Data/hora: 18/06/2024 13:59:29

Biblioteca(s): 	Embrapa Suínos e Aves.	
Data corrente: 	22/11/2022	
Data da última atualização: 	01/12/2022	
Autoria: 	MACIAG, S. S.; VOLPATO, F.; BOMBASSARO, G. E.; FORNER, R. A. N.; OLIVEIRA, K. P. V.; BOVOLATO, A. L.; LOPES, L.; BASTOS, A. P. A.	
Afiliação: 	SHAIANA SALETE MACIAG, Universidade Estadual do Centro-Oeste do Paraná; FRANCIANA VOLPATO, Instituto Federal Catarinense/Campus Concórdia; GABRIELLY E. BOMBASSARO, Instituto Federal Catarinense/Campus Concórdia; RICARDO AUGUSTO NEVES FORNER, Universidade Federal do Rio Grande do Sul; KARLA P. V. OLIVEIRA; ANA LIVIA C. BOVOLATO; LETÍCIA LOPES; ANA PAULA ALMEIDA BASTOS, CNPSA.	
Título: 	Effects of freezing storage on the stability of maternal cellular and humoral immune components in porcine colostrum.	
Ano de publicação: 	2022	
Fonte/Imprenta: 	Veterinary Immunology and Immunopathology, v. 254, 110520, 2022.	
DOI: 	https://doi.org/10.1016/j.vetimm.2022.110520	
Idioma: 	Inglês	
Conteúdo: 	Abstract: The placental structure of sows is epitheliochorial and prevents maternal serum immunoglobulin transfer to the fetus; therefore, the piglet relies on the ingestion of colostrum to acquire passive immunity. Colostral antibody-mediated and cell-mediated immunity contribute to immunity in piglets. However, little is known about the effects of freezing at -20 °C on colostral immune components during short-term storage, whether this will somehow compromise the acquisition of passive immunity of newborn piglets fed with this colostrum and the humoral immunity in porcine colostrum, and to possible shifts in immunological levels in colostrum collections during the colostral period. Based on the average concentration of immunoglobulin, frozen and fresh colostrum did not differ significantly. Overall, there were no storage differences in total macrophages, granulocytes, and NK cells. However, the frozen colostrum presented T lymphocyte subsets and B lymphocytes significantly lower than the fresh colostrum (p &#8804; 0.05). Therefore, to sustain higher piglet survival rates, B cells may be a selective strategy to ensure immune defense to neonatal piglets. According to our findings, colostrum can be stored by freezing at -20 °C for up to 30 days and surplus porcine colostrum can be collected from the sow up to eight hours after the start of farrowing.	
Palavras-Chave: 	Cellular immunity; Colostrum quality; Failure in passive transfer; Imunidade celular; Qualidade do colostro.	
Thesagro: 	Período de Gestação; Porca.	
Thesaurus Nal: 	Sows.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Suínos e Aves (CNPSA)	
Exemplares: 	CNPSA - (22455-1) - UPC - AP - DD -  -  -  - DIS