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Immunomodulatory effect on chitosan against Fowl typhoid infection
Cho, K.O.;Koh, H.B.(Chonnam National University, Gwangju, Republic of Korea) | Kim, G.Y.(Dongshin University, Naju, Republic of Korea)E-mail:kykim@dsu.ac.kr
Chitosan is similar in structure to cellulose and are the second most abundant polysaccharides in nature, comprising the horny substance in the exoskeletons of crabs, shrimp and insects as well as fungi. This study was conducted to access the effect of immunomodulation responses of chitosan(N-acetyl-β-Dglucosamine) chicken infected with in Fowl typhoid(Salmonella gallinarum). One-day-old broiler chicks were divided into eight groups: The 1st group was inoculated intra-peritoneally with chitosan and challenged intra-peritoneally with S. gallinarum. The 2nd group was inoculated intra-peritoneally with chitosan.
Mostrar más [+] Menos [-]Control of canine respiratory and diarrheal disease using egg yolk antibodies I. Induction of antibody in hens immunized with combined antigens of Bordetella bronchiseptica, parvovirus and canine distempervirus
Lee, H.S.;Kim, J.M.;Woo, S.R.;Jung, B.Y.;Cho, Y.S.;Tark, D.S.;Lim, S.K.(National Veterinary Research and Quarantine Service, Anyang, Republic of Korea)E-mail:leehsoo@nvrqs.go.kr | Yoo, H.S.(Seoul National University, Seoul, Republic of Korea) | Yoon, Y.D.;Oh, J.S.(Green Cross Veterinary Science Institute, Yongin, Republic of Korea) | Huh, W.;Mun, Y.S.(Dae Sung Microbiology Laboratory, Uiwang, Republic of Korea)
This study was carried out to produce IgY against B. bronchiseptica, parvovirus and distemper virus that are major pathogens in alimentary and/or respiratory diseases of dogs. In the comparison of adjuvants, ISA70 was the best in the rapid induction and maintence of antibody titers. Agglutination antibody titers against B. bronchiseptica were 1:1,280~1:10,240 in sera and 1:160~1:1,280 in egg yolk. Hemagglutination inhibition(HI) titers against parvovirus in sera and egg yolk were 1:80~1:320 and 1:64~1:256, respectively. Virus neutralization titers against canine distemper was 1:8~1:64 in sera and egg yolk.
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