SEROLOGICAL SCREENING FOR INFECTOUS CATTLE DISEASES: III. CHOICE OF SENTINEL ANIMALS
A herd of Cattle (Holstein-Zebu crosses) was screened bimonthly for two years by ELISA for IgG antibodies to infectious disease agents. The herd was composed of 3 age groups: Young animals ( < 4 months of age), developing animals (4-36 months of age) and producing animals ( > 36 months of age)...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Santa Maria
1993-08-01
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| Series: | Ciência Rural |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781993000200015&lng=en&tlng=en |
| _version_ | 1819268043220451328 |
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| author | José Alfonso Barajas- Rojas Hans Riemann Charles Franti |
| author_facet | José Alfonso Barajas- Rojas Hans Riemann Charles Franti |
| author_sort | José Alfonso Barajas- Rojas |
| collection | DOAJ |
| description | A herd of Cattle (Holstein-Zebu crosses) was screened bimonthly for two years by ELISA for IgG antibodies to infectious disease agents. The herd was composed of 3 age groups: Young animals ( < 4 months of age), developing animals (4-36 months of age) and producing animals ( > 36 months of age). Ali young animals received colostrum within two hours after birth. The overall consistency of ELISA results, i. e agreement between two consecutive tests was about the same for the three age groups and was lowest for infections of intermediate prevalence (40-50%). The interpretation of changes in seroprevalence is most straight forward for young animals. Young animals positive at their first test reflect the immune status of their mothers while young animals born seronegative but seroconverting reflect the incidence rate. It is concluded that young animals when tested repeatedly are the best sentinel animals. |
| first_indexed | 2024-12-23T21:26:47Z |
| format | Article |
| id | doaj.art-8d16656e4f89445bac3b3df594cc8257 |
| institution | Directory Open Access Journal |
| issn | 1678-4596 |
| language | English |
| last_indexed | 2024-12-23T21:26:47Z |
| publishDate | 1993-08-01 |
| publisher | Universidade Federal de Santa Maria |
| record_format | Article |
| series | Ciência Rural |
| spelling | doaj.art-8d16656e4f89445bac3b3df594cc82572022-12-21T17:30:35ZengUniversidade Federal de Santa MariaCiência Rural1678-45961993-08-0123219720110.1590/S0103-84781993000200015S0103-84781993000200015SEROLOGICAL SCREENING FOR INFECTOUS CATTLE DISEASES: III. CHOICE OF SENTINEL ANIMALSJosé Alfonso Barajas- Rojas0Hans Riemann1Charles Franti2University of MéxicoUniversity of CaliforniaUniversity of CaliforniaA herd of Cattle (Holstein-Zebu crosses) was screened bimonthly for two years by ELISA for IgG antibodies to infectious disease agents. The herd was composed of 3 age groups: Young animals ( < 4 months of age), developing animals (4-36 months of age) and producing animals ( > 36 months of age). Ali young animals received colostrum within two hours after birth. The overall consistency of ELISA results, i. e agreement between two consecutive tests was about the same for the three age groups and was lowest for infections of intermediate prevalence (40-50%). The interpretation of changes in seroprevalence is most straight forward for young animals. Young animals positive at their first test reflect the immune status of their mothers while young animals born seronegative but seroconverting reflect the incidence rate. It is concluded that young animals when tested repeatedly are the best sentinel animals.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781993000200015&lng=en&tlng=enELISAsoroconversãojovenssentinelasdoenças infecciosas |
| spellingShingle | José Alfonso Barajas- Rojas Hans Riemann Charles Franti SEROLOGICAL SCREENING FOR INFECTOUS CATTLE DISEASES: III. CHOICE OF SENTINEL ANIMALS Ciência Rural ELISA soroconversão jovens sentinelas doenças infecciosas |
| title | SEROLOGICAL SCREENING FOR INFECTOUS CATTLE DISEASES: III. CHOICE OF SENTINEL ANIMALS |
| title_full | SEROLOGICAL SCREENING FOR INFECTOUS CATTLE DISEASES: III. CHOICE OF SENTINEL ANIMALS |
| title_fullStr | SEROLOGICAL SCREENING FOR INFECTOUS CATTLE DISEASES: III. CHOICE OF SENTINEL ANIMALS |
| title_full_unstemmed | SEROLOGICAL SCREENING FOR INFECTOUS CATTLE DISEASES: III. CHOICE OF SENTINEL ANIMALS |
| title_short | SEROLOGICAL SCREENING FOR INFECTOUS CATTLE DISEASES: III. CHOICE OF SENTINEL ANIMALS |
| title_sort | serological screening for infectous cattle diseases iii choice of sentinel animals |
| topic | ELISA soroconversão jovens sentinelas doenças infecciosas |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781993000200015&lng=en&tlng=en |
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