Knowles DJR, Cheevers W McGuire T, Stem T, Gorham J: Severity of arthritis is predicted by antibody response to gp 135 in chronic infection with caprine arthritisencephalitis virus. Klevjer-Anderson P, Adams DS, Anderson LW, Banks KL, McGuire TC: A sequential study of virus expression in retrovirusinduced arthritis of goats. Johnson GC, Barbet AF, Klevjer-Anderson P, McGuire TC: Preferential immune response to virion surface glycoproteins by caprine arthritisencephalitis virusinfected goats. Halliwell REW, Gorman NT: Veterinary Clinical Immunology. Gogolewski RP, Adams DS, McGuire TC, Banks KL, Cheevers WP: Antigenic crossreactivity between caprine arthritisencephalitis, visna and progressive pneumonia viruses involves all virionassociated proteins and glycoproteins. 1990, 13, 127–136.įenner FJ, Gibbs EPJ, Murphy FA, Rott R, Studdert MJ, White DO: Veterinary Virology. 1993, 10, 251–262.Įvermann JF: Comparative features of retroviral infections of livestock. 1981, 39, 914–919.Įast NE, Rowe JD, Dahlberg JE, Theilen GH, Pedersen NC: Modes of transmission of caprine arthritisencephalitis virus infection. 1991, 7–8, 29.ĭahlberg JE, Gaskin JM, Perk K: Morphological and immunological comparison of caprine arthritisencephalitis and ovine progressive pneumonia viruses. Sveriges Slakteriförbund Svenska Djurhälso- vârden 1993.Ĭornell B: CAE hos get: Nu mäste ätgärder sättas in! (CAE-in the goat: It is time to act). (The Swedish Animal Health Service’s regulations of health control of maedivisna in sheep). 1983, 44, 1670–1675.Īnonymous: Svenska Djurhälsovärdens bestämmel- ser för hälsokontroll avseende maedivisna hos far. 1980, 28, 421–427.Īdams DS, Klevjer-Anderson P, Carlson JL, McGuire TC, Gorham JR: Transmission and control of caprine arthritisencephalitis virus. However their gamma globulin concentration was initially low.Īdams DS, Crawford TB, Banks KL, McGuire TC, Perryman LE: Immune responses of goats persistently infected with caprine arthritisencephalitis virus. Removing kids from their dams immediately after birth combined with segregation and artificial rearing protected them from CAEV infection. Frequent sampling is necessary to get reliable information about spreading of the CAEV in a naturally infected goat herd. The results show that a great variation of the antibody pattern in individual goats occur, and therefore the AGIDT is only reliable as a herd screening test. The gamma globulin concentration was significantly higher in the goat milk fed group until the kids had become more than 19 weeks old. During the first 27 weeks of age no kid in the milk replacement reared group (N=4) seroconverted, but 5 of the 7 kids fed goat milk occasionally showed a positive antibody reaction. However, no correlation between clinical signs and antibody expression pattern was seen. Four seropositive goats developed clinical symptoms with difficulties to move. The antibody expression pattern to the viral proteins gpl35 and p28 varied in the individual goat and intermittent negative reactions were seen in 19 adult animals followed for 30-91 weeks. The aims of this study were: 1) to study how antibody expression, measured by agar gel immunodiffusion test (AGIDT), varied over time in naturally infected, seropositive goats, 2) to observe clinical signs in seropositive adult goats and 3) to follow seroconversion and gamma globulin concentration in goat kids artificially reared on cow milk replacement product only, compared to kids reared on untreated goat milk. Little is known about its characteristics in naturally infected goat herds. The caprine arthritis-encephalitis virus (CAEV) is a big problem in dairy goat industry.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |