neutralization test was used to detect antibodies against encephalitis virus. Two hundred and fifty animals (30.2%, 250/826) were EEE-seropositive, while 1.9% of them (16/826) were VEE-seropositive. No animals were found to be seropositive for WEE. In conclusion, either EEE or VEE viruses circulate in the equid population of the state of Minas Gerais.
Afficher plus [+] Moins [-]Inquérito sorológico da infecção pelos vírus da encefalomielite equina no estado de Minas Gerais, Brasil Texte intégral
2014
Maria do Carmo Custódio de Souza Hunold Lara | Glaucia Beghin | Elenice Maria Sequetin Cunha | Eliana Monteforte Cassaro Villalobos | Alessandra Figueiredo De Castro Nassar | Ana Cristina Passos de Paiva Bello | Arildo Pinto Cunha | Jenner Karlisson Pimenta dos Reis | Rômulo Cerqueira Leite | Enio Mori
Foi investigada a ocorrência da infecção pelos vírus da Encelafalomielite Equina do Leste (EEE), Encefalomielite Equina do Oeste (WEE) e Encefalomielite Equina Venezuelana (VEE) em equídeos não vacinados contra tais agentes, criadosem dez Delegacias Regionaisdo Estado de Minas Gerais (Almenara, Bambuí, Curvelo, Governador Valadares, Montes Claros, Oliveira, São Gonçalo do Sapucaí, Teófilo Otoni, Unaí e Viçosa) empregando-se a técnica de soroneutralização em microplacas Dos 826 animais examinados, 30,2% (250/826) foram soropositivos para o EEE e 1,9% (16/826) para o VEE. Não foram detectados animais sororeagentes para o WEE. Conclui-se que tanto o vírus tipo leste como o venezuelano da Encelafalomielite Equina circulam na população equina do Estado de Minas Gerais.
Afficher plus [+] Moins [-]Clostridium perfringens e a enterite necrótica em frangos: principais fatores de virulência, genéticos e moleculares | Clostridium perfringens and necrotic enteritis in poultry: virulence, genetic and molecular factors Texte intégral
2014
Albornoz, Luis Antonio Llanco | Nakano, Viviane | Avila-Campos, Mario Julio
Clostridium perfringens e a enterite necrótica em frangos: principais fatores de virulência, genéticos e moleculares | Clostridium perfringens and necrotic enteritis in poultry: virulence, genetic and molecular factors Texte intégral
2014
Albornoz, Luis Antonio Llanco | Nakano, Viviane | Avila-Campos, Mario Julio
Clostridium perfringens é o causador da enterite necrótica que afeta a produção de frangos de corte no mundo todo. Essa bactéria produz diversas toxinas e causa lesões no intestino tendo como consequências a elevada mortalidade e perdas econômicas devido à baixa produtividade. Nessa revisão são apresentados os principais fatores de virulência, a susceptibilidade aos antimicrobianos e a diversidade genética de C. perfringens isolados de frangos com enterite necrótica. | Clostridium perfringens cause necrotic enteritis affecting the poultry production worldwide. This bacterium produces various toxins and causes lesions in the intestine producing high mortality and economic loss due to the low productivity. In this review, the major virulence factors, antimicrobial susceptibility and genetic diversity of C. perfringens from chickens with necrotic enteritis are showed.
Afficher plus [+] Moins [-]Clostridium perfringens e a enterite necrótica em frangos: principais fatores de virulência, genéticos e moleculares Texte intégral
2014
Luis Antonio Llanco Albornoz | Viviane Nakano | Mario Julio Avila-Campos
Clostridium perfringens é o causador da enterite necrótica que afeta a produção de frangos de corte no mundo todo. Essa bactéria produz diversas toxinas e causa lesões no intestino tendo como consequências a elevada mortalidade e perdas econômicas devido à baixa produtividade. Nessa revisão são apresentados os principais fatores de virulência, a susceptibilidade aos antimicrobianos e a diversidade genética de C. perfringens isolados de frangos com enterite necrótica.
Afficher plus [+] Moins [-]Results of Bacterial Culture and Sensitivity Testing From Nasolacrimal Duct Flushes in One Hundred and Three Both Healthy and Clinically Ill Pet Rabbits (Oryctolagus Cuniculus) Texte intégral
2014
Quinton, Jean-François | Hogerwerf, Angela | Grammatico-Guillon, Leslie | Medaille, Christine | Agoulon, Albert | Rosenthal, Karen | Advetia Specialty Practice ; Partenaires INRAE | Avian & Exotic Animal Clinic ; Partenaires INRAE | Vebiotel - Laboratoire de Biologie Vétérinaire | Biologie, Epidémiologie et analyse de risque en Santé Animale (BIOEPAR) ; Institut National de la Recherche Agronomique (INRA)-École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS) | St. Matthew's University Grand Cayman ; Partenaires INRAE
International audience | This study attempts to describe the bacterial nature and sensitivities of aerobic cultures from nasolacrimal duct (NLD) flushes in both healthy and clinically ill rabbits presenting nasal and ocular discharge to help effective treatment. The records of 83 pet rabbits presenting clinical signs (Clinical Signs Group: CSG) and of 20 control pet rabbits with no clinical signs (NCSG : Non Clinical Signs Group) were evaluated. The percentage of culture yielding no bacteria in control healthy rabbits group (25.9% of records) and in the group of rabbits with clinical signs (30% of records) is higher than expected in that the NLD environment is not sterile. Numerous bacterial organisms were isolated (26). The CSG didn’t show any different bacteria than those found in the NCSG. Organisms were categorized as to potential pathogenicity, and typical site of isolation in four categories: Pasteurella species, common bacteria of the GI tract, bacteria usually present on skin and mucosa and ubiquitous bacterias from the environment. The commensal GI tract bacteria could have colonized the NLD or may have been collected, while the fluid was passing from the nares over the upper lips, since rabbits ingest their cecotrophs. Ubiquitous bacteria could have been present in the NLD, but could also probably be present on the skin or come from an external contamination during sampling. Among the CSG, Pasteurella multocida was the most commonly isolated microorganism (34.8% of the total number of bacterial isolates), with a significant difference in juvenile rabbits. There was no significant difference between the percentage of Pasteurella multocida cultured in the NCSG and in the CSG. Enterobacter cloacae (10.1%) and Pseudomonas aeruginosa (8.7%) were consistent findings that can behave as opportunistic pathogens of clinical relevance. There was no significant difference in percentage of the four different bacterial categories among the groups showing various clinical signs. The sensitivity tests were consistent with the typical sensitivities of the bacteria that were isolated. Based on the majority of organisms cultured in the present study and their sensitivity panels, empiric choices of antibiotics include sulfonamides or quinolones.
Afficher plus [+] Moins [-]Seroprevalence of Mycoplasma gallisepticum infection in backyard and commercial layer chickens in Bhola district, Bangladesh Texte intégral
2014
Islam, Mahfuzul | Hassan, Jayedul | Khan, Md Shahidur Rahman
Seroprevalence of Mycoplasma gallisepticum infection in backyard and commercial layer chickens in Bhola district, Bangladesh Texte intégral
2014
Islam, Mahfuzul | Hassan, Jayedul | Khan, Md Shahidur Rahman
This study aimed to determine the seroprevalence of Mycoplasma gallisepticum (MG) infection in the chicken population of Bhola district, Bangladesh, during the period from April 2011 to March 2012. A total of 480 blood samples from chickens were collected from different upazilas (sub-districts) of Bhola district. The sampling considered the types of chicken (backyard and commercial layer), age groups (pullet, adult and old) and seasons (summer and winter). On the basis of the serum plate agglutination test, 55.83% (n=268/480) chickens were found positive for MG. The MG infection was higher (62.5%) in backyard chickens as compared to those being reared in commercial farming systems (53.61%). With respect to age groups, the prevalence was highest in pullets (60.63%) followed by adults (55.63%) and old chickens (51.25%). Moreover, chickens reared in winter showed higher prevalence of MG (60.42%) as compared to those reared in summer (51.25%). In conclusion, MG infection is prevalent in the chicken population of Bhola district, Bangladesh. Appropriate strategies should be taken for successful prevention and control of this disease in Bangladesh.DOI: http://dx.doi.org/10.5455/javar.v1i1p11-15 J. Adv. Vet. Anim. Res., 1(1): 11-15, March 2014
Afficher plus [+] Moins [-]Seroprevalence of Mycoplasma gallisepticum infection in backyard and commercial layer chickens in Bhola district, Bangladesh Texte intégral
2014
Mahfuzul Islam | Jayedul Hassan | Md. Shahidur Rahman Khan
This study aimed to determine the seroprevalence of Mycoplasma gallisepticum (MG) infection in the chicken population of Bhola district, Bangladesh, during the period from April 2011 to March 2012. A total of 480 blood samples from chickens were collected from different upazilas (sub-districts) of Bhola district. The sampling considered the types of chicken (backyard and commercial layer), age groups (pullet, adult and old) and seasons (summer and winter). On the basis of the serum plate agglutination test, 55.83% (n=268/480) chickens were found positive for MG. The MG infection was higher (62.5%) in backyard chickens as compared to those being reared in commercial farming systems (53.61%). With respect to age groups, the prevalence was highest in pullets (60.63%) followed by adults (55.63%) and old chickens (51.25%). Moreover, chickens reared in winter showed higher prevalence of MG (60.42%) as compared to those reared in summer (51.25%). In conclusion, MG infection is prevalent in the chicken population of Bhola district, Bangladesh. Appropriate strategies should be taken for successful prevention and control of this disease in Bangladesh.
Afficher plus [+] Moins [-]Experimental fracture healing with external skeletal fixation in a pigeon ulna model Texte intégral
2014
Tunio, Ahmed | Jalila, Abu | Meng, Coh Yong | Shameha, Intan
This study was conducted to assess the healing of transverse ulna fracture when fixed with external skeletal fixation (ESF) in pigeon. Ulna fracture was created under Isoflurane anesthesia in pigeons. A total of 12 pigeons were used in this study, and they were divided into three equal groups: Group-1, Group-2 and Group-3. The birds of the three groups were sacrificed at 3, 6, and 12 weeks after successful fracture surgery. It was found that bone union occurred between three and six weeks in all groups. Bone alignment, and callus remodeling were evident at 12 weeks (p<0.05) post fracture fixation. There were no radiographic evidence of callus remodeling in any bird at 3 and 6 weeks post-surgery. The radiographic observations of fracture healing in this study have confirmed that ESF fixation is an effective method to stabilize ulna fracture in pigeons and results in faster fracture healing.DOI: http://dx.doi.org/10.5455/javar.2014.a14 J. Adv. Vet. Anim. Res., 1(2): 58-64, June 2014
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