A serological survey for infectious bursal disease virus antibodies in free-range village chickens in northern Tanzania

Swai, ES; Kessy, M. J.; Sanka, Paul; Mtui, P. F.

doi:10.4102/jsava.v82i1.30

Cited by 26 publications

(25 citation statements)

References 17 publications

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“…This practice may result in the interaction between sick birds and healthy birds, increasing the frequency of ND. According to Swai et al (2011) and Ogali et al (2018), mixing of chicken during transit and at point of sale in markets is a source of disease spread and outbreaks.…”

Section: Resultsmentioning

confidence: 99%

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The role of unregulated chicken marketing practices on the frequency of Newcastle disease outbreaks in Kenya

et al. 2019

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In developing countries, chicken trade is characterized by complex chains comprising of many actors with limited biosecurity. This increases the spread of chicken diseases like Newcastle disease (ND). In Kenya, there is lack of uniformity in practices used in live bird markets, leading to increased disease outbreaks. This study aimed at assessing the effects of the chicken marketing practices on the frequency of ND outbreaks. A Poisson regression (PRM) was used on data collected from 336 traders selected using multi-stage sampling in Kakamega, Machakos, and Nairobi. Results highlight the low access of trainings and credit by traders. From the PRM results, breed composition, market channel, transportation, origin of birds, mixing of birds, slaughter of birds, disposal of waste, and housing as well as trader attributes like ND awareness, licensing, gender, and age had significant effects on the frequency of ND outbreaks. The study recommends that County governments collaborate with development partners to develop innovative ways of disseminating information on ND. The County governments should invest in market infrastructure such as slaughter facilities, special shelters and waste disposal equipment. There is also need for enforcement of biosecurity and hygiene measures through regular market inspections.

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Section: Resultsmentioning

confidence: 99%

“…This results in the interaction between sick and healthy birds, increasing the frequency of ND. According to Swai et al (2011), mixing of chicken during transit and at point of sale in markets is a source of disease spread and outbreaks. This result is also consistent with those found by Munyua et al (2013) and Ogali et al (2018).…”

Section: Resultsmentioning

confidence: 99%

The role of unregulated chicken marketing practices on the frequency of Newcastle disease outbreaks in Kenya

et al. 2019

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“…An infection of IBD leads to lesions of the Fabricius bursa (a cloacal gland that plays a crucial role in the immune system of poultry, as does the spinal cord in humans) and intramuscular hemorrhages ( Van den Berg et al., 2000 ; Dey et al., 2019 ). Anus pecking, prostration, and watery droppings are observed in 3- to 6-wk-old chicks infected with IBD ( Swai et al., 2011 ).…”

Section: Disease-causing Pathogens and Parasitesmentioning

confidence: 99%

An overview of health challenges in alternative poultry production systems

et al. 2021

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Due to consumer demand and changing welfare standards on health, ecology, equity, and safety concepts, poultry production has changed markedly over the past 20 y. One of the greatest changes to poultry production standards is now offering poultry limited access to the outdoors in alternative and organic poultry production operations. Although operations allowing access to the outdoors are still only a small portion of commercial poultry production, it may impact the gastrointestinal ( GIT ) health of the bird in different ways than birds raised under conventional management systems. The present review describes current research results in alternative systems by identifying how different poultry production operations (diet, environmental disruptive factors, diseases) impact the ecology and health of the GIT. Various research efforts will be discussed that illustrate the nutritional value of free-range forages and how forages could be beneficial to animal health and production of both meat and eggs. The review also highlights the need for potential interventions to limit diseases without using antibiotics. These alternatives could enhance both economics and sustainability in organic and free-range poultry production.

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“…Una de las principales patologías que afecta mundialmente a las aves de corral es la enfermedad infecciosa bursal (EIB) 4 . El virus causante pertenece al género Avibirnavirus, familia Birnaviridae, el cual presenta una cápside icosaédrica de una sola capa con un diámetro entre 55 y 60 nm.…”

Section: Introductionunclassified

Evaluación de títulos de anticuerpos contra la enfermedad infecciosa bursal en gallinas de traspatio

Duarte¹,

Mendez²,

Gómez³

et al. 2019

Rev. vet.

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Resumen Duarte, A.; Méndez, G.; Gómez, H.; Alvarenga, D.; Castro, L.: Evaluación de títulos de anticuerpos contra la enfermedad infecciosa bursal en gallinas de traspatio. Rev. Vet. 30: 2, XX-XX, 2019. La enfermedad infecciosa bursal (EIB), representa una de las principales patologías que afecta a las poblaciones avícolas de traspatio. La infección es producida por un virus altamente contagioso que ocasiona importantes pérdidas económicas, principalmente asociada con inmunosupresión. El objetivo de este trabajo fue evaluar niveles de anticuerpos en gallinas de traspatio de la ciudad de Curuguaty, Paraguay. Se obtuvieron muestras de sangre de 16 aves aparentemente sanas, sin distinción de sexo ni edad, que no habían recibido vacunación. La técnica serológica utilizada fue ELISA de tipo indirecto. Del total de muestras analizadas un 37,5% presentó títulos de anticuerpos contra la EIB. Considerando el sexo, machos y hembras revelaron 100% y 16,3% de positividad, respectivamente. La mayor cantidad de casos se reportó en aves jóvenes de 3 a 6 meses de edad. Los resultados obtenidos demuestran la existencia de cepas circulantes del virus de la EIB a campo, por lo cual es necesaria la implementación de programas de control capaces de erradicar el agente causal. Palabras clave: gallina, enfermedad infecciosa bursal, anticuerpos, ELISA, traspatio, Paraguay. Recibido: setiembre 2018 / Aceptado: diciembre 2018 Duarte, A.; Méndez, G.; Gómez, H.; Alvarenga, D.; Castro, L.: Evaluation of antibody titers against infectious bursal disease in backyard chickens. Rev. Vet. 30: 2, XX-XX, 2019. Infectious bursal disease (IBD), represents one of the main pathologies that affects backyard poultry populations. Infection is produced by a highly contagious virus that causes significant economic losses, mainly associated with immuno-suppression. The objective of this work was to evaluate antibody levels in backyard hens of Curuguaty City, Paraguay. Blood samples were obtained from 16 healthy birds, without distinction of sex, age and that did not received vaccination. The serological technique was indirect ELISA. Of the total samples analyzed, 37.5% had antibody titers against IBD. Considering the sex, 100% and 16.3% were reported as positives in males and females, respectively. The largest number of cases was reported in young birds from 3 to 6 months of age. Results show that there are circulating strains of IBD virus in the field. The necessity of the implementation of adequate control programs in order to eradicate the causal agent, is emphasized.

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A serological survey for infectious bursal disease virus antibodies in free-range village chickens in northern Tanzania

Cited by 26 publications

References 17 publications

The role of unregulated chicken marketing practices on the frequency of Newcastle disease outbreaks in Kenya

The role of unregulated chicken marketing practices on the frequency of Newcastle disease outbreaks in Kenya

An overview of health challenges in alternative poultry production systems

Evaluación de títulos de anticuerpos contra la enfermedad infecciosa bursal en gallinas de traspatio

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