Data/hora: 13/06/2024 05:50:13

Provedor de dados: | 2
País: | Brazil

Título:

Auto-lysed yeast and yeast extract effects on dry matter intake, blood cells counts, IgG titer and gene expression of IL-2 in lactating dairy cows under heat stress

Auto-lysed yeast and yeast extract effects on dry matter intake, blood cells counts, IgG titer and gene expression of IL-2 in lactating dairy cows under heat stress

Autores: | Adili, Sogol; Sadeghi, Ali Asghar; Chamani, Mohamad; Shawrang, Parvin; Forodi, Farhad.
Data: | 2020-04-01
Ano: | 2020
Palavras-chave: | Immunoglobulin G; Immune response; Interleukin-2; Lymphocyte; Neutrophil immunoglobulin G; Immune response; Interleukin-2; Lymphocyte; Neutrophil.
Resumo: | The objective of this study was to assess the effects of auto-lysed yeast and yeast extract on performance and immune responses of cows in hot climate in the early lactation period. Twenty five lactating dairy cows randomly assigned to 5 groups and 5 replicates. Cows received basal diet with or without auto-lysed yeast (20 or 40 g/d/head) or yeast extract (20 or 40 g/d/head) as on top-dressed. There were no differences for daily dry matter intake, milk production milk fat and the counts of red blood cells and white blood cells among treatments (p &amp;gt; 0.05). There were significant differences among treatments for immunoglobulin G (IgG) level, lymphocyte and neutrophil percentages. Yeast extract had no effect on IgG level, but auto-lysed yeast increased IgG level and neutrophil percentage and decreased lymphocyte percentage (p &amp;lt; 0.05). The highest relative interleukin-2 gene expression was for cows received auto-lysed yeast at the level of 40 g/d/head. Yeast extract had no significant effect on interleukin-2 gene expression as compared to the control group. It was concluded that auto-lysed yeast at the level of 40 g/d/head had no effect on performance, but it could positively influence on immune response of lactating dairy cows in hot climate during early period of lactation.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/48425

10.4025/actascianimsci.v42i1.48425

Editor: | Editora da Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/48425/751375149795
Formato: | application/pdf

Fonte:

Acta Scientiarum. Animal Sciences; Vol 42 (2020): Publicação contínua; e48425

Acta Scientiarum. Animal Sciences; v. 42 (2020): Publicação contínua; e48425

1807-8672

1806-2636

Fonte:

Copyright (c) 2020 Acta Scientiarum. Animal Sciences

https://creativecommons.org/licenses/by/4.0