| Full text | |
| Author(s): |
Alessandra Marnie Martins Gomes de Castro
[1]
;
Fernando Gomes de Castro Júnior
[2]
;
Cintia Kiomi Mori
[3]
;
Taís Fukuta da Cruz
[4]
;
Cintia Manzatto Baldin
[5]
;
Fábio Enrique Lemos Budiño
[6]
;
João Pessoa Araújo Júnior
[7]
;
Leonardo José Richtzenhain
[8]
Total Authors: 8
|
| Affiliation: | [1] Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia - Brasil
[2] Instituto de Zootecnia - Brasil
[3] Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia - Brasil
[4] Universidade Estadual Paulista Júlio de Mesquita Filho. Instituto de Biociências - Brasil
[5] Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia - Brasil
[6] Instituto de Zootecnia - Brasil
[7] Universidade Estadual Paulista Júlio de Mesquita Filho. Instituto de Biociências - Brasil
[8] Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia - Brasil
Total Affiliations: 8
|
| Document type: | Journal article |
| Source: | Arq. Inst. Biol.; v. 80, n. 4, p. 393-399, 2013-00-00. |
| Abstract | |
The present study describes a strategy to obtaining PCV2-negative animals from a PCV2-positive herd. Sixteen piglets were selected from females that had their IgG anti-PCV2 and viral circulation followed during pregnancy. These 7-days old piglets were transferred to the research unit. During the period from 7 to 49 days of age, serum, nasal and fecal swabs were collected every seven days. After this period, three animals remained in the research unit and were followed from 49 to 114 days of age, with samples taken each 28 days. No difference (p = 0.317) in viremia between gilts (n = 6) and sows (n = 10) were observed. Regarding the IgG levels, a significant difference (p = 0.0213) were found between gilts and sows. The piglets (n = 16), obtained from the two females, were transferred to the research unit. The animals between 7 and 10 and 49 and 52 days of age showed a decreased of the IgG title and absence of IgM; the serum and fecal and nasal swabs were negative for PCV2 DNA. After 49 days of age, the three remained animals negative for IgG, IgM and viral DNA for PCV2. In conclusion, the strategy of handling used herein allowed the obtention of PCV-2 negative pigs from PCV2-positive herds. (AU) | |