Evaluation of an oral newcastle disease vaccine in Thailand

Tantaswasdi, Urasri; Danvivatanaporn, Jintana; Siriwan, P.; Chaisngh, Arunee; Spradbrow, P. B.

doi:10.1016/0167-5877(92)90071-m

Cited by 9 publications

(2 citation statements)

References 7 publications

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“…Raw white rice has not been a good carrier for oral vaccination probably because of its antiviral activity (Tantaswasdi et al 1992;Spradbrow 1993/94). This is unfortunate because white rice is readily available in many developing countries.…”

Section: Introductionmentioning

confidence: 99%

Oral vaccination of chickens against Newcastle disease with I-2 vaccine coated on oiled rice

Wambura

2008

Trop Anim Health Prod

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Antibody response produced by Newcastle disease virus (NDV, strain I-2) when given orally through oiled rice to chickens was determined. Serum samples were collected before and at a weekly interval for 28 days after vaccination and tested for haemagglutination inhibition (HI) antibody to NDV. The results showed 7 days after vaccination HI antibody titre log(2) was 3.8. Moreover, 14 and 28 days after vaccination HI antibody titre log(2) reached 6.5 and 8.0, respectively. All unvaccinated chickens were negative to NDV antibody throughout the study. Significant finding from the present study is that 7 days after vaccination chickens had produced protective antibody against NDV; this is in contrast to previous studies. Therefore, I-2 vaccine coated on the oiled rice is efficacious as it protects chickens from challenge with NDV.

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Section: Introductionmentioning

confidence: 99%

Oral vaccination of chickens against Newcastle disease with I-2 vaccine coated on oiled rice

Wambura

2008

Trop Anim Health Prod

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“…Cooked white rice has been an effective carrier for V4 and I-2 ND vaccines, although it is subject to bacterial spoilage [ 3 , 6 , 10 , 15 ]. Raw white rice has not acted as a good carrier for oral vaccination with the V4 strain of NDV [ 12 , 14 ]. This is unfortunate because white rice is readily available in many developing countries.…”

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confidence: 99%

Survival of avirulent thermostable Newcastle disease virus (strain I-2) in raw, baked, oiled, and cooked white rice at ambient temperatures

2007

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Raw white rice has not been considered a good carrier for oral vaccination, probably because of its antiviral activity. Methods are required to overcome antiviral activity in raw white rice. This study was carried out to determine the effects of various treatments of raw white rice on the survival of strain I-2 of Newcastle disease virus. These included cooking and baking the rice or mixing the rice with vegetable oil prior to coating with vaccine virus. The vaccine-coated rice was then stored for 30 min and 24 h, followed by quantitative recovery of the virus. Thirty min after mixing, uncooked, cooked, and baked rice, and rice mixed with vegetable oil showed titers of 106.2, 107.2, 106.6, and 107.0 EID50/0.1 ml, respectively. After storage for 24 h at 22-25℃, the titers dropped to 105.0, 106.5, 105.0, and 106.0 EID50/0.1 ml for uncooked, cooked, baked, and oiled rice, respectively.

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Oral vaccination of chickens with the V4 strain of Newcastle disease virus. Cooked and raw white rice as a vehicle

Samuel

Bensink

Spradbrow

1993

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Uncooked white rice and cooked white rice were tested as vehicles for the V4 strain of oral Newcastle disease vaccine. The results of feeding experiments were evaluated by the measurement of haemagglutination inhibition antibodies against Newcastle disease virus. Little of the virus applied to uncooked white rice could be recovered, even immediately after mixing, whereas when the virus was applied to cooked white rice most of it could be recovered. In 4 separate experiments, chickens failed to respond serologically to vaccine supplied on uncooked white rice. In all of 4 experiments with cooked white rice, there were serological responses in vaccinated chickens, from 45% to 100% of the chickens developing titres sufficiently high to indicate protection against challenge with virulent virus. Development of haemagglutination inhibition antibodies in some control chickens indicated the ability of the vaccine virus for lateral spread or persistence in the environment.

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Evaluation of an oral newcastle disease vaccine in Thailand

Cited by 9 publications

References 7 publications

Oral vaccination of chickens against Newcastle disease with I-2 vaccine coated on oiled rice

Oral vaccination of chickens against Newcastle disease with I-2 vaccine coated on oiled rice

Survival of avirulent thermostable Newcastle disease virus (strain I-2) in raw, baked, oiled, and cooked white rice at ambient temperatures

Oral vaccination of chickens with the V4 strain of Newcastle disease virus. Cooked and raw white rice as a vehicle

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