Influência da inclusão do plasma sanguíneo na dieta de leitões desmamados sobre a carga viral de circovírus suíno tipo 2 (PCV2)

• Autor(a) principal: Monferdini, Renato Pacheco
• Data de Publicação: 2017
• Outros Autores: Castro, Alessandra Marnie Martins Gomes de, Gerber, Priscilla Freitas, Castro Junior, Fernando Gomes de, Lobato, Zélia Ines Portela, Baldiserra Junior, Flavio Aparecido, Heinemann, Marcos Bryan, Richtzenhain, Leonardo José, Budiño, Fábio Enrique Lemos
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Brazilian Journal of Veterinary Research and Animal Science
• Texto Completo: https://www.revistas.usp.br/bjvras/article/view/116672
• topic: Weaning pigs; Spray-dried animal plasma; Humoral immune response; Leitões desmamados; Plasma sanguíneo em pó; Resposta imune humoral

Spray-dried animal plasma (SDAP), a natural byproduct of the meatpacking industry, has been shown to have beneficial effects on growth and performance of weaned pigs. Porcine circovirus 2 (PCV2) is an important virus that is disseminated in the pork industry. Regardless of the studies evaluating the possible transmission of PCV2 through SDAP, there is no information about the effects of its inclusion in the PCV2 loads in natural infections. The present investigation evaluated the influence of dietary inclusion levels of SDAP in weanling pigs on PCV2 viremia and humoral immune response. Fifty-six weaned piglets were fed in a 2-period feeding program. Dietary treatments included 0%, 2%, 4% or 6% and 0%, 1%, 2% or 3% of SDAP during period 1 (14 to 28 days old) and 2 (29 to 42-days old), respectively. In period 3 (42 to 56 days old), all piglets received a SDAP-free diet. Serum samples were collected weekly and tested for PCV2 antibodies and DNA load. The results show that the concentration of 6% and 3% of SDAP on feed offered for pigs during period 1 and 2, respectively, may have decreased the PCV2 loads.