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| Paula,Marília Ribeiro De; Rocha,Nathália Brito; Miqueo,Evangelina; Silva,Fernanda Lavínia Moura; Coelho,Marina Gavanski; Bittar,Carla Maris Machado. |
| ABSTRACT The objective of this study was to evaluate passive immunity transfer, health, performance, and metabolism of Holstein calves fed colostrum supplement associated with medium-quality colostrum. After birth, calves were blocked according to birth weight and date and distributed into the following treatments: high-quality colostrum (> 50 mg of Ig/mL; n = 15; 150 g kg−1 BW; positive control group); medium-quality colostrum (30-40 mg of Ig/mL; n = 14; 150 g kg−1 BW), and medium-quality colostrum (30-40 mg of Ig/mL; n = 15; 150 g kg−1 BW) + colostrum supplement (15 mL) given with the colostrum. Colostrum was given within the first 12 h of life in two meals by nipple bottle, and colostrum replacer was administered by a blister syringe. Blood samples... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Blood parameters; Colostrum supply; Immunity; Immunoglobulin Y; Intake. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100717 |
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| Munhoz,Lívia Silveira; Vargas,Gilberto D'Ávila; Fischer,Geferson; Lima,Marcelo de; Esteves,Paulo Augusto; Hübner,Silvia de Oliveira. |
| Immunoglobulin Y (IgY) is the major antibody isotype in birds, reptiles, amphibia, and lungfish, playing a similar biological role as mammal IgG. Due to its phylogenetic distance, immune diversification and presence in the egg yolk, IgY provide a number of advantages in immunodiagnostic compared to IgG from mammals. Moreover, IgY production is in agreement with international efforts to reduce, refine and if possible, to replace animals in experimentation, contributing substantially in favor of animal welfare. This article presents an overview about structural and functional features, production and applications of IgY in immunodiagnostic, as well as the advantages of chicken antibodies use. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Egg yolk antibody; Immunodiagnostics; Immunoglobulin Y; Polyclonal antibodies. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000100025 |
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